ns-3 RELEASE NOTES

This file contains ns-3 release notes (most recent releases first).

ns-3 documentation is accessible from the ns-3 website.

Consult the file CHANGES.md for more detailed information about changed API and behavior across ns-3 releases.

In the following, numeric references prefixed by '#' refer to a GitLab.com issue tracker number, and references prefixed by '!' refer to a GitLab.com merge request number.

Release 3-dev

In this release, we have introduced pedantic warnings to enhance C++ standard conformance and improve portability.

Supported platforms

Python API requires Cppyy and has only been tested on Linux. The latest known version to work with ns-3 is cppyy==3.1.2.

New user-visible features

(network) !1828 - Added a common helper to create and install applications
(lr-wpan) !1915 - Use MAC and PHY standard attribute ids
(lr-wpan) !1924 - Adds MAC attribute identifiers
(lr-wpan) !1927 - Adds standard version comments to MLME-GET.request function
(lr-wpan) !1926 - Adds namespace lrwpan and prefix shortening

Bugs fixed

(build) #1048 - Resolved an issue with static and monolithic builds incorrectly linking to non-ns-3 libraries.
(build) #1058 - Corrected the behavior of the ./ns3 clean command in symlinked directories.
(build) #1065 - Rolled back the -Os optimization setting as the default on MacOS to address lld compatibility issues.
(bindings) - Preventing module namespace collision by checking if namespace exists before injecting it.
(core) #1060 - Addressed a stack overflow problem in MakeEvent.
(bindings, core) #1059 - Resolved potential initialization issues in TimerImpl and ensured compatibility with Cppyy3.
(bindings, core) - Introduced a helper class to manage static initialization of Time as a workaround for Cppyy3 static initialization problems.
(bindings, lte, wifi) - Relocated statically initialized variables from header files to source files for Cppyy3 compatibility.
(tests) - Enhanced error handling in test.py to avoid attempts to open non-existent XML files following early test termination by sanitizers.

Release 3.41

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.41.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-9 or later, or LLVM/clang++-10 or later
Python 3.6 or later
CMake 3.13 or later
(macOS only) Xcode 11 or later
(Windows only) Msys2/MinGW64 toolchain or WSL2

Python API requires Cppyy and works for Linux only. Specifically, avoid Cppyy version 3; stay with version 2.4.2 for this release.

New user-visible features

(antenna) !1337 - UniformPlanarArray is extended to support multiple horizontal and vertical antenna ports, and dual-polarized antennas.
(core) !1364 - The MakeEnumAccessor was changed to support enum class types
(core) !1802 - Added support for Bernoulli and Binomial random variables (BernoulliRandomVariable, BinomialRandomVariable)
(internet) #1001 - TCP Cubic now supports Reno-friendly operation by default.
(internet) !1817 - Resolved inconsistency in behavior regarding the Strong End System Model between IPv4 and IPv6. Attributes Ipv6L3Protocol::StrongEndSystemModel and Ipv4::WeakEsModel have been aligned to provide a consistent user experience and avoid confusion
(lr-wpan) !1686 - Change CapabilityField to standard bitmap
(lr-wpan) !1698 - Change SuperframeField to standard bitmap
(lr-wpan) !1711 - Add pCurrentPage and pCurrentChannel attributes to MLME-GET.request primitive
(lr-wpan) !1706 - Create MAC layer abstraction (decoupling, alternative MACs) via a new LrWpanBase class
(lr-wpan) !1794 - Group MAC primitives status enumerations into a single enumeration
(spectrum)!1337 - ThreeGppSpectrumPropagationLossModel and ThreeGppChannelModel are extended to support multi-port and dual-polarized antenna arrays which is a basis for enabling 3GPP MIMO simulations in ns-3.
(wifi) - Added support for BlockAck buffer size of up to 1024 MPDUs (EHT STAs only)
(wifi) - Aligned default RTS threshold to 802.11-2020
(wifi) - Added EHT support for Ideal rate manager

Bugs fixed

(lr-wpan) !1673 - Fixes PHY BUSY_RX -> RX_ON operation
(lr-wpan) !1769 - DoDispose SIGSEGV and beacon fixes
(network) !1746 - PacketSocketClient not scheduling Send() for packet bursts
(network) !1793 - Fix string to MAC address parsing logic
(tap-bridge) !1540 - Update examples to support modern Wi-Fi standards
(tcp) !1788, !1825 - Fix several small issues with examples/tcp/tcp-bbr-example.cc and examples/tcp/tcp-linux-reno.cc
(tcp) !1812 - Several small fixes to TCP retransmission logic were added, based on trace comparison with OMNeT++
(tcp) #1026 - TcpRateLinux (delivery rate estimation) had an incorrect update to the rate sample
(visualizer) !1730 - Fix label positioning in PyViz
(wifi) - Fix agreement not always properly torn down when Block Ack inactivity timeout is elapsed
(wifi) - Stop A-MSDU aggregation when an A-MSDU is found in the queue
(wifi) - ReportAmpduTxStatus called twice when sending explicit BAR upon missed BlockAck
(wifi) - Fix regression causing BlockAckReq frames to be sent with data rates instead of control rates

Release 3.40

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.40.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-9 or later, or LLVM/clang++-10 or later
Python 3.6 or later
CMake 3.10 or later
(macOS only) Xcode 11 or later
(Windows only) Msys2/MinGW64 toolchain or WSL2

Python API requires Cppyy and works for Linux only. Specifically, avoid Cppyy version 3; stay with version 2.4.2 for this release.

New user-visible features

(core) !1586 - EmpiricalRandomVariable CDF pairs can now be added in any order.
(energy) !1329 - Extensions to battery discharge module
(lr-wpan) !1604 - Add CapabilityField bitmap functions
(lr-wpan) !1645 - Add LQI to MlmeAssociateIndicationParams
(wifi) Added support for 802.11be TID-to-Link Mapping
(wifi) Added a new trace source to WifiPhy to indicate operating channel change
(wifi) Improved support for multiple spectrum PHY interfaces
(wifi) Added initial support for MU-MIMO (ideal PHY layer only)

Bugs fixed

(antenna) #889 - Improve WrapTo* functions
(core) #922 - EmpiricalRandomVariable no longer requires that a CDF pair with a range value exactly equal to 1.0 be added.
(core) #949 - Fix bound callbacks arguments type detection
(internet) #956 - Avoid sending RS when link goes down
(lr-wpan) !1591 - Removed unnecessary Bcst filter from MAC
(lr-wpan) #944 - Fix for-loop in PrintTxQueue(s) functions
(lr-wpan) - Fix incorrect return parameter in the MAC MlmeAssociateConfirm
(mobility) #943 - Fix node direction change when node is in a corner
(wifi) - Reset MU PPDU UID to prevent STA from receiving the TB PPDU sent by another STA
(wifi) - Fix max value for UL MCS field of User Info fields (depends on TF variant)
(wifi) - Update TXOP bandwidth upon every transmission
(wifi) - Fix flush operation on WifiMacQueues
(wifi) #942 - Trace expired MPDUs before removing them from the queue to avoid blocking the recipient buffer
(wifi) - Fix wrong condition preventing PHY from aborting RX when starting TX

Release 3.39

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.39.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-9 or later, or LLVM/clang++-6 or later
Python 3.6 or later
CMake 3.10 or later
(macOS only) Xcode 11 or later
(Windows only) Msys2/MinGW64 toolchain or WSL2

Python API requires Cppyy. Specifically, avoid Cppyy version 3; stay with version 2.4.2 for this release.

New user-visible features

(applications) !1412 - Add Tx and TxWithAddresses trace sources in UdpClient
(bindings) - Package ns-3 as a pip wheel
(doc) #876 - Improve dark-mode heading, navigation, and search bars
(flowmonitor) #901 - Allow to reset the stats
(lr-wpan) !1399 - Add orphan scan support.
(lr-wpan) !1402 - Add attributes to MLME-SET and MLME-GET
(lr-wpan) !1410 - Add Mac16 and Mac64 functions
(network) !1405 - Add ConvertToInt to Mac64Address

Note: This release has removed the "wave" module from the codebase due to lack of maintenance and due to lack of relevance to modern vehicular networks which appear to be moving to cellular V2X solutions. Future users who may wish to use this code should obtain it from an earlier ns-3 release but should also be aware of a number of issues that arose and can be found in the ns-3 Issue tracker; in particular, #249, #879, #872, and #637.

Bugs fixed

(build) #881 - Fix scratch targets for file names containing dots
(core) #902 - Fix vector inversion in the function AttributeContainerTestSuite::ReverseList()
(energy) !1422 - Fix null harvester issue in EnergySource
(internet) #910 - Release memory when sockets are closed
(lr-wpan) !1406 - Fixes issues during MAC scan
(lr-wpan) !1481 - Small fixes in MAC orphan scan
(lte) #906 - Don't use invalid cell ID
(propagation) - fix height assignment in 3gpp propagation loss model
(wifi) #880 - Post-install change in WifiPhy::ChannelSettings does not completely reconfigure Wi-Fi
(wifi) #862 - sta-wifi-mac.cc cond="!link.bssid.has_value()", High occurrence at higher numbers of STAs per AP in indoor deployment.
(wifi) - Fix the equality operator of WifiInformationElement
(wifi) - Make the implementation of the Multi-Link Element compliant with the 11be specs by adding support of inheritance
(wifi) - Reset intra-BSS NAV when CF-End is an intra-BSS PPDU
(wifi) - UL MU CS shall be evaluated a SIFS after end of MU-RTS
(wifi) - Fix crash when changing operating channel after configuration but before initialization
(wifi) - Fix assert when non-HE STAs receive CTS frames sent using non-HT duplicate following a MU-RTS frame
(wifi) - Fix OBSS-PD support for 802.11be
(wifi) #917 - Add missing STA-ID in GetMode() call from YansErrorRateModel
(wifi) - Fix wifi-rate-adaptation-distance.cc example issues with CCA threshold

Release 3.38

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.38.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-9 or later, or LLVM/clang++-6 or later
Python 3.6 or later
CMake 3.10 or later
(macOS only) Xcode 11 or later
(Windows only) Msys2/MinGW64 toolchain

Python API requires Cppyy.

This release has discontinued support for g++-8 compilers.

New user-visible features

(core) !1236 - Added some macros to silence compiler warnings. The new macros are in warnings.h, and their use is not suggested unless for very specific cases.
(core) !1269 - Added new template classes ValArray and MatrixArray for efficient storage and operations on 1D, 2D, and 3D arrays.
(documentation) - Added an Installation Guide to replace the ns-3 wiki's installation page
(internet) !1229 - Ping now supports broadcast addresses.
(internet) !1186 - TcpWestwood model has been removed, and the class has been renamed TcpWestwoodPlus.
(internet-apps) - A new Ping model that works for both IPv4 and IPv6 has been added, to replace the address family specific v4Ping and Ping6.
(lr-wpan) !1006 - Added RX sensitivity configuration support.
(lr-wpan) !1268 - Added beacon payload via MLME-SET.request primitive.
(netanim) Added helper function to update the size of a node
(network) !938 - Added class TimestampTag for associating a timestamp with a packet.
(network) !1163 - Initializing an Ipv[4,6]Address from an invalid string do not raise an exception anymore. Instead the address is marked as not initialized.
(spectrum) !1046 - Added the TwoRaySpectrumPropagationLossModel fast-fading class, as the outcome of the related GSoC 2022 project titled "A simplified channel and beamforming model for ns-3"
(spectrum) !1119 - Added a capability to filter signals (with a new SpectrumTransmitFilter) sent on the SpectrumChannel before they are forwarded to receivers on the channel. This is motivated by scalability (reducing inconsequential simulation events). the TwoRaySpectrumPropagationLossModel fast-fading class, as the outcome of the related GSoC 2022 project titled "A simplified channel and beamforming model for ns-3"
(wifi) Added support for 802.11be Multi-Link Operations (MLO), STR mode only
(wifi) Added more fields to the EHT Capabilities information element
(wifi) Added an initial 802.11be-based example program
(wifi) Added 802.11ax dual NAV (basic NAV and intra-BSS NAV)
(wifi) Added 802.11ax Uplink Multi-User Carrier Sense (UL MU CS) mechanism and have it used by non-AP STAs when determining if they can reply to a received Trigger Frame
(wifi) Added support for 802.11ax MU-RTS/CTS protection
(wifi) !1119 - Added, by default, a WifiBandwidthFilter to spectrum channels created by the SpectrumWifiHelper, so as to filter out-of-band signals from the receiver.
(internet) InternetStackHelper can be now used on nodes with an InternetStack already installed (it will not install IPv[4,6] twice).
(wifi) Added support to attach multiple spectrum channels to a same PHY and the possibility to track signals from multiple RF interfaces

Bugs fixed

(core) !1236 - Deprecation warnings are silenced while calling NS_OBJECT_ENSURE_REGISTERED
(build) #808 - Handle profile setting changes in the first ns3 run
(build) #815 - Configure find_program to search for programs in PATH first, then AppBundles in MacOS
(lr-wpan) #636 - Ext address, short address and manual assoc adjustments
(internet) !1229 - Fixed a bug in Icmpv4Header::HandleEcho when replying to broadcast-type Echo requests, and two bugs in Ipv4RawSocketImpl::SendTo in handling sockets bound to a specific address and directed to a broadcast-type address.
(internet) - NeighborCacheHelper::PopulateNeighborCache is now robust against missing IPv4 or IPv6 stack in nodes.
(network) !1229 - Fixed a bug in Ipv4Address::IsSubnetDirectedBroadcast
(wifi) Fixed multiple issues about setting the TXOP holder
(wifi) #861 - Bianchi validation program was not compatible with 11ax
(wifi) Fixed 10 MHz offset in center frequencies for 6 GHz channels
(wifi) Fixed setting of Duration/ID field of a Multi-STA Block Ack
(wifi) Fixed handling of the HE TB TXVECTOR and TRIGVECTOR parameters
(wifi) Prevent extraction of in-flight MPDUs due to lifetime expired
(wifi) Fixed getting the primary 80 MHz channel number in the 6 GHz band

Release 3.37

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.37.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-8 or later, or LLVM/clang++-6 or later
Python 3.6 or later
CMake 3.10 or later
(macOS only) Xcode 11 or later
(Windows only) Msys2/MinGW64 toolchain

Python API requires Cppyy.

New user-visible features

(internet) !996 - IPv6 Router Solicitations (RS) are now retransmitted up to 4 times, following RFC 5779.
(internet) Add auto-generate ARP/NDISC cache, as the outcome of GSoC 2022 project.
(lte) LTE handover failure is now handled for joining and leaving timeouts, RACH failure, and preamble allocation failure.
(lr-wpan) !991 - Adds MAC ED scan support
(lr-wpan) !959 - Add PHY channel page support
(lr-wpan) !997 - Adds MAC ACTIVE and PASSIVE scan support
(lr-wpan) !1072 - Adds support for association (network bootstrap)
(lr-wpan) !1131 - Add support for configurable tx queue and ind tx queue limits.
(lr-wpan) !1133 - Add a post-rx error model.
(lr-wpan) Adds support for PAN Id compression (IEEE 802.15.4-2006 (7.5.6.1))
(lr-wpan) Adds PAN descriptor, CommandPayload Header and Capability Field
(utils) utils/bench-simulator has been moved to utils/bench-scheduler to better reflect what it actually tests
(utils) utils/bench-scheduler has been enhanced to test multiple schedulers.
(wifi) !984 - MultiUserScheduler can request channel access periodically
(wifi) CCA has been reworked to report the channel type in the CCA-BUSY indication and the per-20 MHz CCA bitmap for 802.11ax.
(wifi) PPDUs are transmitted on the largest primary channel that is found to be idle (according to the CCA-BUSY indication provided by the PHY) when gaining a TXOP.
(wifi) Add support for fragmentation of Information Elements.
(wifi) Implement 802.11be Multi-link discovery and setup

Bugs fixed

(build) #676 Fix missing version defines
(build) #684 Fix prevents hidden source files from being processed as scratches
(build) #687 Display how to forward arguments to programs with the ns3 script
(build) #694 Fix .ns3rc search scope
(build) #699 Fix the ns3 script behavior for -h
(build) #700 Suppress build chatter for ./ns3 show version
(build) #712 Fix build version parsing
(build) #713 Fix build version requirements checking to allow for custom embedded version
(build) #732 Fix WSLv1 check that failed in systems that included a ; in their /proc/version output
(build) #733 Fix installation to optionally include python bindings and uninstallation to remove pkg-config files
(build) #734 Fix installation to include tap-creator and raw-sock-creator
(build) Widen the search scope of headers and libraries to better support Bake
(core) #756 - Fix CsvReader::GetValueAs() functions for char arguments
(core) Fix int64x64-cairo.h bool operator
(general) #758 - Fix warnings about for loops with variables that are "too small" to fully represent the data being looped
(lr-wpan) #536 - Fixes PHY not going to TRX_OFF after CSMA-CA failure (RxOnWhenIdle(false))
(lr-wpan) #692 - Replace raw pointers for smart pointers in Tx queue and Ind Tx queue.
(wifi) #521 - UL OFDMA support
(wifi) #696 - 802.11ax assert failed. cond="seqNumber < SEQNO_SPACE_SIZE && startingSeqNumber < SEQNO_SPACE_SIZE"
(wifi) #709 Adjust WifiPhy::RxSensitivity with channel width for YansWifiChannel
(wifi) Fix setting of stations' maximum supported channel width
(wifi) Fix setting TX power for HE TB PPDUs in case AP requested using the max TX power
(wifi) Only include QoS Null frames for TIDs for which a BA agreement exists in responses to BSRP TFs
(wifi) Notify RX end only for the last received HE TB PPDU
(wifi) Correctly compute the time to RX end to be passed to WifiPhyStateHelper::SwitchToRx()
(wifi) Align default TXOP limit for VI and VO to 802.11-2020
(wifi) Fix acknowledgment in SU format for DL MU PPDUs including PSDUs of different TIDs
(wifi) Fix the TID of QoS Null frames in response to BSRP TF

Release 3.36.1

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.36.1.tar.bz2

Supported platforms

The supported platforms are the same as for the ns-3.36 release. Linux systems based on musl libc may also work with this release, although this has not been completely tested.

New user-visible features

(core) Remove PTHREAD-dependent classes (ns-3::SystemMutex, ns-3::CriticalSection, ns-3::SystemThread and ns-3::SystemCondition) and replace them with C++ STL libraries, respectively std::mutex, std::thread and std::condition_variable.

Bugs fixed

Various small changes were made to suppress new g++-12 compiler warnings
(build) - Fixed issue in which localized changes to modules or scratch directory were causing a global reconfiguration and rebuild
(build) - The optimization and debug compiler flags for the 'debug' build profile were reverted to the Waf settings, to improve the debugging experience
(build) - .ns3rc file parsing was fixed to support multiline lists and to skip comments
(build) - Allow module examples in subdirectories other than 'examples'
(build) - Report more supported features in the configuration message
(build) - Fix and improve generated pkgconfig files
(build) - Let ns3 change the configured build profile and C++ standard
(energy) #658 - Update energy source after updating the current drain
(openflow) - Update documentation and add compilation flag required by Clang
(sixlowpan) #659 - Fix UDP_NHC port decompression
(stats) - Fix missing macro definition (STATS_HAS_SQLITE3) for sqlite3 support
(wifi) - Check that PHY band is allowed before setting channel
(wifi) - Fix computation of maximum allowed channel width
(wifi) - Fix VHT Operation Channel Width encoding
(wifi) - Always add PPDU received with unsupported modulation as interference
(wifi) #639 - Remove FCS before deserializing Wi-Fi frames
(wifi) - Do not change protection when aggregating MSDU to DL MU PPDU
(wifi) - IdealWifiManager was not using the appropriate default mode

Release 3.36

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.36.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-8 or later, or LLVM/clang++-6 or later
Python 3.6 or later
(macOS only) Xcode 11 or later

Python API scanning only works for Python versions 3.6 through 3.8, due to an upstream toolchain limitation.

This release has discontinued support for g++-7 compilers.

New user-visible features

(build system) The ns-3 build system has been changed to CMake from Waf. A wrapper script called ns3 provides a Waf-like command-line API.
(build system) The default build profile has been changed from 'debug' to a new 'default'. Two key differences are that the new default has optimizations enabled (-O2 vs. previous -O0), and the -Werror flag is disabled. Select the 'debug' profile to disable optimizations and enable warnings as errors.
(core) An attribute value type for a std::tuple has been added
(core) Simulation events can be created from lambda expressions
(core) TypeId constructors now accept std::string
(fd-net-device) Support for PlanetLab helper was removed.
(lte) Handover now works with carrier aggregation configurations.
(mesh) The mesh model now includes a randomized per-hop forwarding delay.
(spectrum) ThreeGppSpectrumPropagationLossModel and ThreeGppChannelModel now support multiple PhasedArrayModel instances per device. This feature can be used to implement MIMO.
(spectrum) A new phased array spectrum propagation loss model, called PhasedArraySpectrumPropagationLossModel, has been added to better support different 4G/5G MIMO models that can exploit the multiple subarray concept.
(spectrum) ThreeGppSpectrumPropagationLossModel and ThreeGppChannelModel now support multiple PhasedArrayModel instances per device.
(spectrum) SpectrumPhy now also supports the new antenna arrays in addition to the previous antenna types.
(tcp) Support for Network Simulation Cradle was removed.
(traffic-control) Flow control features can be disabled from device helpers.
(wifi) The default Wi-Fi standard has been upgraded from 802.11a to 802.11ax.
(wifi) The default Wi-Fi rate control has been changed from ArfWifiManager to IdealWifiManager.
(wifi) The framework for consistently configuring operating channel, standard, band, channel width, and primary channel was changed.

Bugs fixed

(build): #461 - Avoid period character in executable names
(core) #141 - Print parent attributes from CommandLine --PrintAttributes
(core) #487 - Refactor double to int64x64 conversion test for platforms with less than 64 bit mantissa
(internet) #431 - ICMPv6 error messages carry packet metadata
(internet) - Fix RIPng address selection for intermediate nodes
(internet) - Fix source address selection for localhost
(internet) - Read correct bits when deserializing IPv6 flow label
(internet) - Fix errors in IPv6 Path MTU discovery.
(internet-apps) #576 - Fix V4TraceRoute crash at application stop
(lte) #592 - Update lte-rrc-protocol-ideal.cc to solve SIB2 repeatedly reception issue
(mesh) #472 - mesh.cc example distance too large for preamble detect
(mesh) #478 - Persistent collisions of forwarded broadcast frames
(mpi) #607 - Call CommandLine correctly to generate docs
(nix-vector) - Remove unused BuildNixVectorLocal () function.
(nix-vector) #466 - Handle loopback IPv4/IPv6 addresses
(nix-vector) #567 - Rebuild NixVector if topology changes
(spectrum) Fix condition for channel matrix update in ThreeGppChannelModel (left and right operand were pointing to the same object)
(spectrum) Assign stream to random variable for Doppler term in ThreeGppChannelModel (moved from ThreeGppSpectrumPropagationLossModel)
(tcp) #531 - TcpWestwood divide-by-zero and floating point issues
(traffic-control) !844 - Fix value of MaxBurstAllowance in PIE
(wifi) - Mark MPDU as acknowledged before removing from the in-flight queue
(wifi) - Fix issue with setting of QosSupported attributes
(wifi) - Fix issue with installing QosTxop objects
(wifi) - Initialize WifiUlMuMultiStaBa as MULTI_STA
(wifi) - Fix misinterpretation of 802.11ax specs
(wifi) - Restore configuration of CWmin and CWmax for 802.11b
(wifi) - Set wifi-spatial-reuse.cc example to use 20 MHz BW
(wifi) - Fix assert condition in HeFEM::ReceiveMpdu()
(wifi) - Workaround to avoid a crash when expecting a TB PPDU and receiving a pre-11ax PPDU
(wifi) - Fix Duration/ID setting when TXOP Limit is exceeded
(wifi) - Enable protection for DL MU PPDUs including one PSDU, but disable for more than one PSDU until MU-RTS is implemented
(wifi) - Fix L-SIG length computation for HE TB PPDUs
(wifi) - Clear PSDU map of HE FEM when needed
(wifi) #459 - Fix HeCapabilities IEEE 802.11ax-compliance
(wifi) #467 - Fix recording of failed association process
(wifi) #468 - Fix wrong txDuration for trigger frame
(wifi) #473 - Discard preamble state for truncated TX or device in OFF
(wifi) #475 - Assert when sending OFDMA DL to STAs with different TIDs
(wifi) #480 - 2.4GHz remote station manager internal collision issue
(wifi) #483 - Cancel EndOfMpdu events when cancelling all events
(wifi) #500 - Clear PHY RX event if switching channel in IDLE and CCA_BUSY state
(wifi) #507 - Set CS Required field according to 802.11ax specs
(wifi) #600 - Fix HT Operation Primary Channel setting
(wifi) #609 - STA checks that a Multi-STA BA is sent by the AP it is associated with
(lr-wpan) #742 - Add default values to non-initialized structs with primitive variables in LrWpanPhy

Release 3.35

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.35.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-7 or later, or LLVM/clang++-8 or later
Python 3.6 or later
(macOS only) Xcode 11 or later

Python API scanning only works for Python versions 3.6 through 3.8, due to an upstream toolchain limitation.

This release has been tested on the following systems:

Fedora 34 with g++-11.2.1 and clang++-12.0.1; Python 3.9.7
Fedora 33 with g++-10.3.1 and clang++-11.0.0; Python 3.9.6
Ubuntu 21.04 with g++-11.1.and clang++-12.0.0; Python 3.9.5
Ubuntu 20.04 with g++-9.3.0 and clang++-10.0.0; Python 3.8.10
Ubuntu 18.04 with g++-7.5.0 and clang++-6.0.0; Python 3.6.9
macOS 10.15.7 (Catalina) with Xcode 12.4 (Apple clang-1200.0.32.29, Python 3.9.1)

This release has discontinued support for g++-5 and g++-6 compilers, and for macOS Xcode 10.

New user-visible features

ns-3 has switched to the C++17 standard by default, although the more advanced constructs (beyond C++11) are generally avoided in the header files, to stay compatible with the Python API scanning framework.

(antenna) Extend UniformPlanarArray to have a configurable polarization slant angle
(buildings) Add example program demonstrating group mobility with the buildings-aware random walk mobility model, and a script to animate the group motion.
(config-store) OBSOLETE Attributes are not anymore saved.
(config-store) New ConfigStore::SaveDeprecated Attribute (default false) to avoid to save DEPRECATED attributes.
(core) Add TracedCallback::IsEmpty to know if a TracedCallback has any callback associated.
(core) Add std::hash<ns3::Ptr<T>> to allow seamless use of Ptr as key in unordered_maps.
(core) Print available values on EnumChecker::GetValue () error
(internet) Added getters and setters for source and destination in Ipv6Header consistent with Ipv4Header naming.
(internet) New functions SetAddress () and GetAddress () are added, corresponding to SetLocal () and GetLocal () respectively in Ipv4InterfaceAddress to keep consistency with Ipv6InterfaceAddress.
(nix-vector-routing) Support for IPv6 Nix-Vector routing. Existing nix-simple and nms-p2p-nix examples are available in IPv6 as well.
(nix-vector-routing) ipv4-nix-vector-helper.h has been deprecated in favour of nix-vector-helper.h.
(nix-vector-routing) ipv4-nix-vector-routing.h has been deprecated in favour of nix-vector-routing.h.
(internet) Added new function IsInSameSubnet () in Ipv4InterfaceAddress similar to Ipv6InterfaceAddress::IsInSameSubnet (). It checks if the two Ipv4Address are in the same subnet.
(nix-vector-routing) Nix-Vector routing supports topologies with multiple WiFi networks using the same WiFi channel object.
(mobility) Add GroupMobilityHelper and demonstrate its use with a new program that configures the Reference Point Group Mobility model for a number of nodes.
(wifi) Add support for 11ax MU EDCA Parameter Set.
(wifi) MPDUs discarded because they became "old" (from the Block Ack agreement point of view) are now traced using the DroppedMpdu trace source of RegularWifiMac and with the WIFI_MAC_DROP_QOS_OLD_PACKET reason.

Bugs fixed

(applications) #449, #453 - add correct receiving address to PacketSink traces for UDP.
(config-store) #443 - do not save obsolete attributes
(energy) #423 - SimpleDeviceEnergyModel calculation of consumed energy
(fd-net-device) #441 - Fix double dequeue on device stop
(internet) - Ipv4L3Protocol duplicate detection now accounts for sent packets, not just forwards.
(lte) !703 - Fix global-buffer-overflow when nprb is equal to zero
(mobility) - Initialize HierarchicalMobilityModel and avoid course change stream corruption
(nix-vector-routing) #450 - Avoid recalculation if path doesn't exist
(tcp) #407 - Align TcpCubic::GetSsThresh() with Linux
(tcp) #410 - Fix TcpWestwood bandwidth estimation bug
(traffic-control) #258 - Avoid overflow, divide-by-zero in TbfQueueDisc
(traffic-control) !706 - Fix FqPIE qdisc not using attributes
(wifi) - Always track interference when not locking on PPDU

Release 3.34

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.34.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-7 or later, or LLVM/clang++-8 or later
Python 3.6 or later
(macOS only) Xcode 10.1 or later

This release has been tested on the following systems:

Fedora 33 with g++-10.2.1 and clang++-11.0.0; Python 3.9.2
Ubuntu 21.04 with g++-11.1.0 and clang++-12.0.0; Python 3.9.5
Ubuntu 20.04 with g++-9.3.0 and Python 3.8.5
Ubuntu 18.04 with g++-7.5.0 and Python 3.6.9
macOS 10.15.7 (Catalina) with Xcode 12.4 (Apple clang-1200.0.32.29, Python 3.9.1)
macOS 10.13.6 (High Sierra) with Xcode 10.1 (Apple clang-1000.11.45.5, Python 3.7.1)

New user-visible features

(antenna) Added PhasedArrayModel, providing a flexible interface for modeling a number of Phase Antenna Array (PAA) models
(antenna) Replaced the ThreeGppAntennaArrayModel with a UniformPlanarArray model, extending the new PhaseAdrrayModel
(antenna) Improved the Angles class to be more robust and user-friendly.
(antenna) AntennaModel child classes have been extended to produce 3D radiation patterns
(internet) Support for IPv6 stateless address auto-configuration (SLAAC).
(network) Improved support for bit fields in header serialization/deserialization.
(network) Added support for DLT_LORATAP DataLinkType to PCAP files
(network) More arithmetic operators are provided for DataRate objects
(nix-vector) Nix-Vector routing supports multiple interface addresses and can print out routing paths.
(olsr) Add support for printing OLSR headers
(sixlowpan) Added support for stateful (i.e., context-based) RFC6282 compression.
(tcp) TCP CUBIC is now the default TCP congestion control, replacing NewReno.
(tcp) A BBRv1 congestion control model has been added.
(traffic-control) Added FqCobalt queue disc with L4S features and set associative hash.
(traffic-control) Added FqPIE queue disc with L4S mode.
(wifi) Add support for 802.11ax DL and UL OFDMA, and a round-robin multi-user scheduler
(wifi) Added 802.11ax support to MinstrelHt rate control algorithm.
(wifi) The PHY layer has been refactored: the amendment-specific logic has been ported to PhyEntity classes and WifiPpdu classes
(wifi) The MAC layer has been refactored. The MacLow class has been replaced by a hierarchy of FrameExchangeManager classes, each adding support for the frame exchange sequences introduced by a given amendment.
(wifi) Add ThompsonSamplingWifiManager rate control algorithm.
(wifi) Holland PHY configuration has been removed from the model
(wifi) HT Greenfield (HT_GF) preamble support has been removed from the model
(wifi) Added the ability to configure the primary 20 MHz channel for 802.11 devices operating on channels of width greater than 20 MHz
(wifi) Some wifi/src/model files were moved to the relevant subfolders (non-ht, ht, vht, he, and rate-control)
(wifi) Stations perform TXOP recovery if the transmission of a non-initial MPDU in a TXOP fails
(wifi) Stations keep track of the TXOP holder and ignore the NAV when they receive an RTS frame from the TXOP holder
(wifi) The TxOkHeader and TxErrHeader trace sources of RegularWifiMac have been obsoleted and replaced by trace sources that better capture the result of a transmission (AckedMpdu, NAckedMpdu, DroppedMpdu, MpduResponseTimeout and PsduResponseTimeout)
(wifi) Bianchi example program extended to support 802.11n/ac/ax rates
(wifi) ErrorRateModel API extended to support link-to-system models

Bugs fixed

(antenna) Fix random angle generation for the 3gpp channel model.
(build) #52 - Fix and standardize Boost detection
(build) #352 - Handle multiple attempts to configure C++ standard
(core) #349 - Warn about Config::SetDefault() of deprecated attribute
(internet) #385 - IPv6 NA are now sent directly by the NetDevice
(lr-wpan) #382 - Fix Tx power calculation from PIB attribute
(lte) #285 - Check the RandomAccess status of an RNTI to whom the preamble was assigned
(lte) #322 - Add Channel pointer value type attribute to REM helper
(lte) #354 - Use uint16_t for srsIndex instead of uint8_t
(lte) #395 - Add transmission buffer size for RLC Acknowledged Mode
(lte) !555 - Remove assert upon RAR timeout in RLF example and..
(lte) !605 - Make sure RNTI exists before removing UE context
(lte) - Set UeRrcSapProvider only if RNTI exists at the eNB
(nix-vector) #393 - Avoid changing routing-dependent members
(sixlowpan) #358 - Use correct fragment size when using mesh routing.
(tcp) #374 - Assume TCP RTT is one microseconds if it measures as zero
(uan) #129 - EndTx moved to PhyListener
(uan) #293 - Fixed integer truncation in window computation
(wave) Fix compilation and runtime issues with vanet-routing-compare.cc
(wifi) #418 - Fix HE A-MPDU Max Size Upper Bound
(wifi) - Compare received power per MHz to normalized RX sensitivity

Release 3.33

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.33.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features are available on all systems):

g++-5.4 or later, or clang++-8 or later
Python 3.5 or later
(macOS only) Xcode 10.1 or later

This release has been tested on the following systems:

Arch Linux with g++-10.2.0 and clang++ versions 8-11, Python 3.9.1
Fedora 33 with g++-10.2.1 and clang++-11.0.0; Python 3.9.1
Ubuntu 20.04 with g++-9.3.0 and Python 3.8.5
Ubuntu 18.04 with g++-7.5.0 and Python 3.6.9
Ubuntu 16.04.6 with g++-5.4.0 and Python 3.5.2
Linux Mint 20 Ulyana with g++-9.3.0 and Python 3.8.5
macOS 11.1 (Big Sur) with Xcode 12.3 (Apple clang-1200.0.32.28), Python 3.8.2 (system) and Python 3.9.1 (Homebrew)
macOS 10.15.7 (Catalina) with Xcode 12 (Apple clang-1200.0.31.1, Python 3.9.1)
macOS 10.13.6 (High Sierra) with Xcode 10.1 (Apple clang-1000.11.45.5, Python 3.7.1)

New user-visible features

(core) A new Length class has been added to represent lengths with an explicit unit, rather than the use of raw numbers (ints, doubles) with implicit length.
(core) A flexible CsvReader class has been introduced to allow users to read in csv- or tab-delimited data.
(lr-wpan) Added support for handling differences between RFC4944- and RFC6282-style IPv6 address expansion
(mobility) The ListPositionAllocator can now input positions from a csv file.
(mpi) A new Enable call was added that takes a user supplied MPI_Communicator, which enables (optional) partitioning of the MPI processes. See !389.
(propagation) A channel condition model for vehicular scenarios was added. See !435
(tcp) A model for TCP CUBIC congestion control has been added.
(tcp) TCP handling of ECN has been improved with the addition of a Congestion Window Reduced state
(tcp) TCP DCTCP includes a trace source for tracing the alpha value
(wifi) A new table-based error model based on link simulations has been added (TableBasedErrorRateModel) and made the default for 802.11n/ac/ax simulations.
(wifi) Add error table support for LDPC FEC encoding (BCC or LDPC may now be selected)
(wifi) Add PHY layer support for High Efficiency Multi Users [HE-MU] access, including High Efficiency Resource Units (HE RU) and PCAP support
(wifi) Add option to configure the OFDM transmit spectrum mask

Bugs fixed

(applications) #444 - Report Tx bytes from UdpClient
(core) #265 - Time is not rounded when created from an int64x64_t
(core) #277 - Make Time::As() print with autoscaled unit
(core) #302 - Time is not rounded when created from an int64x64_t
(internet) #272 - Add missing data to Ipv[4,6]PacketInfoTag
(internet) !440 - Loopback IPv4 address should have HOST scope
(lte) #273 - When removing LC, remove also its BSR
(lr-wpan) #314 - Multicast/broadcast must not generate ACKs
(mobility) #276 - Make EnableAsciiAll connect in a failsafe way
(tcp) TcpCongestionOps objects can now be accessed by config paths
(tcp) #783 - Update previousLost and priorInFlight on reception of ACK
(wifi) #284 - Fix memory consumption issue for saturated devices
(wifi) Fix Minstrel HT statistics update window duration
(wifi) Fix incorrect calculations for 1024-QAM when using NistErrorRateModel
(wifi) Fix maximum channel number that can be selected for the PHY
(wifi) Set BER threshold for Ideal rate manager to 1e-6 to avoid high PER for high MCS values
(wifi) Reduce precision to fix infinite loop when Ideal rate manager as used with Yans error rate model
(wifi) Report reception of BAR to WifiRemoteStationManager
(wifi) TXOP durations were not always being traced

Release 3.32

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.32.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features available on all systems):

g++-4.9 or later
Xcode 10.1 or later
Python 3.5 or later

Starting with ns-3.30, Python 3 has been the only supported Python version, and scripts default to Python 3 usage.

This release has been tested on the following systems:

Fedora 32 with g++-10.2.1 and Python 3.8.5
Fedora 32 with clang-10.0.0 and Python 3.8.5
Ubuntu 20.04 with g++-9.3.0 and Python 3.8.2
Ubuntu 18.04 with g++-7.5.0 and Python 3.6.9
Ubuntu 16.04.6 with g++-5.4.0 and Python 3.5.2
macOS 10.15.7 (Catalina) with Xcode 12
macOS 10.13.6 (High Sierra) with Xcode 10.1

New user-visible features

(build system) Added "--enable-asserts" and "--enable-logs" to waf configure, to selectively enable asserts and/or logs in release and optimized builds.
(build system) The "--enable-build-version" option has been added to waf configure, allowing users to embed version information in the libraries
(build system) Added support for EditorConfig
(config-store) Improved the RawTextConfig output (see !93)
(core) Added capability to configure STL pair and containers as attributes
(core) The default timestamp print format for logging statements has been changed to use the As() method that prepends +/- and appends the time unit
(fd-net-device) Added two enhanced emulation devices based on netmap and DPDK
(mobility) Add CartesianToGeographic coordinate conversion capability
(network) Packet tags are now serialized and deserialized for distributed simulations
(network) Added LollipopCounter, a sequence number counter type
(olsr) Some internal OLSR API has been opened up to enable cross-layer access
(tcp) Support for dynamic pacing in TCP.
(tcp) Added TcpLinuxReno congestion control (aligns with Linux 'reno'
(tests) test.py text output now distinguishes between TestSuites and TestCases congestion control).
(traffic-control) Added, to PIE queue disc, queue delay calculation using timestamp feature (Linux default behavior), cap drop adjustment feature (Section 5.5 of RFC 8033), ECN (Section 5.1 of RFC 8033) and derandomization feature (Section 5.4 of RFC 8033).
(traffic-control) Add support for L4S mode to CoDel and FqCoDel queue discs
(traffic-control) Add Active/Inactive feature to PIE queue disc.
(traffic-control) Add ECN and L4S support for CoDel, FqCoDel, Cobalt queues
(wifi) Add 6 GHz band support for 802.11ax
(wifi) RIFS support has been removed from the model

Bugs fixed

(applications) Handle possible partial socket sends (during emulation)
(applications) Remove stray exit call from OnOffApplication
(internet-apps) Fixes DHCP behaviour when interface goes down and back up
(lte) #224 - The scheduled SendMeasurementReport() event doesn't cancel after link failure detection
(mesh) - Enable possible use with SpectrumWifiPhy
(network) #264 - Rounding is more accurate for DataRate transmission times
(network) !424 - Fixed instantaneous send behavior in SimpleNetDevice when queue is empty
(tcp) !368 - Fix assert in tx-buffer when loss rate high and w/o SACK
(tcp) !367 - Stop to merge items whose m_lost values are different
(tcp) - Fix TcpRateOps to update m_ackElapsed like Linux
(traffic-control) #225 - Do not ECN mark packet twice within a CoDel queue
(wifi) - Fix radiotap header for received 802.11ax PPDUs
(wifi) - Do not send VHT capabilities when operating in 2.4 GHz band
(wifi) #252 - Correctly handle multicast frames

Release 3.31

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.31.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all ns-3 features available on all systems):

g++-4.9 or later
Xcode 10.1 or later
Python 3.5 or later

Starting with ns-3.30, Python 3 has been the only supported Python version, and scripts default to Python 3 usage.

This release has been tested on the following systems:

Fedora 32 with g++-10.1.1 and Python 3.8.3
Fedora 32 with clang-10.0.0 and Python 3.8.3
Fedora 29 with g++-8.3.1 and Python 3.7.5
Ubuntu 20.04 with g++-9.3.0 and Python 3.8.2
Ubuntu 18.04 with g++-7.5.0 and Python 3.6.9
Ubuntu 16.04.6 with g++-5.4.0 and Python 3.5.2
macOS 10.15.3 (Catalina) with Xcode 11.3
macOS 10.13.6 (High Sierra) with Xcode 10.1

New user-visible features

(antenna) Model for antenna arrays based on 3GPP model (part of Integration of the 3GPP TR 38.901 fast fading model)
(buildings) Random walk mobility model that does not allow nodes to enter buildings
(core) The CommandLine facility can now add the Usage message to the Doxygen for the program
(internet) TCP DCTCP model
(internet) An option to enable IPv4 hash-based multicast duplicate packet detection (DPD) based on RFC 6621
(lte) Trace sources for uplink PSD and RBs
(propagation) 3GPP TR 38.901 pathloss and channel condition models
(spectrum) Matrix-based channel model base class to support antenna arrays
(spectrum) 3GPP pathloss, channel and fast fading models
(stats) A new interface to SQLite
(tests) Capability to run an example program as a regression test
(traffic-control) Support for the Cake set-associative hash to the FqCoDel queue disc
(traffic-control) Support for ECN marking to CoDel and FqCoDel queue discs
(wifi) A Bianchi (saturation) example with a comparable MATLAB model
(wifi) The idealized wifi rate control includes better support for different MIMO modes and channel widths

Bugs fixed

If available, the numbers below make reference to a Bugzilla bug number, GitLab issue number (prefixed by '#'), or GitLab merge request number (prefixed by '!')

(build system) #119 - Waf --lcov-report option was broken
(buildings) #80 - Update indoor/outdoor status of a moving node
(core) Bug 2725 - EmpiricalRandomVariable should not interpolate
(documentation) Bug 2636 - Add to doxygen a list of all registered TypeIds
(internet) - Fix Ipv6Prefix length calc and add explicit prefix length constructors
(internet) - IPv6 Duplicate Address Detection (DAD) must use Solicited-Node multicast address
(internet) #111 - Rip and RipNg don't receive unicast packets
(internet:tcp) - call NotifyConnectionFailed on SYN timeout
(internet:tcp) #179 - Avoid incorrect exit of LAST-ACK state
(internet:tcp) #182 - Fix SACK list cleaning in TcpOptionSack::Deserialize()
(internet:tcp) !156 - Enable entering CA_RECOVERY despite large sequence number increase
(internet:tcp) !157 - Prevent sending outside receiver window
(lr-wpan) #212 - Rx callback must have both source mac and pan id
(lr-wpan) !283 - Beacon collisions and timings
(lr-wpan) !326 - Inactive Periods Queue fix
(lte) #106 - Inconsistent imsi representation in LTE module
(lte) #196 - Remove LteSecondaryCellSelectionTestSuite from LTE module
(lte) #221 - Stop T310 upon receiving handover command
(network) #216 - Correct the return value for PacketSocket::SendTo()
(network) !239 - Refactor DelayJitterEstimation to more closely follow RFC 1889 and RFC 3550
(propagation) !269 - Fix Okumura-Hata propagation loss model for frequency > 1.5 Ghz and medium or small city
(wifi) - Keep the medium busy if reception is aborted ahead of scheduled time
(wifi) - Fix frame capture when signals arrive at the exact same time and add additional tests to verify these cases
(wifi) - Fix MCS selection in ideal rate manager for cases with unbalanced MIMO settings and/or RX diversity
(wifi) - Fix SNR computations for MIMO
(wifi) - Fix ReportAmpduTxStatus called two times when BAR is explicitly sent upon missed BACK
(wifi) A zero value for the backoff timer might be discarded and a new value might be generated by an erroneous call to NotifyCollision().
(wifi) Bug 1909, Issue #41 - Implementation of ACK timeout
(wifi) Bug 2385, Issue #178 - IdealWifiManager can pick invalid WifiTxVector under certain MIMO conditions
(wifi) Bug 2928 - BlockAckManager::NeedBarRetransmission returns "true" infinitely
(wifi) Bug 2985 - PhyTxEnd tracecallback not implemented
(wifi) Bug 3011, Issue #172 - MIMO error rate model is incorrect
(wifi) #22 - Station long retry counter is incremented twice if BlockAck was not received
(wifi) #40 - IdealWifiManager not working if stations are moving
(wifi) #84 - Wi-Fi removing wrong header due to copy-paste error
(wifi) #94 - Retransmitted frames not marked as retransmits
(wifi) #107 - Frame capture model works incorrectly if two signals arrive at the same time
(wifi) #110 - PCAP trace file gives unexpected results
(wifi) #116 - Incorrect state when receiving A-MPDU in WifiPhy
(wifi) #165 - Notify station manager when a BlockAck has not been received after the transmission of an A-MPDU
(wifi) #169 - Ideal rate manager does not work when non best-effort traffic is used
(wifi) #211 - Remove MSDUs with expired lifetime when (re)starting channel access

Known issues

In general, known issues are tracked on the project tracker available at https://gitlab.com/nsnam/ns-3-dev/issues

Release 3.30.1

Release 3.30.1 is a maintenance release that fixes the following issues from the ns-3.30 release:

fix issue with Block Ack transmit window leading to low throughput or connection dropping
fix invalid restriction on Wi-Fi VHT Capabilities MaxMpduLength field
support for Apple clang version 11.0.0 (macOS Catalina preview release)
fix the handling of ICMP time exceeded responses
fix syntax error in Wi-Fi-based Tap Bridge Python example

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.30.1.tar.bz2

Supported platforms

The list of supported platforms includes those listed for ns-3.30 plus

macOS 10.15 preview (Catalina) with Apple clang version 11.0.0

New user-visible features

Features are identical to release 3.30.

Bugs fixed

Issue #62 - ICMP does not handle ICMPv4 TIME_EXCEEDED responses
Issue #77 - Wi-Fi VHT capabilities MaxMpduLength had invalid restriction
Issue #79 - Wi-Fi connection drop or low throughput due to Block Ack transmit window
Example program tap-wifi-virtual-machine.py had a syntax error
Issue #80 - Indoor/outdoor status is not updated when the node moves

Release 3.30

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.30.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all features available on all platforms):

g++-4.9 or later
Xcode 10.1 or later
Python 3.5 or later

Starting with ns-3.30, Python 3 will be the only supported Python version, and scripts will default to Python 3 usage. Python 2.7 may continue to work in the near term.

This release has been tested on the following systems:

Fedora 30 with g++-9.1.1
Ubuntu 19.04 with g++-8.3.0
Ubuntu 18.04 with g++-7.4.0
Ubuntu 16.04.6 with g++-5.4.0
Linux Mint 19 Tara with g++-7.3.0
macOS 10.14.6 (Mojave) with Xcode 10.3
macOS 10.13.6 (High Sierra) with Xcode 10.1

New user-visible features

(core) ShowProgress object can be used to report on simulation execution
(wifi) Preamble detection can now be modelled and is enabled by default.
(wifi) 802.11ax spatial reuse is now supported.
(lte) Radio Link Failure (RLF) functionality is now supported.
(lte) LTE/EPC model enhanced with new features: SGW, PGW, MME are full nodes; new S5 interface between SGW and PGW, allows simulations with multiple SGW/PGW
(lte) LTE eNB RRC extended to support improved S1 signalling model
(lte) Backhaul links can now use any link technology, not just point-to-point
(traffic-control) Cobalt queue disc model has been added.

Bugs fixed

During this release cycle, the project transitioned from a Bugzilla issue tracker to a GitLab.com issue tracker. Bugs fixed from the Bugzilla tracker include:

Bug 2339 - lte: Use only the active RBs for uplink PSD computation
Bug 2460 - wifi: Refactor detection thresholds in WifiPhy and add a new sensitivity threshold to throw away weak signals
Bug 2470 - wifi: Handshake to setup the Block Ack Agreement is not protected
Bug 2637 - build: macOS SDK headers in non-standard place
Bug 2860 - mobility: Set Z coordinate for position-allocation classes
Bug 2861 - lte: Forward TXOPs to the RLCs of SCCs
Bug 2893 - lte: GetPgw in helper should be const
Bug 2979 - lte: Remove unused code from UE RRC and UE CCM
Bug 2980 - lte: Reset MAC and PHY of secondary carriers upon handover
Bug 2982 - lte: Configure UE MAC SAP LteMacSapUser properly
Bug 2988 - lte: Correction in L3 filtering formula used for UL power control
Bug 2990 - internet: IPv6 packet shouldn't be marked with SocketIpTtlTag
Bug 2992 - lte: Send method of the LteUeNetDevice doesn't use protocolNumber parameter
Bug 2993 - build: Waf --enable-sudo option broken
Bug 2997 - lte: EpcTft::PacketFilter::Matches does not use ipv6 address to match an IP packet
Bug 3007 - build: Boost library configuration in contrib
Bug 3027 - lte: S1 signalling is done before RRC connection establishment is finished

Bugs fixed from the GitLab.com issue tracker include:

Issue #11 - mobility: Rectangle::GetClosestSide returns the correct side also for positions outside the rectangle
Issue #14 - build: Check file timestamps instead of hashes for changes
Issue #15 - build: Fix build erroneous order constraint warnings
Issue #27 - wifi: Re-compute the A-MPDU after an RTS/CTS exchange fails
Issue #28 - wifi: wifi error model: coded bits vs. data bits
Issue #30 - wifi: Sequence number wrap around in MacLow::ReceiveMpdu
Issue #32 - wifi: Example "rate-adaptation-distance.cc" fails.
Issue #33 - wifi: Issues with QosTxop::StartNextPacket
Issue #35 - wifi: Unexpected EDCA performance under virtual collisions for 802.11n
Issue #42 - wifi: Check configured capture window for capture
Issue #43 - core: Check if ObjectFactory has been configured
Issue #45 - wifi: Wi-Fi transmits frames outside BlockAck window
Issue #46 - internet: Export headers for transport protocol modularity
Issue #47 - core: Return non-const reference when a const Ptr is dereferenced
Issue #48 - wifi: Incorrect sequence comparison in BlockAckManager::NeedBarRetransmission
Issue #53 - lte: Token Bank Fair Queue Scheduler is creating a transmit opportunity of 0 bytes
Issue #54 - lte: RadioBearerStats are not correctly connected
Issue #70 - visualizer: Update configuration of GooCanvas.CanvasEllipse
Merge request !19 - wifi: Rework MSDU and MPDU aggregation code
Merge request !22 - spectrum: Fix order of PHYs stored in MultiModelSpectrumChannel
Merge request !30 - lte: Fix PDU delivering at the edge of reordering window
Merge request !43 - traffic-control: Install FqCoDelQueueDisc by default
Merge request !55 - lte: Reset preamble transmission count before starting NC based RACH
Merge request !65 - tcp: Call BytesInFlight method before processing ack
Merge request !67 - wifi: Pass number of data bits instead of coded bits to error models
Merge request !85 - uan: Fix MAC address variable shadowing in subclasses

Other issues fixed:

core: Replace int64_t operator/(Time,Time) with exact int64x64_t version, add int64x64_t scaling.
core: Refactor LogTimePrinter, LogNodePrinter
energy: Update remaining energy even if simulation has finished
flow-monitor: Fix FlowMonitor::Stop () method
mobility: Allow AssignStreams after construction for SteadyStateRandomWaypointMobilityModel
lte: Add attribute to configure the periodicity of DL CQI reports
lte: Fix type of them_rapIdRntiMap key
lte: Various updates of the ComponentCarrier subclasses to accommodate NR
lte: Fix issue with use of packet tag in LTE PDCP and RLC by using byte tag
visualizer: Fix various issues with Python 3 and X server compatibility
wifi: Fix A-MPDU reception logic
wifi: Fix noise interference calculation
wifi: Do not allow S-MPDU transmission as long as ADDBA handshake not established
wifi: Fix frequencies for channels 54 and 126
wifi: Fix rate used to send Block Ack Request frames
wifi: Check that SSID in probe requests is either broadcast or corresponds to AP SSID
wifi: Do not call ReportDataFailed if retransmission not needed
wifi: Fix duplicate MPDUs sent in an A-MPDU when explicit BARs are disabled
wifi: Fix issues when MSDU lifetime is expired
wifi: Enforce capture window duration in frame capture model, and fix capture model for A-MPDU
wifi: Correct handling of timeout situations during block ack agreement setup
wifi: Return correct serialized size for AmpduTag
wifi: Fix incorrect channel width when HT, VHT, or HE STA received legacy PPDU

Known issues

In general, known issues are tracked on the project tracker available at https://gitlab.com/nsnam/ns-3-dev/issues

Release 3.29

This release is dedicated to the memory of project co-founder George Riley.

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.29.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all features available on all platforms):

g++-4.9 or later
Apple LLVM version 7.0.2 or later
clang-3.3 or later

In addition, Python 2.7 (Python 2 series) or Python 3.4-3.7 (Python 3 series)

This release has been tested on the following platforms:

Ubuntu 18.04 (64 bit) with g++-7.3.0 and Python 2.7.15
Ubuntu 16.04 (64 bit) with g++-5.4.0 and Python 2.7.12/3.5.2
Fedora Core 28 (64 bit) with g++-8.1.1 and Python 2.7.15/3.7.0
Fedora Core 26 (64 bit) with g++-7.3.1 and Python 2.7.14/3.6.5
macOS High Sierra 10.13.5 with Xcode 9.4.1, Apple LLVM version 9.1.0, Python 2.7.10

New user-visible features

(buildings) A new position allocator has been added to the buildings module. The allocator places nodes randomly but in a manner that rejects positions that are located within buildings defined in the scenario.
(applications) Add 3GPP HTTP model
(traffic-control) Add priority queue disc (PrioQueueDisc)
(tcp) Added PRR as recovery algorithm
(wifi) Add a new trace source to StaWifiMac to trace beacon arrivals
(network) Add a method to allow random variable-based jitter to be added to the start times of applications in a container.
(network) Add a method to check whether a node with a given ID is within a NodeContainer.
(spectrum) A new trace source named "Gain" is added to the SpectrumChannel class. This trace is fired whenever a new path loss value is calculated. It exports pointers to the mobility model of the transmitter and the receiver, Tx antenna gain, Rx antenna gain, propagation gain and the pathloss value.
(wifi) It is now possible to transmit A-MPDUs containing up to 256 MPDUs (802.11ax only)

Bugs fixed

Bug 2299 - uan: WOSS integration missing patch
Bug 2399 - wifi: Improve scanning procedure of StaWifiMac
Bug 2451 - bindings: (partial fix) generating ILP32 bindings from LP64
Bug 2461 - core: CommandLine should handle non-option arguments
Bug 2772 - bridge: Bridge doesn't learn from packets sent to it
Bug 2801 - fd-net-device: FdNetDevice device MTU is not set correctly
Bug 2819 - traffic-control: FqCoDel handling of non-IP packets
Bug 2891 - netanim: dumbbell-animation breaks when RightCount > LeftCount
Bug 2901 - core: Add CommandLine::Parse (const std::vector<std::string>> args)
Bug 2902 - build: missing modules cause Waf to run indefinitely
Bug 2908 - build: Check if pybindgen version exists before use
Bug 2911 - aodv: Binary exponential backoff can become unlimited
Bug 2914 - tcp: Adv Win resilience to SequenceNumber wrap-around
Bug 2915 - build: Enforce gcc minimum version
Bug 2920 - wifi: Default MaxSlrc and fragmentation threshold values differ from standard
Bug 2921 - tcp: Add min_cwnd variable to LEDBAT
Bug 2923 - tap-bridge: UseLocal mode uses wrong MAC address
Bug 2924 - traffic-control:documentation about Peek/Dequeue usage
Bug 2925 - wifi: MinstrelHt provides strange results at low SNR with A-MPDU enabled
Bug 2926 - wifi: SSRC and SLRC mechanism not fully aligned to the standard
Bug 2927 - lte: Valgrind error in lena-x2-handover example
Bug 2931 - traffic-control: QueueDisc drops the CE marked packets
Bug 2936 - Disable -Wparentheses with GTK+ and gcc-8
Bug 2938 - build: add --disable-werror flag to Waf
Bug 2940 - traffic-control: QueueDisc SojournTime should be TracedCallback
Bug 2941 - wifi: Order bit of Frame control field of WifiMacHeader not correctly set for some frames
Bug 2948 - network: SetPriority does not support value 7
Bug 2949 - test: Exit test.py if incorrect fullness option used
Bug 2964 - wifi: IdealWifiManager keeps using the same MCS when all transmissions fail
Bug 2974 - lte: Inconsistent declaration of IPV6 methods

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.28

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.28.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal compiler requirements (other compilers supporting C++11 may also work):

g++-4.9 or later
Apple LLVM version 7.0.2 or later
clang-3.3 or later In addition, a Python 2.7 (Python 2 series) or Python 3.4 (Python 3 series) or later is required.

This release has been tested on the following platforms:

Ubuntu 17.10 (64 bit) with g++-7.2.0 and Python 2.7.14
Ubuntu 16.04 (64 bit) with g++-5.4.0 and Python 2.7.12
Fedora Core 27 (64 bit) with g++-7.3.1 and Python 2.7.14
Fedora Core 26 (64 bit) with g++-7.3.1 and g++-7.1.1, and Python 2.7.14
CentOS/RHEL 7.4 (64-bit) with g++-6.3.1 and Python 3.5.1
- Note: the default g++ version (4.8) must be upgraded
CentOS/RHEL 6.8 (64-bit) with g++-4.9.2 and Python 2.7.13
- Note: the default g++ version (4.4) must be upgraded
- Note: the default Python version (2.6) must be upgraded
OS X Sierra 10.12.6 with Xcode 9.2, Apple LLVM version 9.0.0, Python 2.7.13
OS X Yosemite 10.10.5 with Xcode 7.2.1, Apple LLVM vers. 7.0.2, Python 2.7.10

New user-visible features

(tcp) Added TCP-LP as a congestion control module
(tcp) When TCP SACK is enabled, the third rule defined in RFC 6675 regarding the next segment to transmit is followed
(tcp) Separated the CongestionWindow trace into a CongestionWindow trace and a CongestionWindowInflated trace, where the latter tracks window inflation during loss recovery as defined by the Reno algorithm
(tcp) Implemented the core functionality of TCP Pacing.
(lr-wpan) Extended addressing mode is now supported.
(internet) Ipv[4,6]AddressGenerator can now check if an address or a network is already allocated.
(internet) Ipv6AddressHelper has more pedantic checks, but more than one such helper can now be used in a program.
(lte) UEs can now use IPv6 to send and receive traffic.
(uan) The UAN module now supports an IP stack
(uan) Added some examples for running raw, IPv4, IPv6, and 6LoWPAN over UAN
(traffic-control) Added a FIFO queue disc (FifoQueueDisc) and the Token Bucket Filter (TbfQueueDisc).

Bugs fixed

Bug 1745 - There can be only one Ipv6AddressHelper in a script
Bug 1783 - tcp: Experiencing drops during fast recovery causes TCP's congestion window to blow up. Not anymore.
Bug 2107 - lte: Enable PCAP for S1 and X2 point-to-point links
Bug 2152 - lte: Fix uplink HARQ retx. out of synch at the MAC layer
Bug 2151 - lte: Generate correct redundancy version in uplink HARQ
Bug 2277 - lte: EpcTftClassifier::Classify blindly assumes that a packet has a L4 header
Bug 2505 - network: Avoid asserts in Header/Trailer deserialization
Bug 2653 - tcp: Avoid saving smaller TS in case of packet reordering
Bug 2656 - wifi: Minstrel and MinstrelHt provide different results for 802.11a/b/g
Bug 2754 - lte: Incorrect arguments passed to Asn1Header::SerializeInteger
Bug 2764 - wifi: WifiSpectrumModelId doesn't distinguish 11ax from legacy
Bug 2766 - core: Modify logging for int64x64 to avoid stack overflow
Bug 2768 - lte: LteUeNetDevice has a null MAC address
Bug 2774 - wifi: Wifi Transmitter Sends ADDBA Request Continuously Even After Transmitting Delba Frame
Bug 2791 - wifi: Interference Helper gives negative trace value for Interference Power
Bug 2807 - energy: GetTotalEnergyConsumption is not updated correctly
Bug 2809 - wifi: Wifi doesn't fully stop when energy is depleted
Bug 2813 - wifi: OFDM 10 MHz and 5 MHz PHYs do not have correct subcarrier frequency spacings
Bug 2820 - wifi: segmentation fault when Rrpaa wifi manager is used
Bug 2821 - lte: Set correct limit for UL retx. in Round Robin scheduler
Bug 2824 - ICMP opcode fr fragment timeout drop is wrong
Bug 2826 - wifi: Management frames should be sent using the lowest basic rate
Bug 2827 - wifi: Active scanning not working with 802.11n/ac/ax
Bug 2828 - OLSR simple P2P example produces wrong results
Bug 2831 - wifi: runtime channel width switch has no effect
Bug 2832 - tcp: Partial ACK triggering repeated retransmission
Bug 2836 - wifi: Missing VHT information in radiotap header when A-MPDU is used
Bug 2838 - wifi: ht-wifi-network crashes with RTS/CTS enabled and frequency set to 2.4GHz
Bug 2840 - lte: Wrong configuration of eNBs and UEs
Bug 2843 - spectrum, wifi: Incorrect channel width and center frequency provided for non-HT PPDUs when building SpectralDensity
Bug 2848 - wifi: Association ID not correctly set upon association
Bug 2849 - lte: Received RLC and PDCP PDUs are missing in the stats files
Bug 2854 - wifi: Fix 802.11ax channel width capabilities
Bug 2856 - wifi: Correct bugs and improve logging in MinstrelHt
Bug 2859 - tcp: calculation of BytesInFlight during partial recovery is fixed
Bug 2866 - tcp: Removed VS warnings on TcpSocketBase
Bug 2872 - csma: Packet copy in CsmaChannel breaks netanim tracing
Bug 2873 - tcp: Potential SIGFPE in TcpYeah
Bug 2874 - tcp: Corrected interpretation of RFC 6675 for IsLost check
Bug 2875 - tcp: Use Rule3 of RFC6675 only with SACK enabled
Bug 2876 - tcp: Do not shrink adv window after we send the FIN
Bug 2877 - wifi: Wrong data types for CWmin and CWmax
Bug 2885 - lte: Tests fail for CQA and PSS testsuites
Bug 2890 - internet: Icmpv4 "ECHO" is defined in system-wide headers
Bug 2898 - lte: Coding issue in function RrcAsn1Header::DeserializeRachConfigCommon
Bug 2899 - lte: Inconsistent type for variable cellForWhichToReportCGI
wifi: Fix wrong guard band for SpectrumWifiPhy DSSS/HR-DSSS

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.27

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.27.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements (Note: not all features available on all platforms):

g++-4.9 or later (Note: this is an upgraded requirement from ns-3.26)
Apple LLVM version 7.0.2 or later
clang-3.3 or later
Python 2.7 (Python 2 series) or Python 3.4 (Python 3 series) or later

This release has been tested on the following platforms:

Ubuntu 17.04 (64 bit) with g++-6.3.0
Ubuntu 16.04 (64 bit) with g++-5.4.0
Ubuntu 14.04.5 (64 bit) with g++-4.9.4
- Note: the default g++ version (4.8) must be upgraded
Fedora Core 26 (64 bit) with g++-7.1.1
Fedora Core 22 (64 bit) with g++-5.3.1
CentOS/RHEL 7.4 (64-bit) with g++-6.3.1
- Note: the default g++ version (4.8) must be upgraded
CentOS/RHEL 6.8 (64-bit) with g++-4.9.2
- Note: the default g++ version (4.4) must be upgraded
- Note: the default Python version (2.6) must be upgraded
OS X Sierra 10.12.6 with Xcode 9.0 and Apple LLVM version 9.0.0
OS X El Capitan 10.11.6 with Xcode 8.2.1 and Apple LLVM version 8.0.0
OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2
Windows 10 Linux Subsystem with g++-5.4.0

New user-visible features

(build) Modules can also be located in contrib/ directory (as well as src/)
(core) Logging timestamp precision has been improved
(lte) LTE carrier aggregation feature according to 3GPP Release 10 is now supported.
(traffic-control) CsmaNetDevice, SimpleNetDevice and WifiNetDevice support flow control.
(traffic-control) Added support for queue discs to mark packets, and ECN support has been added to RED
(traffic-control) A multi-queue aware queue disc modelled after Linux mq
(traffic-control) Added support for detailed statistics output of queue discs
(traffic-control) Added support for tracing queue sojourn times
(tcp) The SACK option and the RFC 6675 loss recovery algorithm are now supported.
(tcp) A LEDBAT model has been added.
(wifi) 802.11ax High Efficiency (HE) physical layer modes are now supported.
(wifi) A new RRPAA rate control mechanism has been added.
(wifi) A new trace source for TXOP duration is now supported
(wifi) Frame capture effect can now be modelled
(uan) World Ocean System Simulation (WOSS) integration, and new PER models

Bugs fixed

Bug 1034 - wifi: No trace source for packet dropping from WifiMacQueue
Bug 2007 - uan: Remove deprecation on SetRxThresholdDb
Bug 2048 - lte: Fix scheduler resource allocation when CQI==0 (out of rante)
Bug 2133 - tcp: Avoid assert when receiving data in FIN_WAIT_1 or _2 states
Bug 2214 - tcp: Use of ScheduleNow only in selected part of the code
Bug 2221 - network: Remove constraint on size of ns3::Packet Tag objects
Bug 2256 - tcp: bytes in flight now updated in TcpTxBuffer
Bug 2263 - tcp: Support processing of multiple TCP options
Bug 2285 - tcp: Loss of ack of SYN can cause improper connection setup
Bug 2367 - wifi: BlockAckManager does not remove iterators to freed items
Bug 2450 - propagation: LogDistancePropagationLossModel is not continuous
Bug 2456 - lte: MemberCschedSapProvider and Member CschedSapProvider templates
Bug 2464 - spectrum: Store spectrum conversion matrix in CSR format
Bug 2467 - spectrum: Do not schedule StartRx for receivers on other models
Bug 2471 - wifi: unable to disable Block Ack agreement for 802.11n
Bug 2477 - wifi: DCF manager assert
Bug 2485 - traffic-control: Check queue full before checking RED thresholds
Bug 2491 - wifi: replace DcfManager::MY_DEBUG
Bug 2492 - uan: Make use of RxGain attribute in UanPhyGen class
Bug 2511 - wifi: HT Greenfield is not working
Bug 2512 - traffic-control: Byte mode not configured correctly for RED test
Bug 2513 - core: ParetoRandomVariable needs a "scale", not a "mean" attribute
Bug 2518 - build: Suppress printing of list of modules for Python programs
Bug 2519 - lte: m_windowOffsetsMap.end () dereference
Bug 2520 - examples: TCP variant not configured in wifi-tcp.cc
Bug 2521 - internet: Include ipv6-option.h in wscript
Bug 2523 - lte: Generate the RLC PDU properly
Bug 2527 - internet: PrintRoutingTable adds an optional Time::Units parameter
Bug 2528 - wifi: 802.11n RIFS cannot be enabled
Bug 2529 - wifi: Missing trace for Block ACK timeout or missing MPDUs
Bug 2530 - aodv: Rename aodv::SetBalckListTimeout to aodv::SetBlackListTimeout
Bug 2531 - lte: Set HARQ feedback default value to avoid false retrasmissions
Bug 2532 - wifi: Inconsistencies between 802.11n MCS and NSS value in TXVECTOR
Bug 2533 - wifi: Provide better 802.11n/ac PHY abstraction for SIMO/MISO/MIMO
Bug 2534 - traffic-control: ARED and PIE examples should return 1 upon exit
Bug 2535 - utils: memory leak in bench-simulator.cc
Bug 2536 - wimax: fixed dead assignment and potential memory leak in wimax
Bug 2537 - traffic-control: Fix dead assignment on CoDel::DoDequeue
Bug 2538 - tap-bridge: fixed dead assignment on tap-bridge
Bug 2540 - mesh: fixed dead assignment on mesh/ie-dot11s-perr
Bug 2541 - wifi: preamble not assigned correctly
Bug 2542 - wifi: dead assignment on wifi mac-low
Bug 2543 - lte: Fix when EstimateUlSinr returns NO_SINR
Bug 2545 - flow-monitor: Optimized build fails for flow-monitor
Bug 2547 - tcp: dead assignments on various tcp congestion controls
Bug 2551 - wifi: wifi preamble should be part of TXVECTOR
Bug 2552 - wifi: Remove code duplication between Yans and Spectrum
Bug 2554 - wave: Fix static analysis warning
Bug 2556 - csma, point-to-point: Avoid modification of transmitted packets
Bug 2557 - point-to-point: Fix dead assignments in queue-discs-benchmark
Bug 2559 - tcp: TCP advertised window still incorrect
Bug 2561 - tcp: TCP can not use Connect after a BindToNetDevice
Bug 2563 - bindings: pybindgen version check to >= minimum version required
Bug 2564 - wifi: Simulation crashes when CtsTimeout triggered for A-MPDU
Bug 2565 - tcp: Do not wait for 2*MSL to notify socket close
Bug 2566 - wifi: BlockAckManager::GetNRetryNeededPackets missing some packets
Bug 2568 - examples: Avoid enumerating TCP variants
Bug 2577 - wifi: crashes when A-MPDU and multiple TOS used, upon CTS timeout
Bug 2578 - wifi: Unexpected assert "Internal collision but no packet in queue"
Bug 2584 - wifi: MacLow triggers StartNext even if there is no TXOP
Bug 2587 - tcp: Avoid overflow in htcp.cc
Bug 2590 - traffic-control: Minor enhancements in red-queue-disc{.h, .cc}
Bug 2591 - wifi: 802.11e Block Ack cannot be enabled on HT/VHT stations
Bug 2594 - wifi: vht-wifi-network very low throughput at MCS 6, 160 MHz, SGI
Bug 2596 - network: EthernetTrailer::GetFcs() should be const
Bug 2601 - wifi: HT stations should use 40 MHz width if configured 80 or 160z
Bug 2604 - wifi: QosData frames separation with Block Ack enabled
Bug 2605 - wifi: HT/VHT station sending to legacy results in null throughput
Bug 2606 - wifi: Ideal rate manager for HT/VHT station to a legacy AP
Bug 2607 - wifi: Correct overflow in channel width loop in Minstrel HT
Bug 2613 - tcp: MaxRxSequence () is sometimes too large
Bug 2614 - internet: RIP header version should be set to 2
Bug 2615 - wifi: When the TXOP limit is nonzero, fragment in some cases
Bug 2617 - traffic-control: PfifoFastQueueDisc::Peek all bands
Bug 2621 - wifi: Fix mismatch between log message and action
Bug 2624 - lte: Inconsistent coding of type and naming
Bug 2627 - internet: Ipv6RawSocket does not honor the bound interface
Bug 2628 - wifi: Simulation crashes because of an out of range TID
Bug 2629 - wifi: Assert failure in MinstrelHtWifiManager::GetLowestIndex
Bug 2632 - lte: Build error due to uninitialized variable in rem helper
Bug 2646 - lte: lena-simple-eps-emu example will never work
Bug 2647 - wifi: ideal-wifi-manager-example crashes when NSS > 1
Bug 2649 - tcp: Disabling TCP SACK doesn't fall back to NewReno
Bug 2654 - wifi: Rraa wifi manager cannot be used with 802.11b
Bug 2655 - wifi: A-MPDU simulation using TCP sometimes fails
Bug 2658 - core: Avoid unexpected TracedValue type conversions
Bug 2660 - traffic-control: TrafficControlHelper::Default configuration
Bug 2661 - wave: Fix outdated class references in documentation
Bug 2665 - internet: Ipv4RawSocket can not send to broadcast or multicast
Bug 2666 - lte: Remove deprecated variables/config paths
Bug 2668 - various: Make template classes use NS_LOG_* macros
Bug 2671 - internet: ArpCache::Entry::SetMacAddress is misspelled
Bug 2673 - wifi: run-time channel switch does not update WiFi spectrum model
Bug 2675 - traffic-control: Use correct string value in PIE example
Bug 2716 - tcp: TCP socket ignoring FIN flag when in FIN_WAIT state
Bug 2717 - internet: Fix mask for Ipv4RoutingTableEntry::CreateDefaultRoute
Bug 2722 - wifi: 802.11g sends DSSS spectrum signals inappropriately
Bug 2731 - lte: Allow retranmission in RLC AM when PR expires, vtS overflows
Bug 2732 - applications: BulkSend Tx trace is fired too much
Bug 2733 - wifi: Ideal wifi manager cannot handle NSS higher than 1
Bug 2741 - internet: IPv4 fragmentation fails on last fragment fragmentation
Bug 2744 - wifi: 802.11n/ac with RTS/CTS crashes for a large number of nodes
Bug 2751 - traffic-control: QueueDisc::Enqueue() order of operations
Bug 2756 - internet: Ipv4AddressGenerator underestimates available addresses
Bug 2757 - wifi: 802.11n/ac/ax maximum TXOP is not properly enforced
Bug 2758 - internet: IPv4 sockets bound to unicast receiving subnet broadcast
Bug 2759 - internet: Packet conversion from broadcast to subnet-directed
Bug 2760 - internet: OLSR uses unicast-bound sockets to receive broadcasts
Bug 2761 - wifi: Packet has no Traffic ID for CTS frames when A-MPDU is used
Bug 2762 - internet: BindToNetDevice behaviour is not coherent with Linux
Bug 2763 - wifi: management packets in PCAPs are marked as wrong by Wireshark
Bug 2769 - tcp: Set ssthresh correctly upon RTO
Bug 2771 - wifi: IdealWifiManager problems under different number of antennas
Bug 2776 - wifi: Fix segmentation fault in MacLow
Bug 2777 - lte: Save bearer info in m_drbMap, needed for handover request
Bug 2781 - tcp: Do not go beyond limit in TcpTxBuffer
Bug 2783 - wifi: MonitorSnifferRx SNR is invariant to RxNoiseFigure
Bug 2786 - lte: Remove unimplemented declaration
Bug 2796 - tcp: NSC TCP transmission flow control not working

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.26

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.26.tar.bz2

Supported platforms

This release is intended to work on systems with the following minimal requirements:

g++-4.8 or later
clang-3.3 or later
Python 2.7 (Python 2 series)
Python 3.4 or later (Python 3 series)

This release has been tested on the following platforms:

Ubuntu 16.04 (64 bit) with g++-5.4.0
Ubuntu 14.04 (64 bit) with g++-4.8.2
Fedora Core 24 (64 bit) with g++-6.1.1
Fedora Core 22 (32 bit) with g++-5.3.1
Fedora Core 21 (64 bit) with g++-4.9.2
CentOS/RHEL 6.7 (64-bit) with g++-4.9.2
OS X El Capitan 10.11.4 with Xcode 7.3.1 and Apple LLVM version 7.3.0
OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2

New user-visible features

(aodv) The node search radius is increased progressively (as per standard).
(build system) New --check-config option to waf to reprint the summary of optional features which are configured.
(build system) C++11 features are now supported in the codebase
(core) DES Metrics support; see the API docs for class DesMetrics.
(internet) Added TCP Vegas, Scalable, Veno, Illinois, Bic, YeAH, and H-TCP congestion control algorithms
(internet) Add a TOS field to the InetSocketAddress class
(network) SocketAddressTag has been removed from the codebase. Users can use RecvFrom (for UDP) or GetPeerName (for TCP) instead.
(traffic control) Added the FQ-CoDel and PIE queue disc models
(traffic control) Introduce Byte Queue Limits (BQL)
(wifi) A new SpectrumWifiPhy physical layer model, making use of the ns-3 spectrum framework, has been introduced. The current version of this model matches the API and behavior of YansWifiPhy closely, but over time is expected to support a different PHY abstraction and error models.
(wifi) IEEE 802.11e TXOP limits are now enforced for different access categories when a QoS MAC is configured.

Bugs fixed

Bug 231 - Avoid adding SocketAddressTag (at all)
Bug 1579 - Final fix for segfault caused by EDCA fragmentation
Bug 1797 - Rate adaptation algorithms don't work with new 802.11n/ac standards
Bug 1911 - AODV doesn't work with more than one NetDevice
Bug 1939 - Aggregating the same object to two nodes produce unexpected results
Bug 1977 - v4Ping verbose output when not explicitly stopped
Bug 2057 - ARP and Ndisc caches should be updated by receiving valid L3 packets
Bug 2069 - Avoid integer overflow in ByteTagList
Bug 2102 - Ipv4GlobalRouting confused by bridged interfaces
Bug 2123 - AODV doesn't use / honor IP TTL in the RREQ / RREP
Bug 2149 - support deprecating attributes and trace sources
Bug 2222 - incorrect EDCA behavior in case of internal collision
Bug 2270 - Support -std=c++11 by default
Bug 2306 - Raise DCF IsBusy() condition for CCA busy
Bug 2307 - Get rid of m_receivedAtLeastOneMpdu flag
Bug 2308 - PacketTag instead of ByteTag in LTE PDCP/RLC
Bug 2344 - Attribute names can't have spaces
Bug 2346 - sixlowpan CompressionThreshold limit can be violated
Bug 2347 - LrWpan Ascii traces are hooked to the wrong traces.
Bug 2351 - Fix symbol rate calculation for channels with 10 and 5 MHz width
Bug 2352 - Add 'drop oldest' drop policy to WifiMacQueue
Bug 2369 - Generate backoff if DCF requests access during AIFS
Bug 2375 - Flowmonitor parse crashes when no pkt is received
Bug 2376 - New A-MPDU might not be received if MPDUs of a previous A-MPDU are lost
Bug 2377 - SocketIpTosTag and SocketIpv6TclassTag may be added twice in UDP
Bug 2378 - A-MPDU variables are not correctly reset in YansWifiPhy when a PLCP preamble/header failed
Bug 2379 - BlockAckRequest should not be part of single-TID A-MPDUs
Bug 2380 - EdcaTxopN fails to retrieve TID for ADDBA requests, ADDBA responses and DELBA frames
Bug 2383 - IPv4 header for reassembled packets reports a wrong payload size
Bug 2386 - Move UanPhyGen out of Tx mode when energy depleted
Bug 2387 - Fix waf --check-profile command
Bug 2390 - WaypointMobilityModel::AddWaypoint lazy notify schedules an event using absolute time (should be relative time)
Bug 2392 - SYN segment advertised window should not be scaled
Bug 2395 - Upgrade pybindgen for Python >= 3.5
Bug 2396 - move utility functions to WifiPhy
Bug 2397 - add backoff and cw tracing to EDCA
Bug 2398 - add SNR tag to beacons and probe responses
Bug 2401 - Deserialize correctly the len of options in TcpHeader
Bug 2402 - IPv4 Interface forwarding state is not honored
Bug 2406 - Poor 802.11g performance in ad-hoc mode
Bug 2408 - Simulation fails when 802.11n/ac is running with HT Minstrel and pcap enabled
Bug 2412 - align WifiPhy frequency and channel number
Bug 2414 - UdpSocket doesn't call NotifyConnectionFailed
Bug 2419 - BsmApplication should use RecvFrom and not SocketAddressTag
Bug 2420 - Remove code duplication between Wifi and Wave modules
Bug 2421 - Forbid negative RemainingAmpduDuration for the last A-MPDU
Bug 2425 - UdpSocketImpl simplification
Bug 2427 - 802.11ac selects wrong slot duration
Bug 2433 - Bic does not copy private parameters
Bug 2436 - Do not send block ack if received A-MPDU not addressed to station
Bug 2438 - Routing protocols should stop processing packets coming from a non-forwarding interface
Bug 2439 - SixLowPan Compression kind need to be casted to int in the Print function
Bug 2440 - SocketIpTosTag might be added twice if a packet is sent multiple times
Bug 2442 - ConfigStore crash if object container has null item
Bug 2443 - Increase application counters to accommodate Gbps transfer rates
Bug 2444 - PcapHelper DataLinkType enum should have a name
Bug 2445 - Out of bounds array access in Minstrel HT rate control
Bug 2446 - Fix comma delimiter instead of pipe delimiter in Attributes
Bug 2448 - Run examples in traffic control test suite
Bug 2452 - Add Object::IsInitialized method
Bug 2454 - DsrRouting::NotifyDataReceipt is also triggered for wifi management packets
Bug 2461 - TCP BIC should copy private members
Bug 2468 - Simulation with A-MPDU enabled hangs when fragmentation threshold is smaller than MSDU size
Bug 2469 - send Block Ack Request upon short/long retry failures
Bug 2474 - UdpEchoClient does not call Connect with addresses of type Inet[6]SocketAddress
Bug 2477 - Partial fix for wifi asserts when transmit cancels a reception
Bug 2479 - Flow monitor does not a have a "DROP_QUEUE_DISC" drop reason
Bug 2480 - Use SQLite prepared statements
Bug 2481 - Missing or incorrect group names
Bug 2484 - Corrected the exit from CA_LOSS state in TCP
Bug 2486 - NextTxSequence was not traced back from TCB
Bug 2488 - Error in UanPdp::SumTapsFromMaxNc
Bug 2496 - BSS membership selector in SupportedRates
Bug 2500 - Ipv[4,6]RawSocket ignores IpTtl tag
Bug 2507 - ConfigStore RawTextConfigLoad doesn't reset stream error state
Bug 2508 - Duplicate of bug 2507
Bug 2514 - The maximum transmission time for VHT A-MPDUs is not correct
No BugId - Arp logging: label with request or reply properly

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.25

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.25.tar.bz2

Supported platforms

This release has been tested on the following platforms:

Ubuntu 15.10 (64 bit) with g++-5.2.1
Ubuntu 14.04 (64 bit) with g++-4.8.2
Fedora Core 23 (64 bit) with g++-5.3.1
Fedora Core 22 (32 bit) with g++-5.1.1
Fedora Core 21 (64 bit) with g++-4.9.2
Arch Linux (64 bit) with g++-5.3.0 and clang++-3.7.1
CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
OS X El Capitan 10.11.4 with Xcode 7.3 and Apple LLVM version 7.3.0
OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2
OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2
FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1

New user-visible features

(internet) The native TCP implementation has been refactored, for the following improvements:
- congestion control has been aligned with the Linux architecture, to facilitate easier coding of new congestion control algorithms or porting implementations from the Linux kernel,
- Fast Retransmit and Fast Recovery algorithms, compliant to RFCs, are shared by all TCP variants, unlike previous releases.
- TCP Hybla and TCP HighSpeed variants have been added.
(routing) The PrintRoutingTable* functions now print the following information each time they are called:
- the node ID,
- the global time,
- the local time (allowing for future introduction of per-node clocks),
- the routing protocol type
(traffic control) A traffic control sublayer has been added with the aim of introducing an equivalent of the Linux Traffic +Control infrastructure into ns-3. This layer sits in between the NetDevices (L2) and the network protocol (e.g. IP). It is in charge of processing packets and performing actions on them: scheduling, dropping, marking, policing, etc. Initial support for flow control has been added to the PointToPointNetDevice; backward-compatible support for other device types is provided.
(traffic control) A three band priority queue modelled after Linux pfifo_fast queueing discipline has been added.
(traffic control) Adaptive RED extensions have been added to the RED model
(wifi) A number of changes related to improving support for 802.11n/ac models have been introduced.
- Two rate controls compatible with High Throughput (HT) Wi-Fi modes (e.g. 802.11n/ac), Ideal and MinstrelHT, have been added
- Support for multiple spatial streams (MIMO) using existing SISO error models
- The WiFi helper API for the WifiMac sublayer, and the configuration of HT modes and parameters, has been simplified
- Better support for backward compatibility with legacy modes
(wifi) 802.11g was made backward compatible with 802.11b networks
(internet) L4 protocols (e.g., TCP, UDP, ICMP, etc.) can be demultiplexed by IP according to the incoming interface. In other words, it is now possible to use specialized L4 protocols according to the interface.
(internet) Ipv6Address::IsAllHostsMulticast() is now deprecated. FF02::3 is not in the official reserved IPv6 multicast address list.
(internet) Ipv6Address::IsAll[Nodes,Routers]Multicast() now checks the address scope beyond the simple link-local. Nodes are checked for Interface-Local, Link-Local and Realm-Local, Routers for the above plus Site-Local.
(internet) Ipv6 routing protocols must now not forward packets to upper layers unless for extremey specific cases. The Ipv6L3protocol handles almost all the packets directed to the host.
(internet) Ipv6 can now reject packets directed to an address not configured on the interface they are received from (Strong End System Model, RFC 1222).
(internet) UDP and Ipv6 RAW sockets can now join Ipv6 multicast groups. Incoming packets will be filtered according to if there's a socket listening to that group. Source filtering is left to the application.
(network) ns-3 is now capable of serializing cooked (SLL) headers. This is used in DCE to allow the generation of pcap directly readable by wireshark.
(internet) It is now possible to set custom values for RipNg Link Down (standard is 16).
(internet) permanent (static) NDISC entries can be created for IPv6
(internet) IPv4 RIPv2 protocol model is now available.

Bugs fixed

Bug 1132 - useless for loops in block-ack-test-suite.cc
Bug 1205 - EDCA is incorrectly modelled as DCF
Bug 1571 - TCP zero-window and flow control window updates by the receiver
Bug 1631 - Acoustic modem Energy consumption calc is wrong
Bug 1761 - Rounding with olsr::EmfToSeconds
Bug 1783 - BytesInFlight value fixed
Bug 1954 - Serialized size of wifi-net-device differ for TX and RX trace
Bug 1999 - PointToPointRemoteChannel invokes PointToPointChannel constructor
Bug 2003 - Missing DSSS short PLCP preamble
Bug 2041 - TCP RTO needs unit tests
Bug 2068 - Timestamp option conforms to RFC 7323
Bug 2102 - Make global routing robust to bridged links
Bug 2116 - refactoring aggregation API
Bug 2120 - 802.11g networks are not compatible with 802.11b clients
Bug 2141 - TCP DataSent callback now correctly notifies sent data, without missing bytes in particular conditions
Bug 2150 - The TCP sender keeps retransmitting and does not terminate the connection after some retries.
Bug 2159 - TCP advertises wrong receive window
Bug 2176 - Building IPv4 address from char* doesn't look reliable
Bug 2183 - LiIonEnergySourceHelper is not in the energy wscript
Bug 2184 - Integer overflow in Wi-Fi MacLow; remove dependency between tx and rx reference number field in MPDU status
Bug 2185 - WiFi MacLow may respond to errored frames that it should ignore
Bug 2193 - Simulation fails when transmitting very small MPDU subframes
Bug 2195 - Udp[*]Client can't send packets to broadcast address
Bug 2201 - Simulation fails when active probing is used in 802.11n/ac with channel bonding enabled
Bug 2206 - Split internet-apps from applications
Bug 2207 - Print node ID and time when printing routing tables
Bug 2208 - Interface index based L4 protocols
Bug 2210 - set Order field to 0 for HT/VHT
Bug 2211 - Ipv{4,6}EndPoint can cause memory corruption
Bug 2213 - Inconsistencies may exist between the selected WifiMacHelper and the chosen 802.11 version
Bug 2219 - SixLowPanNetDevice hangs trying to decode a IPv6 Fragment extension header
Bug 2224 - scope of GetAmpduExist() in EdcaTxopN
Bug 2233 - Implement RFC 1222 - Strong End System Model
Bug 2234 - Ipv6L3Protocol should trash multicast packets not interesting for the node
Bug 2238 - Ipv6 routing reorganization
Bug 2242 - Mobility of both sender PHY and receiver PHY set to sender mobility in lr-wpan-phy-test.cc example.
Bug 2243 - TCP Socket Fork() fails to copy some parameters, causing connections to close prematurely on retransmit
Bug 2246 - Some DSR LogComponents and classes are not defined in a unique way.
Bug 2247 - Disabled Fast retransmit after an RTO
Bug 2249 - LTE perl speed tests possibly broken
Bug 2252 - Nix needs StaticRouting to work
Bug 2254 - Ipv[4,6]RawSocket can return the wrong number of bytes sent.
Bug 2255 - Ipv6RawSocket does not call data sent callbacks.
Bug 2257 - Ipv[4,6]InterfaceContainer::Add are not consistent
Bug 2258 - TcpSocketBase updated options and RTT for out of range segments.
Bug 2259 - GSL not successfully enabled for Wi-Fi DSSS error rate model
Bug 2262 - Corrected initial slow start threshold value
Bug 2266 - NixRouting info are not copied during a packet fragmentation.
Bug 2267 - Wrong channel bandwidth value in pcap files
Bug 2271 - Decision to enable RTS/CTS handshake for A-MPDUs should be based on the comparison between RtsCtsThreshold and the total A-MPDU size
Bug 2272 - SixLowPan NetDevice can not send uncompressed packets larger than 802.15.4 MTU
Bug 2273 - WeakEs model should be enforced in Static and Global routing
Bug 2275 - AdhocWifiMac not compatible with 802.11n/ac
Bug 2279 - Ipv[4,6]L3Protocol::GetInterfaceForDevice speedup.
Bug 2283 - Add capability to use pcap trace files with nanosecond precision timestamps
Bug 2286 - Support for SLL header (de)serialization.
Bug 2287 - FlowMonitor is confused by IP over IP.
Bug 2288 - Ipv4 broadcast and multicast packets are replicated on all the interfaces.
Bug 2289 - RIP v2 implementation
Bug 2290 - Cannot run click examples from test.py
Bug 2292 - Uninitialized variables since commit 7c60a9f8f271
Bug 2293 - Red Queue Estimator spins when trying to compute queue average size under long idle times.
Bug 2297 - 802.11n/ac networks are not compatible with legacy clients
Bug 2302 - Fixing RTT calculation inside TCP Socket
Bug 2303 - WifiMacQueue::GetSize should cleanup queue beforehand
Bug 2304 - DSCP Set/Get are using 8 bit values instead of 6
Bug 2307 - m_receivedAtLeastOneMpdu is not always reset
Bug 2311 - save Ht/Vht capabilities info on a per-station basis
Bug 2313 - Assert failed when using aggregation and RTS/CTS
Bug 2315 - Problem when BACK Request is part of an A-MPDU
Bug 2316 - MacLow shall use a single TXVECTOR for all MPDUs belonging to a same A-MPDU
Bug 2317 - Get the non-HT reference rate of a HT MCS
Bug 2318 - MPDU Aggregation fails with TCP
Bug 2319 - BlockAckTimeout value is too low for 802.11n operating at 2.4 GHz
Bug 2320 - Add method to check whether a WifiTxVector contains a valid combination of WifiMode, number of spatial streams and channel width
Bug 2321 - Wifi rate managers should not be triggered for each MPDU when A-MPDU is used
Bug 2327 - CWmin value selection for 802.11g is not compliant with the standard rules
Bug 2328 - changes to antenna configuration should update HT MCS set
Bug 2331 - Wrong mobility model in vanet-routing-compare example
Bug 2332 - Assert failed when using aggregation and two pairs of AP-STA
Bug 2337 - WifiPhy uses channel width in Hz iso MHz
Bug 2338 - WifiMode selected for control frames may sometimes be invalid

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.24.1

Release 3.24.1 is a maintenance release that fixes three issues:

support for Xcode 7 clang compiler version
detection of Python bindings location
compilation problem on 32-bit gcc-4.4 machine

The issues prevented selected systems from being able to successfully build ns-3, and prevented the released version from being able to detect the presence of pybindgen used for Python bindings.

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.24.1.tar.bz2

Supported platforms

This release has been tested on the following platforms:

Ubuntu 15.04 (64 bit) with g++-4.9.2
Fedora Core 22 (32 bit) with g++-5.1.1
Fedora Core 21 (64 bit) with g++-4.9.2
Ubuntu 14.04 (64 bit) with g++-4.8.2
Ubuntu 12.04.4 (64 bit) with g++-4.6.3
CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
OS X Yosemite 10.10.5 with Xcode 7 and Apple LLVM version 7.0.0
OS X Yosemite 10.10.5 with Xcode 6.4 and Apple LLVM version 6.1.0
FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1

New user-visible features

Features are identical to release 3.24.

Bugs fixed

Bug 2181 - Xcode 7.0 compiler warnings trigger build failure
Bug 2182 - pybindgen required version is now a string literal
Bug 2184 - integer overflow in MacLow

Release 3.24

Availability

This release is available from: https://www.nsnam.org/release/ns-allinone-3.24.tar.bz2

Supported platforms

This release has been tested on the following platforms:

Ubuntu 15.04 (64 bit) with g++-4.9.2
Fedora Core 22 (32 bit) with g++-5.1.1
Fedora Core 21 (64 bit) with g++-4.9.2
Ubuntu 14.04 (64 bit) with g++-4.8.2
Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
OS X Yosemite 10.10.4 with Xcode 6.4 and Apple LLVM version 6.1.0
FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1

New user-visible features

(build system) Python 3 is now supported by waf and test runner programs
(wifi) 802.11ac Very High Throughput (VHT) physical layer modes are now supported.
(internet) permanent (static) ARP entries can be created for IPv4
(network) SimpleChannel allows per-NetDevice blacklists, in order to do hidden terminal testcases.
(documentation) TracedCallback function signatures now documented in Doxygen

Bugs fixed

Bug 730 - Enabling fragmentation at run-time breaks simulation
Bug 1249 - doxygen comments on device-level SetMobility ()
Bug 1482 - mesh module was producing fatal error with ASCII and netanim traces
Bug 1557 - errors in function OpenFlowSwitchNetDevice::BufferFromPacket()
Bug 1681 - m_lastNavStart is assigned twice continuously
Bug 1736 - default dot11EDCATableMSDULifetime
Bug 1901 - mesh module producing malformed pcaps
Bug 1929 - TcpL4Protocol::Send must indicate the source address to routing (if known)
Bug 1982 - AODV and mesh modules use random variables before seeds can be set
Bug 2058 - TCP window update can shrink left edge of window
Bug 2063 - FdNetDevice::SendFrom assert does not account for headers correctly
Bug 2082 - Empirical RV fails if value provided in CDF function is negative
Bug 2093 - MultiModelSpectrumChannel::GetDevice only works for 0-th index
Bug 2096 - Wrong pcap information when MPDU aggregation is used
Bug 2104 - Sequence Number passed to QosUtilsMapSeqControlToUniqueInteger instead of Sequence Control
Bug 2108 - Erroneous implementation in InterferenceHelper
Bug 2119 - Fix memory leaks in FdNetDevice test due to non-executed events
Bug 2124 - UdpSocketImpl::ShutdownRecv doesn't stop the Ipv[4,6]EndPointDemux
Bug 2125 - subclasses must chain up to base class NotifyNewAggregate
Bug 2126 - LrWpanNetDevice silently accepts no mobility on the node
Bug 2127 - Scheduler benchmark utility works in first run only
Bug 2130 - Allow SimpleChannel to simulate hidden terminals
Bug 2132 - TcpL4Protocol sends a bad-formatted RST packet
Bug 2135 - TCP doesn't honor the socket's output interface
Bug 2136 - The usage of tid in wifi and wave module shall be "if (tid > 7)" rather than "if (tid >= 7)"
Bug 2138 - SimpleNetDevice could send overlapped packets
Bug 2143 - maybe-uninitialized warning
Bug 2146 - bug in WAVE channel coordination
Bug 2148 - Ipv6Interface::SetUp doesn't re-create the Link-Local addresses
Bug 2153 - Incorrect power limits in wifi power control algorithms
Bug 2154 - Incorrect power calculation in wifi power adaptation examples
Bug 2156 - Duplicate packets when using two level aggregation
Bug 2157 - OpenFlowSwitchNetDevice::BufferFromPacket setting eth_type incorrectly
Bug 2158 - OpenflowSwitchNetDevice flooding bug
Bug 2165 - server replies to SYN (with option TS) with a SYNACK (with option TS) also if the attribute Timestamp is false
Bug 2166 - SteadyStateRandomWaypointMobilityModel directs the node to the ground
Bug 2170 - AnimationInterface outputs improperly formed XML
Bug 2171 - power-adaptation-distance.cc:202:22: error: call to 'pow' is ambiguous
Bug 2173 - WifiInformationElement::DeserializeIfPresent attempts to read beyond the end of buffer
Bug 2174 - m_rWnd not updated when segments without ACK are received
Bug 2177 - Ipv6ExtensionFragmentHeader length is initialized to a wrong value.

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.23

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.23.tar.bz2

Supported platforms

This release has been tested on the following platforms:

Ubuntu 15.04 (64 bit) with g++-4.9.2
Fedora Core 21 (64 bit) with g++-4.9.2
Ubuntu 14.04 (64 bit) with g++-4.8.2
Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
CentOS/RHEL 6.6 (64-bit) with g++-4.4.7
OS X Yosemite 10.10.3 with Xcode 6.3.1 and Apple LLVM version 6.1.0
FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1

New user-visible features

(network) CalculateTxTime has been declared obsolete. CalculateBytesTxTime and CalculateBitsTxTime are to be used instead. The return value is a Time, instead of a double.
(mobility) Classes added for converting geographic to cartesian coordinates.
(spectrum) TvSpectrumTransmitter models added to create television transmitter(s) that transmit PSD spectrums customized by attributes such as modulation type, power, antenna type, channel frequency, etc.
(wifi) Several model improvements have been made. Access points now establish BSSBasicRateSet for control frame transmissions. PLCP header and payload reception have been decoupled for improved PHY modeling accuracy. RTS/CTS with A-MPDU is now fully supported, and 802.11n stations now support two-level aggregation.

Bugs fixed

Bug 1757 - RLC AM not using NACK_SN
Bug 1974 - CalculateTxTime should return a Time, not a double
Bug 1982 - AODV and mesh use random variables before seed can be set
Bug 2004 - Wrong timeout calculation for 802.11n in WifiMac
Bug 2008 - (lr-wpan) Crash if ending rx while status change is in progress
Bug 2025 - (lr-wpan) Changing the channel doesn't affect the Tx params
Bug 2034 - (lr-wpan) CSMA-CA BackoffPeriod is too short
Bug 2054 - TCP window update can shrink the Left Edge of the window
Bug 2066 - A-MPDU reception should check for successful preamble
Bug 2067 - TCP performance when advertised window exceeds sender buffer size
Bug 2070 - Wrong report of Packets and Bytes stored in CoDeL
Bug 2073 - NDisc cache entries update timer might be stuck in a loop
Bug 2075 - A-MPDU using RTS/CTS behaves wrongly when MaxSsrc is reached
Bug 2076 - TCP MinRTO Attribute is not actually used
Bug 2077 - Icmpv6L4Protocol::HandleDestinationUnreachable must check the packet size, not its serialized size
Bug 2079 - mcs variable in ht-wifi-network example is confusing
Bug 2082 - Empirical RV fails if the value provided in the CDF member function is negative
Bug 2083 - BridgeNetDevice may send corrupted packets
Bug 2087 - Waf fails to build ns-3 if the path contains accented characters
Bug 2090 - (rip-ng) Routes may be added twice on interface activation
Bug 2093 - MultiModelSpectrumChannel::GetDevice only works for 0-th index
Bug 2095 - (wimax) Wrong values in default-traces.h for 16 QAM 3/4
Bug 2097 - ACKs should be sent using legacy rates and preambles in 802.11n
Bug 2103 - Ipv[4,6]RoutingHelper::PrintRoutingTableAll[At,Every] hangs if a node doesn't have IP

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.22

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.22.tar.bz2

Supported platforms

This release has been tested on the following platforms:

Fedora Core 21 (64 bit) with g++-4.9.2
Ubuntu 14.10 (32 bit) with g++-4.9.1
Ubuntu 14.04 (64 bit) with g++-4.8.2
Ubuntu 12.04.4 (32/64 bit) with g++-4.6.3
CentOS/RHEL 6.6 (64-bit) with g++-4.4.7
OS X Yosemite 10.10 with Xcode 6.1.1 and clang-600.0.56
FreeBSD 10.1-RELEASE (64 bit) with clang-3.4.1

New user-visible features

(wifi) Support for MPDU aggregation has been added to the wifi model, as well as a number of related example programs.
(wifi) Added two combined power and rate control mechanisms to the wifi module. The new mechanisms, PARF and APARF, are the first in the wifi module to jointly control transmission power and data rate. Two use case examples (PowerAdaptationDistance and PowerAdaptationInterference) and a test case have also been added.
(lte) In previous releases of the LTE module, the bearer release functionality was only partially supported. As an enhancement, a complete release bearer procedure is now implemented, which can be invoked by calling the new helper method LteHelper::DeActivateDedicatedEpsBearer(). The related output can be seen through the stats collected at different layers like PDCP, RLC, MAC, PHY. To support this implementation, an example and test suite is added within the LTE module examples and tests folder.
(wave) Additional support has been added for WiFi-based vehicular networks, including the channel-access coordination features of IEEE 1609.4 and a comprehensive VANET routing example that includes a Basic Safety Message (BSM) packet generator application and associated statistics counters. Together, these allow users to evaluate the performance effects in a VANET of varying transmission and channel properties (e.g., packet rate, message size, transmit power, propagation loss model, impact of routing protocol traffic, etc.).
(internet) It is now possible to print the Neighbor Cache (ARP and NDISC) by using the RoutingProtocolHelper
(stats) A new TimeProbe class has been added to hook the data collection framework to traced values emitting Time objects
(documentation) the callback function signatures for all TraceSources is documented in Doxygen
(utils) print-introspected-doxygen.cc has had several enhancements; use -h to read the usage message for details.
(core) TracedValue and TracedCallback function signatures are now documented, which required changing the TypeId::AddTraceSource API.

Bugs fixed

Bug 1405 - RttEstimator improvements
Bug 1551 - NS_LOG_COMPONENT_DEFINE inside or outside of ns3 namespace?
Bug 1726 - WiFi Minstrel rate control algorithm doesn't save state
Bug 1734 - TcpSocketBase produces spurious delayed ACKs
Bug 1758 - Yans and Nist error rate models for 5/6 code rate 802.11n HT
Bug 1770 - mesh test and example crash for 32-bit optimized builds
Bug 1774 - compute signal power around channel, not across whole band, and fix LrWpanHelper to add a default PropagationDelayModel
Bug 1791 - TCP Endpoint never deallocates when closing
Bug 1801 - Setting Wi-Fi timing parameters through WifiMac attributes (documentation fix)
Bug 1906 - 802.11n PHY configuration for 2.4GHz and 5GHz devices
Bug 1957 - UdpSocketImpl is stuck after a Close()
Bug 1968 - Missing supported 802.11n HT rates in the WifiPhy constructor
Bug 1969 - Support short guard interval durations in 802.11n
Bug 1970 - Missing NotifyAckTimeoutStartNow in MacLow::StartDataTxTimers
Bug 1971 - 802.11n at 2.4 GHz should include a signal extension duration
Bug 1972 - CommandLine duplicate argument handling: documentation updated.
Bug 1983 - FlowMonitor returns containers copies instead of references.
Bug 1986 - test result divergence for lte-frequency-reuse test
Bug 1991 - PcapFileWrapper::CaptureSize attribute (snaplen) has no effect.
Bug 1995 - avoid multiple definitions of PI
Bug 1996 - RSRQ calculation: misleading variable names
Bug 1997 - Fix PlotProbe() documentation and usage for GnuplotHelper and FileHelper
Bug 2002 - Hardcoded include paths cause breakage
Bug 2011 - Default Speed attribute in ConstantSpeedPropagationDelayModel
Bug 2016 - Radvd do not consider the SendAdvert option and don't reply to RS
Bug 2020 - Erroneous MCS field in 802.11n PCAP files
Bug 2021 - Missing const qualifier in TopologyReader::Link::Attributes{Begin,End}()
Bug 2026 - 802.11n Ness parameter badly set for data frames
Bug 2027 - Calculation of HT training symbol duration does not accurately follow 802.11n standard
Bug 2028 - remove unnecessary Time to double conversions in Wifi models
Bug 2029 - new CQI generation approach fix
Bug 2030 - provide default values for WifiTxVector
Bug 2037 - HT capabilities may print bogus chars
Bug 2038 - Stop method does not stop next wave in WaveformGenerator
Bug 2042 - LTE a3-rsrp-handover-algorithm.cc: error: overflow in implicit constant conversion
Bug 2043 - print-introspected-doxygen crashes when some modules are disabled
Bug 2044 - Buffer::Iterator::ReadNtohU16() and ReadNtohU32() not implemented correctly
Bug 2045 - Missing NS_OBJECT_ENSURE_REGISTERED in TcpTxBuffer and TcpRxBuffer
Bug 2046 - set Block Ack timeout when SetStandard is called
Bug 2047 - Ipv6EndPointDemux::Lookup may crash
Bug 2049 - CQI feedback should always use the same calculation method
Bug 2053 - In tcp-socket-base.cc, NotifyDataSent incorrectly called with retransmits
Bug 2055 - TCP TxBuffer and RxBuffer traces don't work
Nix-vector routing implementation now uses a lazy flush mechanism, which dramatically speeds up the creation of large topologies.

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.21

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.21.tar.bz2

Supported platforms

Fedora Core 20 (32/64 bit) with g++-4.8.2
Ubuntu 14.04 (32/64 bit) with g++-4.8.2
Ubuntu 12.04.4 (64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
CentOS/RHEL 6.5 (64-bit) with g++-4.4.7
OS X Mavericks 10.9 with Xcode 5.1.1 and clang-503.0.40
FreeBSD 9.2-RELEASE (64 bit) with clang-3.3

New user-visible features

The LTE module now supports the transport of the S1-U, X2-U and X2-C interfaces over emulated links via the new helper class EmuEpcHelper.
CommandLine can now provide a shorthand argument name for any Attribute.
Implemented support for Frequency Reuse algorithms in LTE module, as the outcome of GSoC 2014 project. The project also includes several sub-features, such as:
- implementation of Downlink Power Control
- implementation of Uplink Power Control
- new DL-CQI generation approach, which increases throughput if FR algorithms are used
- seven options of Frequency Reuse algorithms: LteFrNoOpAlgorithm, LteFrHardAlgorithm, LteFrStrictAlgorithm, LteFrSoftAlgorithm, LteFfrSoftAlgorithm, LteFfrEnhancedAlgorithm, LteFfrDistributedAlgorithm
- updated RadioEnvironmentMapHelper. Now RadioEnvironmentMap can be generated for Data or Control channel and for specified RbId, what is helpful when using FR algorithms
Added a CoDel queue model. CoDel queues measure and control the queue traversal delay. The ns-3 implementation is a port of the Linux implementation.
Added support for TCP timestamp and window scale options, and added ability to trace the TCP slow start threshold value.
SimpleNetDevice and SimpleChannel (used for adding basic link effects for testing of higher-layer protocols) have been extended to support the option of broadcast or PointToPoint link semantics. The bandwidth and link delay can be constrained, and it uses an output queue.
SimpleNetDevice and SimpleChannel can be installed in a node through a new helper: SimpleNetDeviceHelper.
Implemented new PacketSocketServer and PacketSocketClient applications. The primary use is in tests, to avoid using the ones from the application module that also bring in a dependency on the internet module.

Bugs fixed

Bug 1673 - Config::Set/Connect does not search for attributes in parent class
Bug 1762 - UE stuck in IDLE_CONNECTING because RRC CONN REQ is not transmitted
Bug 1811 - basic traffic generator for network module
Bug 1824 - L4 protocol sockets should support BindToNetDevice over IPv6
Bug 1831 - TcpSocket SlowStartThreshold is not a TraceSource
Bug 1851 - WifiRadioEnergyModel energy consumption values are taken from a 802.15.4 chip
Bug 1854 - std::out_of_range Problem
Bug 1858 - wireless examples not correctly recording packet reception
Bug 1860 - TCP needs the Window Scale option
Bug 1893 - issue in DoSchedUlTriggerReq with harq
Bug 1911 - AODV cannot work on nodes with more than one netdevice
Bug 1921 - Icmpv6L4Protocol::ForgeEchoRequest returns a malformed packet
Bug 1930 - Use of invalid reference in OLSR RemoveLinkTuple
Bug 1932 - NdiscCache entry is not failsafe on double neighbor probing.
Bug 1937 - FlowMonitor fails to track multiplexed packets
Bug 1942 - refactoring of lte-sinr-chunk-processor -> lte-chunk-processor
Bug 1943 - Waveform generator signal duration calc error
Bug 1951 - AODV does not update nexthop for 1-hop nodes
Bug 1955 - The IPv4 identification field should be unique per (source, destination, protocol) tuple
Bug 1960 - Wrong information on index range, about Node::GetDevice
Bug 1961 - planetlab-tap-creator "variable set but not used"
Bug 1963 - AODV can tag the same packet twice (and raise an assert)
Bug 1964 - Integer overflow on UniformRandomVariable::GetInteger()
Bug 1967 - LL Multicast is not compressed in the right way in IPHC
Bug 1981 - PyViz shell not compatible with ipython >= 0.11

Known issues

Bug 1770 - The mesh module will crash if used for g++ version >= 4.8.1 in optimized mode, on a 32-bit Linux machine. Lowering the optimization level to -O1 in this case can be used as a workaround.

Release 3.20

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.20.tar.bz2

Supported platforms

Fedora Core 20 (32/64 bit) with g++-4.8.2
Ubuntu 14.04 (32/64 bit) with g++-4.8.2
Ubuntu 12.04.4 (64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
CentOS/RHEL 6.5 (64-bit) with g++-4.4.7
OS X Mavericks 10.9 with Xcode 5.1.1 and clang-503.0.40
FreeBSD 9.2-RELEASE (64 bit) with clang-3.3

New user-visible features

A new LrWpan model, providing initial support for IEEE 802.15.4 networks
A new IPv6 routing protocol has been added: RIPng. This protocol is an Interior Gateway Protocol and it is available in the Internet module.
A new LTE MAC downlink scheduling algorithm named Channel and QoS Aware (CQA) Scheduler is provided by the new ns3::CqaFfMacScheduler object.
The Internet FlowMonitor can now track IPv6 packets.
FlowMonitor no longer tracks multicast/broadcast packets, reflecting its original design.
FlowMonitor "SerializeToXml" functions are now directly available from the helper.
The SixLowPan model can now use uncompressed IPv6 headers. An option to define the minimum compressed packet size has been added.
Simplify output of Times in a specific unit; see Time::As ()
Ipv6Extension::m_dropTrace has been removed. Ipv6L3Protocol::m_dropTrace is now fired when appropriate.
IPv4 identification field value is now dependent on the protocol field.
Fixes to support Python >= 3.3 in ns3 Python bindings
Enable selection of high precision int64x64_t implementation at configure time, for debugging purposes.

Bugs fixed

Bug 1276 - optimize NistErrorRateModel
Bug 1294 - New PeekU8 () and Read (Buffer::Iterator start, uint32_t size) methods in Buffer::Iterator
Bug 1443 - MinDistance replaced by MinLoss in FriisPropagationLossModel, to better handle conditions outside of the assumed far field region.
Bug 1653 - Extension of CommandLine interface: restored operator << (CommandLine)
Bug 1717 - Detect unsettable attributes
Bug 1730 - no model library documentation for spectrum module
Bug 1739 - The endpoint is not deallocated for UDP sockets
Bug 1786 - os << int64x64_t prints un-normalized fractional values
Bug 1787 - Runtime error when using AnimationInterface::EnablePacketMetadata() to fetch metadata of CSMA packet
Bug 1792 - Parameter logger constructor
Bug 1808 - FlowMon relies on IPv4's Identification field to trace packets
Bug 1817 - IPv4 Identification field should consider protocol as well.
Bug 1818 - FlowMonitor needs IPv6 support
Bug 1820 - models library doc: make should not rm -rf figures
Bug 1821 - Setting an interface to Down state will cause various asserts in IPv6
Bug 1829 - Multiple TCP socket entries
Bug 1837 - AODV crashes when using multiple interfaces
Bug 1838 - FlowMonitorHelper must not be copied.
Bug 1841 - FlowMonitor fails to install if IPv4 is not installed in the node
Bug 1842 - FlowMonitor SerializeToXml<Something> should be called by the helper
Bug 1843 - IPv6 extensions dropped packets do not fire L3 drop trace
Bug 1845 - FlowMonitor should discard any broadcast/multicast packet
Bug 1846 - IPv6 should send Destination Unreachable if no route is available
Bug 1850 - TCP NewReno loss behavior
Bug 1852 - cairo-wideint-private.h error cannot find definitions for fixed-width integral types
Bug 1853 - NS_LOG_FUNCTION broken on OSX 10.9
Bug 1855 - SixLowPanNetDevice is not correctly indexed
Bug 1857 - Detect location of installed boost libraries
Bug 1862 - NS_LOG="Time=*|prefix_time" causes stack overflow
Bug 1868 - Optimized builds are sensitive to -fstrict-overflow
Bug 1870 - Remove unnecessary AsInt functions
Bug 1872 - Inside RREQ processing, in case of IP duplication, packet dropped instead of being forwarded
Bug 1873 - Energy source checked to be aggregated to the node
Bug 1874 - Ipv4L3Protocol::ProcessFragment: addressCombination and idProto identifiers not properly computed
Bug 1876 - enable OLSR HNA table access
Bug 1877 - constructors missing for PropagationLossModels
Bug 1882 - int64x64 tests trigger valgrind bug
Bug 1883 - IPv6 don't consider the prefix and network when choosing output address
Bug 1885 - WifiSpectrumValue5MhzFactory::CreateRfFilter does not align with the used 5Mhz SpectrumModel
Bug 1887 - Point-to-point traces should contain PPP headers
Bug 1888 - COST231 propagation loss model: corrections
Bug 1889 - PointToPointNetDevice: In some cases MacTxDrop trace is not called
Bug 1890 - UdpClientTrace: MPEG frame size is squeezed into (insufficient) 16 bit integer
Bug 1891 - UdpSocketImpl::GetSockName doesn't return the IPv6 address
Bug 1894 - CqaFfMacScheduler needs an update
Bug 1895 - IP header Source Address changed while forwarding RREQ
Bug 1900 - Avoid floating point differences across platforms in test outputs
Bug 1903 - Namespace usage in olsr-state.cc/h
Bug 1907 - Add IsSupportedMcs method in YansWifiPhy
Bug 1912 - Avoid multiple Wifi MacTxMiddle instances
Bug 1913 - Avoid crash in Wifi BlockAckManager::GetNextPacket()
Bug 1915 - BRITE channel delay is rounded to an integer
Bug 1916 - RandomWalk2dMobilityMode default "Bounds" attribute is not a rectangle
Bug 1919 - Strip trailing semi-colons from mobility trace files
Bug 1920 - Remove DSR attributes so file can be re-loaded by config-store
Bug 1922 - WAVE GetSsid should not be fatal
Bug 1923 - Setting Active Probing to false in Wifi Sta has no effect
Bug 1924 - sensing radius and CCA

Known issues

Bug 1770 - The mesh module will crash if used for g++ version >= 4.8.1 in optimized mode, on a 32-bit Linux machine. Lowering the optimization level to -O1 in this case can be used as a workaround.

Release 3.19

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.19.tar.bz2

Supported platforms

These platforms have been tested; others may work also:

Fedora Core 20 (32 bit) with g++-4.8.2
Fedora Core 19 (32/64 bit) with g++-4.8.1
Ubuntu 13.10 (64 bit) with g++-4.8.1
Ubuntu 12.04.3 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mavericks 10.9 with Xcode 5.0.1 and clang-500.2.79
OS X Mountain Lion 10.8.5 with Xcode 5 and g++-4.2.1
FreeBSD 9.2-RELEASE (64 bit) with clang-3.3

New user-visible features

Extension to UE measurements and improved handover algorithm models in LTE module, as the outcome of GSoC 2013 project. The project also includes several sub-features, such as:
- implementation of System Information Block Type 1 (SIB1);
- a new option for automatic UE attachment using Idle mode cell selection procedure;
- improved configurability of UE measurements; and
- two options of handover algorithms for enabling automatic handover trigger in LTE simulation: A2-A4-RSRQ and strongest cell (A3-RSRP).
A new FixedRoomPositionAllocator has been added to the buildings module. It allows one to generate a random position uniformly distributed in the volume of a chosen room inside a chosen building.
A new attribute ns3::LteRlcAm::TxOpportunityForRetxAlwaysBigEnough allows to overcome the lack for re-segmentation in the RLC AM implementation by assuming that the size of a TxOpportunity is always big enough for the RLC AM PDU to be retransmitted.
After some profiling, the code of LteMiErrorModel has been optimized for speed, resulting in a significantly lower execution time of the LTE model when used with the error model enabled.
A new WiFi extension for vehicular simulation support is available in the src/wave directory. The current code represents an interim capability to realize an IEEE 802.11p-compliant device, but without the WAVE extensions (which are planned for a later patch). The WaveNetDevice modelled herein enforces that a WAVE-compliant physical layer (at 5.9 GHz) is selected, and does not require any association between devices (similar to an adhoc WiFi MAC), but is otherwise similar (at this time) to a WifiNetDevice. WAVE capabililties of switching between control and service channels, or using multiple radios, are not yet modelled.
A new IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) model is available. Using ns-3's naming convention, the acronym is expanded to SixLowPanNetDevice. The SixLowPanNetDevice is able to act as a shim between IPv6 and a NetDevice, compressing IPv6 headers according to RFCs 4944 and 6262. The SixLowPanNetDevice is meant to be used over IEEE 802.15.4 NetDevices, but it can be used on other NetDevices as well (see the manual for full details). This model precedes the general availability of an 802.15.4 model, so must be run in conjunction with a wired NetDevice model for now, or with experimental versions of 802.15.4 models.
It is now possible to use Ipv6PacketInfoTag from UDP applications in the same way as with Ipv4PacketInfoTag. See Doxygen for current limitations in using Ipv[4,6]PacketInfoTag to set IP properties.
Ipv[4,6]Interfaces not respecting the minimum MTU requirements (68 octets for IPv4 and 1280 octets for IPv6) will be automatically set as Down.
IPv6 addresses and routing tables are printed in a more conventional way, closely matching the Linux "route -A inet6" command.
Additional time units (Year, Day, Hour, Minute) were added to the time value class that represents simulation time; the largest unit prior to this addition was Second.
A new parallel scheduling algorithm based on null messages, a common parallel DES scheduling algorithm, has been added. The null message scheduler has better scaling properties when running on some scenarios with large numbers of nodes since it does not require a global communication.

Bugs fixed

Bug 1496 - Option to print log level in NS_LOG messages, and documentation.
Bug 1592 - Parsing bug in FlowMonitor example script
Bug 1756 - RLC AM Mode State Variable Bug
Bug 1763 - Message 3 should be sent using the UL GRANT in the RAR
Bug 1778 - Implement TapBridge::IsLinkUp() function
Bug 1777 - Implement the more direct way of "using" configuration of existing tap interface
Bug 1776 - Improve CRC performance for CsmaNetDevice in emulation modes
Bug 1788 - unused private field warning
Bug 1789 - missing test condition for sigma in buildings-shadowing-test
Bug 1796 - Ipv6PacketInfoTag is not filled by UdpSocketImpl::ForwardUp6
Bug 1798 - Changing the rate of onOffApplication might stop transmission
Bug 1802 - FlowMon header deserialization problem with IPv4 fragments
Bug 1803 - Lookup /NodeList/4/DeviceList/0/LteEnbRrc/UeMap/0 got no matches
Bug 1807 - Multiple bugs in Ipv4L3Protocol::LocalDeliver
Bug 1810 - IP packets can be sent on NetDevices not respecting the minimum MTU requirements
Bug 1814 - IPv6 Packet with length not multiple of 8 bytes are fragmented incorrectly.
Bug 1815 - Python bindings compilation with clang compiler toolchain
Bug 1816 - IPv4 fragmentation loses Packet tags
Bug 1877 - constructor missing for <something>PropagationLossModels

Release 3.18.2

ns-allinone-3.18.2 was released to include a bake configuration file update for Direct Code Execution. The ns-3 code in this release was unchanged from that of ns-3.18.1.

Release 3.18.1

This release is mainly to provide updated compiler support (clang/LLVM) and fix the Python API scanning facility. A few additional bug fixes and new features are described below.

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.18.1.tar.bz2

Supported platforms

These platforms have been tested; others may work also:

Fedora Core 19 (32/64 bit) with g++-4.8.1
Ubuntu 13.10 (64 bit) with g++-4.8.1
Ubuntu 12.04.3 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mavericks 10.9 with Xcode 5.0.1 and clang-500.2.79
OS X Mountain Lion 10.8.5 with Xcode 5 and g++-4.2.1
FreeBSD 9.2-RELEASE (64 bit) with clang-3.3

New user-visible features

It is now possible to randomize the time of the first beacon from an access point. Use an attribute "EnableBeaconJitter" to enable/disable this feature.
A new FixedRoomPositionAllocator helper class is available; it allows one to generate a random position uniformly distributed in the volume of a chosen room inside a chosen building.
Logging wildcards: allow "" as synonym for "=" to turn on all logging.
The log component list ("NS_LOG=print-list") is now printed alphabetically.

Bugs fixed

Bug 1779 - NS_UNUSED_GLOBAL not working in attribute test class declaration
Bug 1766 - Fixes to wifi-hidden-terminal.cc example
Bug 1722 - Avoid transmitting beacons concurrently
Bug 1691 - RTS/CTS NAV reset prematurely
Bug 1622 - Avoid waf hanging during apiscan
Bug 1616 - WifiPhyStateHelper reports false CCA_BUSY times at State trace source
Bug 1552 - Storing log name inside LogComponent class (NS_LOG) as std::string
Bug 1011 - assert failed. file=../src/devices/wifi/dcf-manager.cc
bug 945 - remove deprecated IEEE 802.11p code from wifi module
Fix aliasing bug in optimized static builds
Fix memory leak due to circular reference in MPI module
Make wifi tests more robust to random variable perturbations
Fix Time class doxygen
Fix compilation with Clang 3.2 and newer versions, including Apple Xcode 5
Miscellaneous NetAnim fixes

Release 3.18

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.18.tar.bz2

Supported platforms

These platforms have been tested; others may work also:

Fedora Core 18 (32/64 bit) with g++-4.7.2
Fedora Core 17 (32/64 bit) with g++-4.7.0
Ubuntu 13.04 (32/64 bit) with g++-4.7.3
Ubuntu 12.04 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mountain Lion 10.8.3 with g++-4.2.1
FreeBSD 9.1-RELEASE (64 bit) with g++-4.2.1

New user-visible features

Time attributes can now be bounded. See attribute-test-suite.cc for an example.
Data collection components have been added to the stats module. These components can be used to generate time series data in files and plots.
IPv6 address class 2001:db8::/32 is now dropped by routers (RFC 3849).
New generic hash function interface. Two hash functions are provided: murmur3 (default), and the venerable FNV1a. See the Hash Functions section in the Manual.
New Mac16Address has been added, Mac64Address is now in-line with Mac48Address and all the three can be used in IPv6 autoconfigure.
Previously, the use of Building models was limited to the use of the companion BuildingsMobilityModel. Now, any MobilityModel can be used with Building models.
The latest LTE module code by the LENA project has been merged, including the following new features:
- PHY support for UE measurements (RSRP and RSRQ)
- RRC support for UE measurements (configuration, execution, reporting)
- Automatic Handover trigger based on RRC UE measurement reports
IPv6 can now detect and use Path-MTU. See examples/ipv6/fragmentation-ipv6-two-MTU.cc for an example.
Radvd application have a new Helper. See the updated examples/ipv6/radvd.cc for an example.
11n- It is now possible to create a high throughput (HT) node that used the new 11n data rates and preambles.
It is now possible to request printing command line arguments to the desired output stream using PrintHelp or operator <<

Bugs fixed

Bug 760 - IP address removal can be painful
Bug 1190 - Suppress hello if bcast was sent within the last hello interval
Bug 1296 - Enhancement in Ipv[4,6]RoutingHelper
Bug 1390 - ICMPv6 Redirect are handled correctly only for /64 networks
Bug 1522 - Hidden node scenario leads to ARP failure
Bug 1584 - Old Association Request Timeouts are not canceled
Bug 1629 - Make AODV Default to Disable Hello
Bug 1643 - NdiscCache creation and existence checks
Bug 1646 - ICMPv6 Redirect are sent from global address instead of link-local
Bug 1662 - m_type not set for Ipv6OptionRouterAlertHeader
Bug 1678 - C++11 compliance problem with std::pair"
Bug 1682 - ./waf crashes on FC10
Bug 1683 - IPv6 autoconfigured don't use infinite lifetimes
Bug 1669 - ns-3 should support binding two and three (possibly more) arguments
Bug 1675 - Throughput computation error in Wireless examples
Bug 1687 - wscript features report doesn't respect NOCOLOR
Bug 1688 - Routers should advertise themselves from the link-local address
Bug 1689 - IPv6 shouldn't add a default gateway without checking the Router lifetime
Bug 1690 - missing header files from wifi wscript
Bug 1697 - ICMPv6 Redirect trigger contains multiple bugs
Bug 1698 - mobility.SetPositionAllocator misses prefix "ns3::"
Bug 1700 - Ipv6RawSocket does not honor the bound address when sending packets
Bug 1701 - Ipv6StaticRouting: the source address should match the destination scope
Bug 1702 - Ipv6InterfaceContainer::SetRouter should not always add the router as the default router.
Bug 1703 - Nodes don't react to a DAD
Bug 1712 - The IP (v4 and v6) forwarding needs a test
Bug 1718 - Ipv4StaticRouting log component is misspelled
Bug 1720 - IPv6 Fragmentation cause crashes
Bug 1721 - Path MTU isn't handled properly
Bug 1723 - name clash in ipv4-header.h with <termios.h>
Bug 1727 - Ping6 should use a proper source address
Bug 1728 - Radvd application is missing an Helper
Bug 1731 - lte-phy-error-model passes unexpectedly
Bug 1738 - strict aliasing compiler bug
Bug 1742 - IPv6 HbH and Dst Extension Header size is not correctly calculated
Bug 1752 - RadvdInterface m_defaultLifeTime is set to milliseconds instead of seconds
Bug 1753 - Halting Issue with DistributedSimulatorImpl
Bug 1754 - Missing GIL lock in generated callback destructor

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.17

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.17.tar.bz2

Supported platforms

These platforms have been tested; others may work also:

Fedora Core 18 (32/64 bit) with g++-4.7.2
Fedora Core 17 (32/64 bit) with g++-4.7.0
Ubuntu 13.04 (32/64 bit) with g++-4.7.3
Ubuntu 12.10 (32/64 bit) with g++-4.6.3
Ubuntu 12.04 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mountain Lion 10.8.3 with g++-4.2.1
FreeBSD 9.1-RELEASE (64 bit) with g++-4.2.1

New user-visible features

new TCP Westwood and Westwood+ models
new FdNetDevice model and associated helpers. The FdNetDevice is able to read and write from a file descriptor. Various helpers are provided to associate this descriptor with underlying devices or sockets on the host operating system, including a packet socket for emulation, and tap devices including a version specialized for use on PlanetLab.
ns-3-click: it's now possible to (i) have Click pull random numbers from ns-3 and (ii) have ns-3 set "defines" in Click via the simulation file (see src/click/examples/nsclick-defines.cc).
Waf shipped with ns-3 has been upgraded to version 1.7.10 and custom pkg-config generator has been replaced by Waf's builtin tool.
create-module.py script has been updated to work with waf 1.7 and support for creating modules with names containing dashes has been added.
the M5 release of the LTE module by the LENA project has been merged; please see src/lte/RELEASE_NOTES for more detailed info

Bugs fixed

bug 1256 - Unnecessary SND.NXT advance, missing ACK for Out of Order segments
bug 1318 - Ipv6L3Protocol::LocalDeliver can get stuck in an infinite loop
bug 1409 - Add an attribute "SystemId" to configure the ID for MPI
bug 1421 - Frequency dependent propagation loss models need uniform Frequency / Lambda attribute
bug 1434 - DSR throughput not comparable to other protocols for manet example
bug 1502 - Shutdown on tcp socket seems to misbehave
bug 1503 - BlockAckManager infine loop
bug 1517 - Waf clean/distclean doesn't remove the doc/html directory
bug 1540 - Waf not finding click libraries
bug 1549 - Test for NS_LOG
bug 1556 - Uses of htonl making OpenFlow's match field error
bug 1563 - Reduce valgrind test scope
bug 1564 - Packet meta data isn't shown in dumbbell-animation.xml
bug 1566 - WiFi SNR tag improvements
bug 1568 - Deserialized addresses are implicitly marked as Mac48Address
bug 1569 - droptail_vs_red example doesn't run
bug 1570 - Valgrind errors in new test examples
bug 1574 - Node color overwritten, by mobility updates in netanim
bug 1575 - Invert the y-axis in netanim
bug 1576 - Frequency units HERTZ and MEGAHERTZ mix up
bug 1577 - Typo in ascii picture in example aodv script
bug 1579 - edca-txop-n fragmentation causes segfault
bug 1582 - IPv6 raw socket return value is not like Linux socket
bug 1585 - Length field of A-MSDU subframe header endianness
bug 1586 - Building documentation fails if make runs in parallel
bug 1588 - UdpEchoServer::HandleRead logs fail when using Ipv6
bug 1589 - Bake - support pre-2.7 version of python
bug 1590 - Bake - more autotools version support
bug 1595 - Function declarations without implementations cause problems with dsr module's python bindings
bug 1596 - Inet TopologyReader is skipping one link and duplicating another one
bug 1600 - Icmpv6OptionLinkLayerAddress can only carry 48 bit addresses correctly
bug 1601 - RttEstimator doesn't set the m_currentEstimatedRtt to m_initialEstimatedRtt on creation
bug 1602 - waf build can break due to file collisions in higher-level directory
bug 1603 - random-variable-stream-helper - this unavalable for static member functions
bug 1607 - OnOffApplication over TCP with IPv6 support
bug 1608 - DSR Network ACK is not handled correctly
bug 1609 - Route Request table is needed
bug 1612 - pyviz (visualizer) will not be installed
bug 1613 - Can't build ns-3-dev with g++ 4.7.2
bug 1615 - Adjusting OLSR HelloInterval Attribute results in no links
bug 1618 - bake.py not detecting install of libxml2-dev on ubuntu
bug 1623 - pybindgen rev809 is not able to build after Ubuntu 1210
bug 1625 - ns-3-dev fails to build on Debian wheezy amd64
bug 1626 - ipv6-only network can't use UDP or TCP
bug 1632 - Prepend bake build directory to the guessed locations that waf will look to find libraries
bug 1633 - Bake - should not report that it is downloading qt4 when it is already installed
bug 1635 - Small bug without Simulator::Destroy()
bug 1636 - Compilation error flagged as unmet dependency
bug 1637 - Bake calling apt-get for unprivileged user
bug 1639 - bake.py support for linux mint
bug 1640 - bake needs to test for g++
bug 1641 - bake reports autotools dependency, but needs automake
bug 1661 - Variable ub1 defined but not used in ipv6-address.cc

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.16

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.16.tar.bz2

Supported platforms

Fedora Core 17 (32/64 bit) with g++-4.7.0
Fedora Core 15 (64 bit) with g++-4.6.3
Ubuntu 12.10 (32/64 bit) with g++-4.6.3
Ubuntu 12.04 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mountain Lion 10.8.3 with g++-4.2.1
FreeBSD 8.2 (32 bit) with g++-4.2.1
Cygwin 1.7.9-1 with g++-4.5.3

New user-visible features

Support several new LTE MAC schedulers developed in GSoC 2012 project. Those schedulers include FD-MT, TD-MT, TTA, FD-BET, TD-BET, FD-TBFQ, TD-TBFQ, PSS. Here, FD and TD mean frequency domain and time domain respectively.
It's now possible to use distcc when building ns-3 by using $ CXX='distcc g++' ./waf configure $ ./waf build
Support topology generation with the (external) BRITE topology generation tool

Bugs fixed

bug 555 - DCF immediate access
bug 976 - wifi-wired-bridging regression test fails because of rounding errors in mobility model
bug 1055: Wrong UAN's Thorp absorption loss model formula
bug 1284 - ./test.py performance tests do not exist
bug 1324 - ns3tcp-cwnd-test-suite.cc test failing
bug 1340 - ns3tcp-loss-suite.cc tests failing
bug 1342 - ns3tcp-cwnd-test-suite.cc tests failing
bug 1345 - ns-3 builds with clang compiler >= 3.0
bug 1359 - TCP cannot receive ICMP
bug 1361 - Set TOS from Application level (sockets)
bug 1463 - ./test.py --example should automatically detect the path
bug 1479 - When the Ipv4RawSocket "IpHeaderInclude" Attribute set true, Ip Checksum error
bug 1485 - Setting global properties in config file (raw text) does not have any effect
bug 1493 - test.py --list should show the test type default tip
bug 1493 - test.py --list should show the test type
bug 1494 - test.py --constrain doesn't work
bug 1495 - test.py claims test passed when no test was run
bug 1506: TCP data segment piggybacking acknowledgment
bug 1509 - RttEstimator returns invalid value in presence of errors
bug 1516 - GtkConfigStore does not show read-only attributes
bug 1520 - Config paths not fully documented (partial fix)
bug 1524 - Fragmentation Threshold equals to Packet Size at MAC Layer (Data + IP + UDP) crash the reception
bug 1525 - Linker error with mpi on Mac 10.8
bug 1526: Wrong calculation of pathloss within UanPropModelThorp::GetPathLossDb
bug 1527 - Ipv4RawSocket's BindToNetDevice not working
bug 1528 - BindToNetDevice not working for IPv6 sockets
bug 1531 - Crash when using NS_LOG in destructors of static objects
bug 1532 - unimplemented LTE Scheduler methods

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.15

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.15.tar.bz2

Supported platforms

Fedora Core 17 (32/64 bit) with g++-4.7.0
Fedora Core 15 (64 bit) with g++-4.6.3
Ubuntu 12.04 (32/64 bit) with g++-4.6.3
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Mountain Lion 10.7.4 with g++-4.2.1
OS X Snow Leopard 10.6.8 with g++-4.2.1
FreeBSD 8.2 (32 bit) with g++-4.2.1
Cygwin 1.7.9-1 with g++-4.5.3

New user-visible features

A new random variable base class called RandomVariableStream, has been introduced. This base class derives from ns3::Object, unlike the current RandomVariable class which is a special type of object in the ns-3 system to date. By making this class derive from ns3::Object, it can be handled with the Ptr class, can carry attributes, and can have its parameters and initial state saved in the config-store subsystem. A new attribute called Stream has been introduced for this class, to allow users to better control the assignment of underlying pseudo-random sequences to the RandomVariableStream objects (bug 101).

Bugs fixed

bug 101 - random variable initialization
bug 1256 - Unnecessary SND.NXT advance, missing ACK for Out of Order segments
bug 1308 - Nix-vector; do not process packets to self
bug 1386 - assert if PositionAllocator not provided to RandomWaypointMobilityModel
bug 1399 - TCP not backing off retransmissions properly
bug 1441 - IPv4 header length handling
bug 1464 - ConfigStore Save + Load => Could not set default value for ns3::UdpSocketImpl::IcmpCallback
bug 1470 - define default parameter for constructor in .h file
bug 1473 - GetQueue/SetQueue missing from Csma python bindings
bug 1475 - test.py --list should sort the output
bug 1476 - TestCase::GetName () should not be private
bug 1477 - Click doesn't work with raw sockets
bug 1481 - Openflow example doesn't run
bug 1486 - Segfaults in nix-vector-routing with bridges
bug 1489 - Jakes Log component is missing
fixed bug with multiple LCs in UL BSR
fixed bug with lena-dual-stripe crashes with --homeUesHomeEnbRatio=2

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.14.1

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.14.1.tar.bz2

Bugs fixed

This hotfix release contains a fix for the PyViz visualizer and makes it easier to add PyViz support to examples; otherwise it is the same as the ns-3.14 release.

Release 3.14

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.14.tar.bz2

Supported platforms

ns-3.14 has been tested on the following platforms. Not all features are available on all platforms; check the Installation page on the project wiki.

Fedora Core 17 (32/64 bit) with g++-4.7.0
Fedora Core 16 (32/64 bit) with g++-4.6.3
Fedora Core 15 (64 bit) with g++-4.6.3
Ubuntu 12.04 (32/64 bit) with g++-4.6.3
Ubuntu 11.10 (32 bit) with g++-4.6.1
Ubuntu 10.04.4 LTS (64 bit) with g++-4.4.3
OS X Lion 10.7.4 with g++-4.2.1
OS X Snow Leopard 10.6.8 with g++-4.2.1
FreeBSD 8.2 (32 bit) with g++-4.2.1
Cygwin 1.7.9-1 with g++-4.5.3

New user-visible features

Transport protocol implementations (TCP, UDP) have been refactored to support also IPv6 connections. Dual-stacked IPv6 sockets are implemented. An IPv6 socket can accept an IPv4 connection, returning the sender's address as an IPv4-mapped address (IPV6_V6ONLY socket option is not implemented).
The LTE code from the LENA project has been merged, bringing in a significant redesign of the LTE module as well as many new features.
An antenna module is now included, which includes different radiation pattern models. See the corresponding new section of the ns-3 models library documentation for details.
A new buildings module is introduced which allows to model the presence of buildings in a wireless network topology.
New propagation models (OkumuraHata, ITU-R P.1411, ITU-R P.1238) have been added
The Dynamic Source Routing (DSR) MANET routing protocol for IPv4 was added.
A Random Early Detection (RED) queue model has been added.
Ipv6RoutingHelper is now in-line with Ipv4RoutingHelper concerning the RT print functions. Various minor changes were made in Ipv6RoutingProtocol and derived classes to make this possible.
New "SendIcmpv6Redirect" attribute (and getter/setter functions) to Ipv6L3Protocol. The behavior is similar to Linux's conf "send_redirects", i.e., enable/disable the ICMPv6 Redirect sending.
Longer and more descriptive names are used for error units in RateErrorModel class and queue mode in Queue class. Attributes in those classes are also changed for consistency. See API documentation for details.
The netanim animator is now bundled with the release.

Bugs fixed

bug 603 - Simulator::Next is useless
bug 631 - RealtimeSimulatorImpl does not handle Ctrl-C with python bindings
bug 962 - list of paths to reach objects contains bogus entries
bug 1000 - Make RealtimeSimulatorImpl last until stop
bug 1053 - Need better error diagnostics in ns2-mobility-trace example
bug 1109 - Point out the effects of ArpCache::PendingQueueSize
bug 1179 - Add LTE trace hooks for supporting visualizer
bug 1180 - LTE: Add TX/RX trace support
bug 1273 - Better error message on missing Python development files
bug 1282 - Sleep state and CCA
bug 1283 - PacketSocket::SendTo should return number of bytes
bug 1302 - Flow monitor bug
bug 1304 - Tag information changed after transmission
bug 1313 - Stddev (average.h) returning NaN
bug 1318 - Asserts for IPv6 malformed packets
bug 1319 - Fix Ipv6RawSocketImpl Icmpv6 filter
bug 1325 - Python examples get valgrind errors when build subdirectories are specified in waf
bug 1339 - test.py uses the old name for the test runner
bug 1348 - python bindings: deprecated conversion from string constant to 'char*'
bug 1349 - TypeId.LookupAttributeByName Python bindings missing
bug 1350 - Simulator.ScheduleWithContext Python binding missing
bug 1351 and 1333 - TCP not able to take RTT samples on long delay network
bug 1352 - Fixed MapAttributes, previously was mapped to a vector in ObjectPtrContainer and (and key information was dropped). Now the container is a map.
bug 1354 - Building scratch subdir programs is broken
bug 1355 - Visualizer dependencies not detected at buildtime
bug 1357 - IPv6 fragmentation fails due to checks about malformed extensions
bug 1362 - ICMPv6 does not forward ICMPs to upper layers (and minor fixes to ICMPv6)
bug 1376 - wrong wind variable's name
bug 1378 - UdpEchoClient::SetFill () does not set packet size correctly
bug 1379 - lte-multiple-flows example crashes
bug 1380 - lte-phy-uplink example crashes
bug 1391 - .ns3rc does not allow comments as expected
bug 1392 - Modules built report does not clarify C++ or Python
bug 1393 - IPv6 Routing Helper RT Print functions
bug 1395 - AODV DeferredRouteOutputTag missing constructor
bug 1396 - ARP with hardware addresses longer than 6 bytes
bug 1399 - TCP not backing off retransmissions properly
bug 1404 - Bound user input in tutorial third.cc program
bug 1406 - waf exits with maximum recursion depth exceeded
bug 1415 - examples-to-run.py doesn't work with command line arguments
bug 1420 - no python bindings for csma-layout
bug 1441 - IPv4 header length handling

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.13

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.13.tar.bz2

Supported platforms

ns-3.13 has been tested on the following platforms. Not all features are available on all platforms; check the Installation page on the project wiki.

Ubuntu 11.10 (32 bit) with g++-4.5.2
Ubuntu 11.04 (32/64 bit) with g++-4.5.2
Ubuntu 10.04.3 LTS (64 bit) with g++-4.4.3, g++-3.4.6
OS X Lion with g++-4.2.1
OS X Snow Leopard with g++-4.2.1
Fedora Core 16 (32/64 bit) with g++-4.6.2
- however, g++-3.4.6 fails on Fedora 16 i686
Fedora Core 14 (64 bit) with g++-4.5.1
FreeBSD 9.0-RC1 (AMD64) with g++-4.2.1

New user-visible features

IPv6 address generator with support for duplicate address detection

Bugs fixed

bug 962 - list of paths to reach objects contains bogus entries
bug 1001 - Buffer::CopyData() doesn't return the number of bytes copied
bug 1010 - Uan model sleep patch
bug 1020 - Wrong usage of the originator sequence number in HWMP PREP
bug 1021 - Beacon collision avoidance in Mesh module works incorrectly
bug 1039 - Nagle's algorithm in TCP
bug 1055 - Wrong UAN's Thorp absorption loss model formula
bug 1059 - Unable to load trace files created from SUMO and TraNS Lite
bug 1112 - Advance m_nextTxSequence upon retransmit after RTO
bug 1137 - mpi module is hard-coded for openmpi
bug 1166 - IPV4 TCP failed to send a RST when connect arrives before listen
bug 1186 - Ipv4Header lacks DSCP and ECN
bug 1204 - Can't Parse Time +100000000.0ns
bug 1219 - Coding style of ns2-mobility-helper-test-suite.cc is fixed
bug 1257 - waf install __init__ Python files even with --disable-python
bug 1263 - waf configure fails on FreeBSD 9.0-BETA2 amd64
bug 1266 - gdb cannot be loaded
bug 1227 - Spurious RTO due to low min RTO
bug 1229 - Multiplication overflow in WaypointMobilityModel::EndMobility
bug 1242 - m_lastRtt in tcp-socket-base.cc not implemented
bug 1256 - TCP unnecessary snd.nxt advance
bug 1265 - Make ns-3 directory "movable"
bug 1269 - sqlite3 not found on FreeBSD
bug 1270 - "Checking boost includes" weirdness
bug 1278 - Ipv4ClickRouting::HandleScheduleFromClick bug
bug 1281 - Checksum not calculated when doing IP fragmentation
bug 1285 - IPv6 Localhost is marked as GLOBAL instead of HOST
bug 1290 - buffer-test.cc gets a valgrind error
bug 1295 - Missing const qualifiers in TopologyRead
bug 1299 - EnableAsciiIpv4All tracing doesn't show transmitted/recvd packets
bug 1300 - HalfDuplexIdealPhy notify SpectrumInterference of AbortRx
bug 1301 - Ns2MobilityHelper causes Node GetPosition() to return NaN
bug 1305 - do not list modules built upon exiting waf shell
bug 1312: TopologyRead Assert condition fix
IPv4 packets double fragmentation was broken
Fix wifi-clear-channel-cmu.cc example
NetAnim: fix for bcast packet reuse
Missing PropagationLossModel.CalcRxPower in Python bindings
Corrected compilation behavior in Ubuntu 11.10 due to ldd behavior change
Added required PTHREAD dependency to RT library check.

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.12.1

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.12.1.tar.bz2

Bugs fixed

This release fixes PyViz visualizer's python bindings; otherwise, it is the same as the ns-3.12 release.

Release 3.12

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.12.tar.bz2

Supported platforms

ns-3.12 has been tested on the following platforms. Not all features are available on all platforms; check the Installation page on the project wiki.

Fedora Core 15 (32/64 bit) with g++-4.6.0
Ubuntu 11.04 (32/64 bit) with g++-4.5.2
OS X Lion with g++-4.2.1
Fedora Core 14 (64 bit) with g++-4.3.4, g++-4.5.3, g++-4.4.6
Fedora Core 12 (64 bit) with g++-4.4.4
OS X Snow Leopard with g++-4.2.1
Ubuntu 10.04.3 LTS (64 bit) with g++-4.4.3, g++-3.4.6

New user-visible features

SpectrumChannel models now support the usage of single-frequency propagation loss models based on the PropagationLossModel class. These model can be used in conjunction with the frequency-dependent propagation loss model based on the SpectrumPropagationLossModel class already supported by SpectrumChannel.
Extend the attribute system extend the attribute system to store map container objects in addition to vector containers. The ObjectMap and related classes are patterned after ObjectVector.
Support for IPv4 fragmentation has been added.
Significant performance improvement for AODV in dense mobile scenarios due to a fixed bug in RERR processing.
WiFi traces that were named promiscuous are now renamed monitor, and a separate flag for setting the interface to promiscuous mode has been introduced. This disambiguates monitor mode from promiscuous mode.
Monolithic Python bindings have been removed

Bugs fixed

bug 845 - fix ConfigStore output for changing default values
bug 1010 - Uan model Sleep patch
bug 1033 - Mesh airtime-metric fixed
bug 1043 - lte-spectrum-value-helper.cc file swapped uplink/downlink freq.
bug 1050 - ISO C++ forbids variable length array; remove all instances
bug 1057 - LTE bearers differentiation issue
bug 1082 - Check that log component names are correct when taken from NS_LOG
bug 1100 - IPv6 fragmentation enhancements
bug 1102 - IPv4 header fragment offset field not set correctly
bug 1123 - class MinMaxAvgTotalCalculator does not implement all methods
bug 1134 - Fix LiIonEnergySource attribute spelling for InitialCellVoltage
bug 1139 - Broadcast packets issue in uan cw mac
bug 1141 - MeshWifiInterfaceMac adds supported modes to wrong remote station
bug 1163 - Ipv4EndPointDemux::AllocateEphemeralPort forget to increment port
bug 1164 - IPV4 TCP Bind already used port failed, but without setting errno
bug 1168 - BridgeNetDevice: default expiration time not realistic
bug 1174 - Ns-3 does not generate static libraries
bug 1175 - shared libraries are not versioned
bug 1193 - AODV Hello timers scheduling skewed when RREP, RREQ are processed
bug 1194 - AODV Incorrect RERR processing
bug 1201 - UDP sockets need to set connected state before notifying the ConnectionSucceeded callback
bug 1208 - Spectrum module example causing valgrind errors
bug 1209 - ns-3-click fails to build on Fedora 15 when tests are enabled
bug 1220 - FdReader always stops with NS_FATAL_ERROR
bug 1222 - Incomplete PointToPointNetDevice Python bindings
bug 1224 - ns-3-allinone fails to compile on OS X Lion
bug 1226 - Incomplete YansWifiChannel Python bindings
bug 1234 - GetAttributeChecker is not defined anymore but still used
bug 1239 - Add assertion that reference count never overflows
bug 1244 - Seg Faults in optimized builds due to missing Logging components
Fix ARP issue in nsclick-ip-router.click and static route in nsclick-routing-node2.click

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.11

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.11.tar.bz2

Supported platforms

ns-3.11 has been tested on the following platforms. Not all features are available on all platforms; check the Installation page on the project wiki.

Linux x86_64 Ubuntu 11.04
- g++-4.5.2
Linux i686 Ubuntu 11.04
- g++-4.5.2, g++-4.4.5
Linux x86_64 Fedora Core 15
- g++-4.6.0
Linux x86_64 Fedora Core 14
- g++-4.5.3, g++-4.4.6, g++-4.3.4
Linux x86_64 Fedora Core 10
- g++-3.4.6, 4.0.4, 4.1.2, 4.2.4, 4.3.2, 4.4.0
OS X Snow Leopard
- g++-4.2.1

New user-visible features

The build system has been modularized, and the source code reorganized, to allow for modular libraries instead of a single monolithic ns-3 library. User programs now link a number of smaller, per-module libraries depending on the dependencies expressed to the build system. Source code is now being maintained in individual modules with consistent directory structures.
Python bindings have also been modularized, and the bindings are now generated into a 'ns' namespace instead of 'ns3' for the old (monolithic) bindings. By default the bindings are now modular, with a backward compatibility layer for older programs.
By default, example and test programs are disabled from the build. Users can enable them via the use of a waf command at configure time, or automatically through the use of a new .ns3rc file.
int64x64_t is a new type which allows portable and easy to write arithmetic calculations that require a high degree of fractional precision.
An interface to the Click Modular Router and an Ipv4ClickRouting class has been added, to allow a node to use Click for external routing.
An interface to an OpenFlow software implementation distribution has been added to allow the simulation of OpenFlow switches in ns-3.
ns-3 coding style requirements have been applied to the entire coding base, resulting in a large number of whitespace changes. The coding style has been automatically enforced by running a style checking program (utils/check-style.py) that uses the uncrustify (v. 0.58) program to apply changes.
Some documentation reorganization to split documentation between the ns-3 manual (primarily focusing on the ns-3 core) and a new "model library" document has been started.

Bugs fixed

The following lists many of the bugs fixed or small feature additions since ns-3.10, in many cases referencing the Bugzilla bug number.

bugfix: CsmaNetDevice ErrorModel not discarding packet
bugfix: do not call RouteOutput() twice
Workaround gccxml bug scanning Seconds(0) as default value
Copy a bug fix from ns3modulescan.py into ns3modulescan-modular.py
Modular Python bindings work (many bug fixes, more modules tested)
Modular bindings: bug fixes, more verbose scanning
./waf --apiscan: fix bug in detection of whether the per-module
Remove the 'Modules to build' debug print
CsmaNetDevice ReceiveErrorModel was not dropping the packet
Several "set but not used" bugs for newer compilers quick-fixed
bug 445 - Is the class name Scalar in nstime.h appropriate?
bug 699 - TestCase::DoRun probably should not return a bool
bug 823 - Need finer-grained control over what goes into libns3
bug 957 - Issue with test.py
bug 1017 - node --> internet-stack --> node
bug 1018 - mobility --> helper --> mobility circular dependency
bug 1019 - common --> node --> common circular dependency
bug 1038 - Time::Get*Seconds () return signed integer while actually returning unsigned.
bug 1040 - Olsr and multiple interfaces
bug 1042 - AODV RERR implosion (missing RERR_RATELIMIT)
bug 1044 - Seconds (1e-9) creates Time that is not IsPositive ()
bug 1047 - Multicast routes on nodes with >16 interfaces
bug 1048 - suggested MatrixPropagationLossModel::SetLoss() API change
bug 1049 - Issues with OLSR HNA messages sent by multiple gateways
bug 1052 - olsr::RoutingProtocol::LinkTupleUpdated incorrect detection of asymmetric link with multiple interface nodes
bug 1054 - ipv6 InternetStackHelper EnablePcapIpv6All() broken
bug 1056 - CSMA: padding not handled correctly for LLC encapsulation
bug 1058 - InternetStackHelper pitfall: calling Install before adding routing protocols
bug 1060 - Setting NqStaWifiMac Active Probing true, crashes simulation
bug 1061 - Title level inconsistent in click.rst
bug 1062 - rescale-pdf not working
bug 1064 - Correct Friis propagation loss equation in spectrum module
bug 1066 - Set Radiotap modulation type flags correctly
bug 1069 - ApWifiMac unduly calls RegularWifiMac::Receive and crashes
bug 1070 - csma/ipv6 examples duplicate NS_LOG_COMPONENT_DEFINE
bug 1072 - crash upon call to Packet::AddAtEnd of fragmented packets
bug 1075 - Python examples fail when static built is enabled
bug 1076 - Waf gives an error if you enable only a single module
bug 1078 - PacketTagList::Add performs NS_ASSERT counting one byte too few
bug 1079 - MPI code doesn't compile
bug 1081 - wutils.py refers to the old directory for visualizer module
bug 1083 - scratch doesn't work when only some modules are enabled
bug 1085 - Build failed: list index out of range
bug 1086 - sanity check for not calling Object::Dispose () twice
bug 1087 - Call MPI_Finalize to exit MPI environment
bug 1088 - Code in scratch directory assumes all modules are enabled
bug 1089 - lwip build issue
bug 1090 - WifiMacQueue is not accessible through the attribute path
bug 1092 - Problem building FreeBSD stack with g++ 4.5.2 (Ubuntu)
bug 1094 - Object::GetObject upon dlopen
bug 1097 - AODV routing entry set to be VALID mistakenly.
bug 1098 - when to show users which modules are enabled?
bug 1101 - Sqlite stats disappeared from configuration file src/wscript
bug 1103 - Useless assignment in omnet-data-output.cc
bug 1105 - Move topology helpers into separate per-device modules
bug 1106 - Remove "CanvasLocation" dependencies in p2p helpers
bug 1108 - test.py -e option needs repair
bug 1110 - Sort alphabetically and display "Modules built" in columns
bug 1117 - bindings failures on selected platforms
bug 1122 - spectrum-value test should check tolerance on a per-value basis
bug 1125 - ./waf --enable-modules fails
bug 1131 - Bug in Ipv4L3Protocol::RemoveAddress()
bug 1133 - DSDV: Possible bug in settling time calc
bug 1142 - Wrong 802.11p Slot time
bug 1146 - help string for test.py with disabled tests

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Release 3.10

Availability

This release is available from: http://www.nsnam.org/release/ns-allinone-3.10.tar.bz2

Supported platforms

ns-3.10 has been tested on the following platforms. Not all features are available on all platforms; check the Installation page on the project wiki.

Linux i686 Ubuntu 10.10
- g++-4.4.5
Linux x86_64 Ubuntu 8.04.4
- g++-3.4.6, g++-4.2.4
Linux x86_64 Fedora Core 12
- g++-4.4.4
Linux x86_64 Fedora Core 10
- g++-3.4.6, 4.0.4, 4.1.2, 4.2.4, 4.3.4, 4.4.0
OS X Snow Leopard
- g++-4.2.1
OS X powerpc Leopard
- g++-4.0, g++-4.2

New user-visible features

NS-3 PyViz, a live simulation visualizer, has been added. The visualizer interacts with a running simulation, such that it uses no trace files. It can be most useful for debugging purposes, i.e. to figure out if mobility models are what you expect, where packets are being dropped, etc. There is also a builtin interactive python console that can be used to debug the state of the running objects. Although it is mostly written in Python, it works both with Python and pure C++ simulations.
Wi-Fi MAC high classes have been reorganised in attempt to consolidate shared functionality into a single class. This new class is RegularWifiMac, and it derives from the abstract WifiMac, and is parent of AdhocWifiMac, StaWifiMac, ApWifiMac, and MeshWifiInterfaceMac. The QoS and non-QoS class variants are no longer, with a RegularWifiMac attribute "QosSupported" allowing selection between these two modes of operation.
Support for IEEE 802.11g (specifically, rates with Modulation Class ERP-OFDM) has been added to the wifi module. The new WifiModes have names of the form ErpOfdmRatexxMbps, where xx is the rate in Mbps (one of 6, 9, 12, 18, 24, 36, 48, 54), and a WifiPhyStandard enumeration WIFI_PHY_STANDARD_80211g has been added to allow configuration of a Wi-Fi STA supporting ERP-OFDM, HR/DSSS, and DSSS rates (which some call an "802.11b/g" station).
Two attributes were added to WaypointMobilityModel. The first "LazyNotify" (default false), if enabled to true, will suppress course change notifications if there are no position updates. The second, "InitialPositionIsWaypoint" (default false), if enabled, will allow an initial call to SetPosition () (before any waypoints have been added) to be treated as the first waypoint.
Regression testing is now completely performed within test.py rather than a separate "./waf --regression" that consults reference traces in the ns-3.x-ref-traces directory. In most cases, the example programs whose traces were included in ns-3.x-ref-traces have a corresponding test called from the test.py program. It is still possible to write trace-based regression tests but they are now called from the test.py program.
New BulkSendApplication sends data as fast as possible up to MaxBytes or unlimited if MaxBytes is zero. Think OnOff, but without the "off" and without the variable data rate. This application only works with SOCK_STREAM and SOCK_SEQPACKET sockets, for example TCP sockets and not UDP sockets.
Extensions to the energy models: 1) a new Rakhmatov Vrudhula non-linear battery model, 2) additional support for modeling energy consumption in WiFi devices, 3) an example for how to add energy models to a WiFi-based simulation (in examples/energy/ directory).
New methods to print IPv4 routing tables to an output stream.
A replacement implementation for TCP for IPv4. TcpSocketBase now replaces TcpSocketImpl. There are subclasses defined for TCP Tahoe, Reno, NewReno, and the original RFC793 without congestion control.
Energy support for UAN module and Li-Ion energy model. Now each network node can have an associated energy source from which it consumes energy. The user can specify a custom energy model for the underwater transducer, with default values set for WHOI acoustic transducer. Li-Ion battery model added into energy models folder.
Destination-Sequenced Distance Vector (DSDV) routing protocol is a proactive, table-driven routing protocol for MANETs developed by Charles E. Perkins and Pravin Bhagwat in 1994. This implementation is for IPv4 routing and was contributed by ResilNets Research Group.
A novel model to simulate LTE networks has been added. It focuses mainly on modeling the E-UTRA part of the system, with a particular attention on the aspects related to the channel, PHY and MAC layers. The most important features available at this moment are (i) a basic implementation of both the UE and the eNB devices, (ii) RRC and entities for both the UE and the eNB, (iii) an Adaptive Modulation and Coding (AMC) scheme for the downlink, (iv) the management of the data radio bearers (with their QoS parameters), the MAC queues and the RLC instances, (v) Channel Quality Indicator (CQI) management, (vi) support for both uplink and downlik packet scheduling, (vii) a PHY layer model with Resource Block level granularity, and (viii) a channel model with the outdoor E-UTRAN propagation loss model.
Project documentation has been converted from GNU Texinfo to Sphinx.

Bugs fixed

The following lists many of the bugs fixed or small feature additions since ns-3.9, in many cases referencing the Bugzilla bug number

bug 824 - TCP should implement FastRecovery by default
bug 852 - Add support for 802.11g devices
bug 892 - WaypointMobilityModel incompatible with MobilityHelper::Install
bug 893 - Lazy CourseChange notification for WaypointMobilityModel
bug 903 - TapBridge does not shut down properly
bug 953 - WiMAX channel scanning overflow
bug 967 - Need to decouple Ipv4L4Protocols from Ipv4L3Protocol
bug 978 - Consolidate Wi-Fi MAC high functionality
bug 979 - Multi-octet fields in Wi-Fi headers have wrong endianness
bug 981 - use a cache to keep track of received MPDUs under block ack
bug 983 - handle correctly ADDBA response action frames in QadhocWifiMac
bug 984 - EmuNetDevice should use DIX encapsulation by default
bug 985 - WiMAX Invalid management message type on wimax-simple
bug 988 - MacRxMiddle::SequenceControlSmaller method
bug 990 - Error with an NS_ASSERT at uan-phy-gen.cc
bug 991 - InterferenceHelper assertion failure
bug 992 - Unusual (possibly incorrect assertion) in Packet::Deserialize
bug 993 - MinstrelWifiManager::UpdateStats useless if clause
bug 994 - PointToPointGridHelper useless if clauses
bug 995 - Useless (possibly incorrect) comparison of unsigned int
bug 1004 - module header not rebuilt
bug 1005 - GetSocket() methods for OnOffApplication and PacketSink
bug 1009 - decouple m_finSequence (TcpSocketImpl) from tx sequence numbers
bug 1012 - UAN Throp propagation model bug
bug 1015 - GetChannelFrequencyMhz() does not match with standard
bug 1022 - inappropriate ASSERT in tcp-socket-impl.cc
bug 1025 - wimax-ipv4 script exists with signal SIGSEGV when nbSS>20
bug 1027 - RocketfuelTopologyReader is not working at all
bug 1029 - v4Ping application endian issues
bug 1030 - routing/aodv example fixed
bug 1031 - Wifi hidden terminal example does not work
bug 1032 - Unable to specify multiple Compiler/Linker flags

Known issues

In general, known issues are tracked on the project tracker available at http://www.nsnam.org/bugzilla/

Windows XP 32 bit Cygwin 1.7.7 does not seem to work because of a problem (reported elsewhere) in linking large libraries.

Release 3.9

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.9.tar.bz2

Supported platforms

ns-3.9 has been tested on the following platforms:

Ubuntu 10.04 LTS 32/64-bit gcc-4.4.3
Fedora Core 12 64-bit gcc-4.4.3
Ubuntu 9.10 32-bit gcc-4.4.1
Ubuntu 8.04 LTS 64-bit gcc-4.2.4
Fedora Core 5 32-bit gcc-4.1.1
Mac OS X Leopard powerpc gcc-4.0.1
Windows Cygwin 1.7.5

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

A reorganisation of the construction of Wi-Fi transmit rates has been undertaken with the aim of simplifying the task of supporting further IEEE 802.11 PHYs. This work has been completed under the auspices of Bug 871. A consequence of this work is that WifiModes have a new (hopefully future-proof) naming, and simulations which specify rates by name will need updating. The list of new rate names is given in the error message produced when an attempt is made to use any invalid rate name (including those that were previously valid).
A new OFDM error rate model for WiFi (NistErrorRateModel); this model has been validated in clear-channel testbed tests. For 802.11b, it uses the same underlying model as the YansErrorRateModel, but it differs from YansErrorRateModel for OFDM modes (802.11a/g). The default YansWifiPhyHelper has been changed to use this model.
A new NS-2 mobility trace reader supports BonnMotion, SUMO, TraNS, etc. traces.
An energy model for nodes and devices, including an energy source model and device energy models allowing energy-aware devices to notify the energy source about energy consumption.
Rocketfuel topology dataset support for existing topology reader Rocketfuel project: http://www.cs.washington.edu/research/networking/rocketfuel/
Underwater Acoustic Network (UAN) model, split in to three parts, the channel, PHY, and MAC models to enable researchers to model a variety of underwater network scenarios.
the Spectrum framework, which provides support for spectrum-aware Channel and PHY layer modeling. It features a set of classes that allows the mathematical representation of frequency dependent phenomena. Some example channel, propagation and device implementations that make use of this framework are also included.

Bugs fixed

The following lists many of the bugs fixed or small feature additions since ns-3.8, in many cases referencing the Bugzilla bug number

IPv4 global routing code; stub networks were assumed to be /24 and added as /24 networks even if the mask is actually different
OLSR was generating messages on non-OLSR interfaces
ICMPv4 objects not properly registered; affected serialization code
bug 231 - SocketAddressTag needs to be removed from a packet before forwarding the packet to the user
bug 385 - Add a generic "sequence number" class
bug 473 - [PATCH] Alternative ns-2 trace reader
bug 665 - Need Tutorial Sectino on Config Path and Tracing Use
bug 671 - add packet-info-tag.cc for IP_PKTINFO/IPV6_PKTINFO
bug 702 - Global routing doesn't respond to interface events
bug 799 - Interference helper is too slow
bug 800 - Erroneous packet sender while using aloha or cw mac in uan module
bug 802 - Minstrel algorithm causes segmentation fault
bug 826 - Using uint64_t instead of Time in DcfManager
bug 828 - PacketSocket::Close does not unregister protocol handler
bug 842 - ns-3-dev crashes using block acks
bug 843 - Most wifi examples change BeaconInterval to unrealistic values
bug 844 - YansWifiPhy::GetPowerDbm off-by-one problem when calculating Tx power
bug 846 - packet.cc triggers deprecated warning
bug 853 - Rates for Wi-Fi control responses are incorrectly selected
bug 854 - Support DROP_QUEUE reason-code in Ipv4FlowProbe
bug 858 - support MSG_PEEK in IPv4/IPv6 raw socket
bug 861 - Forwarding drops (due to no route found) were not being logged in IPv4 or IPv6 ascii traces
bug 869 - suggested test framework enhancements
bug 871 - naming for WifiPhyStandard
bug 873 - Queue occupancy counter not decremented in WifiMacQueue::Remove()
bug 874 - wrong modulation type is selected in the forwardBurst method
bug 875 - "frame includes FCS" flag should be set in Radiotap frame header
bug 879 - source address selection for AODV using DeferredRouteRequest
bug 881 - Reorganise to allow wider use of WifiInformationElement
bug 890 - several rate adaptation algorithms not tested by test.py
bug 900: RawTextConfigLoad::Default does not load configurations
bug 901 - Optimize Mac48Address < != and ==
bug 902 - TCP: handle out-of-order packets during connection shutdown
bug 905 - WimaxNetDevice loses packet uid, tags, and memory optimization
bug 906 - NSC TCP socket fork did not copy txbuffersize over
bug 908 - test.py should exit if waf dies
bug 910 - Change Wi-Fi "AccessClass" to something closer to the standard
bug 911 - IPv4/v6 multicast forwarding not going to all output interfaces
bug 913 - Queue Enqueue/Drop trace sources behavior unintuitive
bug 916 - EnableAsciiAll ("prefix") does not work for YansWifiPhyHelper
bug 918 - samples/main-packet-header.cc is broken
bug 919 - minstrel does not pass valgrind tests
bug 921 - Inconsistent declaration of class/struct Object in object.h
bug 922 - Inconsistent declaration of class/struct in wifi-remote-station-manager.h
bug 923 - Inconsistent declaration of class/struct in mac-low.h
bug 924 - Inconsistent declaration of class/struct in <xxx>-wifi-managers
bug 925 - Various IPv6 cc files trigger deprecated warning
bug 926 - olsr handling of multicast packets
bug 927 - SimpleOfdmWimaxChannel RxPower computation
bug 930 - examples/topology-read/topology-example-sim.cc uses variable length array
bug 931 - Abnormal exit reports SIGSEGV on failure
bug 932 - Support IP_HDRINCL option for Ipv4RawSocket
bug 933 - Flushing ostream and files on abnormal program exit (ASSERT, ABORT and FATAL_ERROR)
bug 936 - Waf build error for python bindings on "AccessClass"
bug 937 - bugs in ns-3 wimax
bug 939 - EmuNetDevice uses too much memory when reading packet bursts
bug 940 - AODV fails to set up a correct path
bug 941 - Wifi Dcf attributes not reachable through configuration namespace
bug 943 - Add a SO_BROADCAST socket option
bug 944 - change default ErrorRateModel from YansErrorRateModel to NistErrorRateModel
bug 946 - Rocketfuel topology dataset support for topology reader
bug 949 - Node::NonPromiscReceiveFromDevice reports a meaningless destination address to user callbacks
bug 950 - PointToPointNetDevice says promisc support is not implemented but it is
bug 955 - Install NSC for NS3 in a Itanium Architecture (ia64) with Linux 2.6.16.6
bug 956 - Bindings failure in core (traced-value) with older gcc
bug 958 - WiFi uses wrong default values for MTU, FragmentationThreshold and RtsCtsThreshold
bug 959 - Simulation never finishes when using RealtimeSimulatorImpl
bug 960 - V4Ping does not generate checksum
bug 961 - Problem with MPI activation
bug 964 - AODV does not work with host addressed interfaces
bug 965 - Problem building /src/core/callback.cc
bug 966 - AODV originates new RREQ on each packet, when doesn't have valid route
bug 969 - No SocketList is present in UdpL4Protocol class
bug 971 - fix AODV header Print functions
bug 972 - [flow monitor] assertion fails in pv4-flow-probe.cc

Known issues

Release 3.8

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.8.tar.bz2

Supported platforms

ns-3.8 has been tested on the following platforms:

linux x86 gcc 4.4.0, 4.3.2, 4.2, 4.1.1, 4.1 and 3.4.6 (debug and optimized)
linux x86_64 gcc 4.4.0, 4.3.2, 4.2.4, 4.2.3, 4.2.1, 4.1.3, 3.4.6 (debug and optimized)
MacOS X ppc gcc 4.0.x and 4.2.x (debug and optimized)
cygwin gcc 4.3.4 (debug and optimized)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

WiMAX net device: Allow to simulated IEEE 802.16 point to multi-point based networks
Distributed simulation for point-to-point networks using the Message Passing Interface (MPI) standard.
Matrix propagation loss model uses a two-dimensional matrix of path loss indexed by source and destination nodes.
Topology read system: Allows quick and easy creation of large topologies by reading Inet or Orbis files
Gauss-Markov mobility model: Adds 3-d adaptation of Gauss-Markov mobility model which has both memory and variability
Steady-state random waypoint mobility model: Based on random waypoint mobility (RWM) model for case when speed, pause and position are uniformly distributed random variables. However, initial values of these parameters are not from uniform distribution but from stationary distribution of RWM model.
Two-ray ground propagation loss model: Calculates the crossover distance under which Friis is used. The antenna height is set to the nodes z coordinate, but can be added to using the model parameter SetHeightAboveZ, which will affect ALL stations

API changes from ns-3.7

API changes for this release are documented in the file CHANGES.html.

Bugs fixed

The following lists many of the bugs that were fixed since ns-3.7, in many cases referencing the Bugzilla bug number

bug 155 - std::ostream & os" parameters not Python friendly
bug 184 - GtkConfigStore do not support ConfigureDefault
bug 407 - OLSR is missing HNA support
bug 414 - No ReceiveErrorModel in SimpleNetDevice
bug 602 - WifiRemoteStation lacks information about the access class of outgoing packets
bug 622 - [PATCH] Friendly names for pcap traces
bug 683 - Helper methods for pcap tracing with explicit filenames
bug 706 - Backoff counting when starting NS.
bug 720 - TapBridge creation fails from a script outside the ns3 tree
bug 731 - Send function in point-to-point-net-device fails to check the return value of the Dequeue function
bug 747 - Listening TCP socket closes on RST
bug 748 - Cloned TCP socket uses wrong source address
bug 772 - AODV is unable to correctly buffer packets waiting for route reply
bug 777 - AODV ignores specified outgoing interface in RouteOutput()
bug 778 - OLSR ignores specified outgoing interface in RouteOutput()
bug 787 - Addition of Two Ray Ground model to propagation loss model and tests
bug 788 - OLSR_NEIGH_HOLD_TIME should be 3 times OLSR_REFRESH_INTERVAL
bug 789 - [PATCH] Globalrouting externalroutes to use the new GetRootExitDirections()
bug 794 - Ipv4Mask constructor for "/yy"-notation is wrong
bug 796 - TCP bug in ns-3-dev branch : Crash detected during retesting of Chord on ns-3-dev branch
bug 797 - Enhancements to src/core/random-variable.cc/h
bug 801 - ns-3.7 and SVN not coexisting nicely
bug 802 - Minstrel algorithm causes segmentation fault
bug 804 - null-pointer references in 3.7 internet stack
bug 806 - TCP doesn't work over a CSMA link
bug 807 - ns2-mobility-helper.cc: node id parsed wrong
bug 809 - Missing Python binding for Ipv4GlobalRouting::GetRoute
bug 810 - In TCP, Socket::GetSockName() does not return the local socket address
bug 812 - Assert when getting socket in RecvReply for AODV
bug 813 - Nqos AP sends packet to non associated STA
bug 814 - Function logging causing assert in wireless examples
bug 815 - waf shell file descriptor leak
bug 816 - tap-creator deadlock when python bindings enabled
bug 817 - Pareto rng constructors using scale and shape instead of mean and shape
bug 818 - TCP Socket implementation does not set ACK flag on retransmits
bug 819 - Build break when gtk not installed
bug 820 - Bad things happen in test.py when logging is enabled
bug 821 - AODV asserts with function logging enabled
bug 822 - Move Mtu attribute from NetDevice base class to subclasses
bug 825 - UDP-Client-server's packet loss counter not properly reset
bug 828 - PacketSocket::Close does not unregister protocol handler
bug 829 - TCP unbound memory problem (pending data)
bug 833 - OnOffApplication with PacketSocket: sniffs all traffic
bug 834 - Incorrect signature of Ipv4FlowProbe::DropLogger
bug 835 - Unlimited receive queues in sockets == evil
bug 836 - Delay is incremented over time with BsUplinkSchedulerSimple and BsUplinkSchedulerRtps
bug 838 - ns-3 can't compile on MacOS with 32bit processor
bug 839 - TestSuite wimax-ss-mac-layer crashes on Darwin 9.8.0 Power Macintosh
bug 840 - BS scheduler does not support fragmentation for UGS flows
bug 841 - Multicast transmission breaks with QoS Wifi
bug 844 - YansWifiPhy::GetPowerDbm off-by-one problem when calculating Tx power
bug 847 - Segfaults on BaseStationNetDevice with OnOffApplication and rtPS sched
bug 849 - stray patch files in lwip directory
bug 850 - Ipv4GlobalRouting::LookupGlobal bug
bug 855 - waf dies badly when switching from debug to optimized build or vice versa
bug 856 - initialize vbl
bug 857 - Link-Local Multicast handle in Ipv4 Output processing
bug 859 - Output interface estimation for the source address bound socket in IPv4 Raw socket
bug 860 - waf sometimes dies while executing ns3header or gen_ns3_module_header tasks in case of parallel jobs
bug 862 - NotifyInterfaceUp() Adds network route even when netmask is /32
bug 863 - Wrong Scalar arithmetic
bug 864 - Invalid return value in UdpSocketImpl::Send and Ipv4RawSocketImpl::Send
bug 865 - Ipv4RawSocketImpl::RecvFrom does not return from address all the time.
bug 866 - WiMAX mobility models not aggregated to Node
bug 867 - Minor bug in Ipv4L3Protocol::Send()
bug 868 - invalid packet size after Ipv4L3Protocol::Send
bug 872 - ns3::PcapFileWrapper::Write explodes stack
bug 873 - Queue occupancy counter not decremented in WifiMacQueue::Remove()
bug 876 - Tcp socket does not handle ShutdownRecv correctly
bug 877 - python bindings broken with multiple inheritance ?
bug 880 - Node sending a packet to itself via 127.0.0.1 aborts
bug 885 - Error in Ascii tracing in Python examples
bug 888 - Writing ascii trace to additional tests fails
bug 891 - WiMAX device helper does not include propagation loss model by default
bug 894 - ./waf --run error message upon segfault
bug 895 - SimpleOfdmWimaxPhy SNR computation
bug 899 - EmuNetDevice::SetPromiscReceiveCallback not implemented

Known issues

ns-3 builds have been known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x

Release 3.7

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.7.tar.bz2

Supported platforms

ns-3.7 has been tested on the following platforms:

linux x86 gcc 4.4.0, 4.3.2, 4.2, 4.1.1, 4.1 and 3.4.6 (debug and optimized)
linux x86_64 gcc 4.4.0, 4.3.2, 4.2.4, 4.2.3, 4.2.1, 4.1.3, 3.4.6 (debug and optimized)
MacOS X ppc gcc 4.0.x and 4.2.x (debug and optimized)
cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)

Unofficially supported platform

mingw gcc 3.4.5 (debug only)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

Ad hoc On-Demand Distance Vector (AODV) routing model (RFC 3561)
IPv6 extensions support to add IPv6 extensions and options. Two examples (fragmentation and loose routing) are available.
NetAnim interface: Provides an interface to the Qt-based NetAnim animator, which supports static, point-to-point topology-based packet animations.
New topology helpers have been introduced
- PointToPointDumbbellHelper
- PointToPointGridHelper
- PointToPointStarHelper
- CsmaStarHelper
Equal-cost multipath for global routing: Enables quagga's equal cost multipath for Ipv4GlobalRouting, and adds an attribute that can enable it with random packet distribution policy across equal cost routes.
Binding sockets to devices: A method analogous to a SO_BINDTODEVICE socket option has been introduced to class Socket
Object::DoStart: Users who need to complete their object setup at the start of a simulation can override this virtual method, perform their adhoc setup, and then, must chain up to their parent.
Ipv4::IsDestinationAddress method added to support checks of whether a destination address should be accepted as one of the host's own addresses.
UniformDiscPositionAllocator added; distributes uniformly the nodes within a disc of given radius.
ChannelNumber attribute added to YansWifiPhy. Now it is possible to setup wifi channel using WifiPhyHelper::Set() method.
WaypointMobilityModel provides a method to add mobility as a set of (time, position) pairs
802.11p WiFi standards
UDP Client/Server application
Support transactions in the SQLite output interface, making it usable for larger amounts of data

API changes from ns-3.6

API changes for this release are documented in the file CHANGES.html.

Bugs fixed

The following lists many of the bugs that were fixed since ns-3.6, in many cases referencing the Bugzilla bug number

bug 752: Object::DoStart is not executed for objects created at t > 0
bug 767: Incorrect modulation for 802.11a modes
bug 725: wifi fragmentation and RTS cannot be used at the same time
bug 782: CreateTap () requires IP address in modes other than CONFIGURE_LOCAL.
bug 769: Queue::GetTotalReceived{Bytes,Packets}() broken
bug 738 ReceiveErrorModel called too late
Fix NSC improper response to FIN
Fixed bug in serialization of PbbAddressBlock.
Fix bug 780 (problem in RoutingTableComputation with asymmetric links), while adding debugging methods to OLSR.
bug 759: Ipv6 uses wrong outgoing interface.
bug 770: IPv6 size calculation for unknown options is wrong.
bug 771: Radvd does not set ttl value.
Fix bug 606: Arp depends on IP routing system
pad out CSMA payloads to 46 bytes if needed
Drop CSMA packets with CRC errors, rescan, dox tweaks
Add FCS capability to CSMA
Mesh:Dot11s: fixed airtime metric
Get emu working again: Add Dix/Llc option, add and use contextual realtime schedule ops, don't refcount realtime simulator impl
bug 695 - DcfManager::UpdateBackoff () uses slow HighPrecision::Div()
bug 674 - EIFS is not handled correctly in DcfManager::GetAccessGrantStart
bug 739 - OLSR: Strange HTime value in HELLO messages
bug 746 - UDP source address is not set to bound address
bug 735 Update Olsr for local delivery
bug 740 OLSR MprCompute () works wrong: fixed
bug 729 Enable IPv6 over PPP.
bug 645: fixes for opening stats file with OMNeT++
bug 689: default energy detection and CCA thresholds are changed to be more realistic.
bug 733: OLSR MPR Computation give incorrect result
Mesh: HWMP: fixed proactive routes
Mesh: fixed FLAME PATH_UPDATE procedure, fixed mesh.cc

Known issues

ns-3 builds have been known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x

Release 3.6

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.6.tar.bz2

Supported platforms

ns-3.6 has been tested on the following platforms:

linux x86 gcc 4.4.1, 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.4.0, 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
MacOS X ppc and x86 (gcc 4.0.x and 4.2.x)
cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

802.11 models:
- Add an implementation of the minstrel rate control algorithm (Duy Nguyen for gsoc)
- AthstatsHelper: enables the wifi device to produce periodic reports similar to the ones generated by madwifi's athstats tool (Nicola Baldo)
- 10MHz and 5MHz channel width supported by 802.11a model (Ramon Bauza and Kirill Andreev)
- Channel switching support. YansWifiPhy can now switch among different channels (Ramon Bauza and Pavel Boyko)
IPv6 models:
- IPv6 interface;
- IPv6 layer;
- IPv6 raw socket;
- Static IPv6 routing;
- ICMPv6 layer;
- Some ICMPv6 error messages (destination unreachable, ...);
- Neighbor Discovery Protocol (NS/NA, RS/RA, redirection);
- Ping6 application (send Echo request);
- Radvd application (send RA);
- Examples (ping6, simple-routing-ping6, radvd, radvd-two-prefix, icmpv6-redirect).
Wireless Mesh Networking models:
- General multi-interface mesh stack infrastructure (devices/mesh module).
- IEEE 802.11s (Draft 3.0) model including Peering Management Protocol and HWMP.
- Forwarding Layer for Meshing (FLAME) protocol.
Nix-vector routing:
- Ipv4NixVectorHelper
- Examples (nix-simple, nms-p2p-nix)
New Test Framework
- Use test.py instead of ./waf check or ./waf --regression
- Previous unit tests have been ported to new framework.
- Examples are tested for run-ability.
A new Flow Monitor module
- To very easily measure flow metrics in a simulation
- No need to use trace callbacks or parsing trace files

API changes from ns-3.5

API changes for this release are documented in the file CHANGES.html.

Known issues

ns-3.6 build is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x

Release 3.5

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.5.tar.bz2

Supported platforms

ns-3.5 has been tested on the following platforms:

linux x86 gcc 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.4.0, 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
MacOS X ppc and x86 (gcc 4.0.x and 4.2.x)
cygwin gcc 3.4.4 (debug only), gcc 4.3.2 (debug and optimized)
mingw gcc 3.4.5 (debug only)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

802.11 MAC:
- EDCA multi-qos-class support (Mirko Banchi)
- 802.11n initial support for A-MSDU frame aggregation (Mirko Banchi)
- aarf-cd and cara rate control algorithms (Federico Maguolo)
802.11 PHY:
- 802.11b PHY support (Gary Pei)
- Nakagami propagation loss model (Timo Bingmann)
- radiotap and prism headers for PCAP output (Nicola Baldo)
RandomVariable:
- GammaVariable and ErlangVariable (Timo Bingmann)
- ZipfVariable (Francesco Malandrino)
UdpEcho: allows setting the payload of echo packets
Ipv4/Ipv4RoutingProtocol: allow fine-grained control over routing policy and arbitrary composition of routing protocols

API changes from ns-3.4

API changes for this release are documented in the file CHANGES.html. The internal API and composition of the IPv4 stack underwent significant refactoring in this release cycle.

Known issues

ns-3 build is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x

Future releases

Our next release, which is expected to happen in 2 to 4 months from now, will feature the merging of some of our projects currently in development including fuller IPv6 support, some smaller features such as a new Global ARP package, and possibly a new Testing and Validation suite.

Release 3.4

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-allinone-3.4.tar.bz2

Supported platforms

ns-3.4 has been tested on the following platforms:

linux x86 gcc 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
MacOS X ppc and x86
cygwin gcc 3.4.4 (debug only)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

Wifi models: Timo Bingman contributed a ThreeLogDistance and a Nakagami propagation loss model based on the ns-2 models. Fabian Mauchle contributed multicast support.
Object Name Service: A facility allowing ns-3 Objects to be assigned names has been added.
Tap Bridge: A second option for integrating ns-3 with real-world hosts has been added. This allows for real hosts to talk over ns-3 net devices and simulated networks.
A new build option (ns-3-allinone) has been provided to make it easier for users to download and build commonly used ns-3 configurations.
The ns-3 calendar queue scheduler has been ported to ns-3.
XML support has been added to the ConfigStore.

API changes from ns-3.3

API changes for this release are documented in the file CHANGES.html

Known issues

ns-3 build is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x
optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
MinGW

The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes in preparation of the merge of the IPv6 API and implementation.

Future releases

Our next release, which is expected to happen in 2 to 4 months from now, will feature the merging of some of our projects currently in development including fuller IPv6 support, and IPv4 and routing protocol refactoring, and some smaller features such as a new Global ARP package and possibly a new Testing and Validation suite,

Release 3.3

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-3.3.tar.bz2

Supported platforms

ns-3.3 has been tested on the following platforms:

linux x86 gcc 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
MacOS X ppc and x86
cygwin gcc 3.4.4 (debug only)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

Emulated Net Device A new net device has been added as enabling technology for ns-3 emulation scenarios. See src/devices/emu and examples/emu-udp-echo.cc for details.
ICMP Support Support for several ICMP messages has been added to ns-3. See src/internet-stack/icmpv4.h for details.
IPv6 Address Support New classes to support IPv6 addresses has been added to the system. This is enabling technology for fuller IPv6 support scheduled for ns-3.4.
A flow-id tag has been added to the contributed code section
Star topologies can be created from the topology helper functions
The global routing code has been made dynamic (not just limited to (pre-simulation computation) and supports stub network interfaces and bridge net devices
A MatchContainer has been added to the configuration subsystem

API changes from ns-3.2

API changes for this release are documented in the file CHANGES.html

Known issues

ns-3 build is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x
optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
MinGW

The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes in preparation of the merge of the IPv6 API and implementation.

Future releases

Our next release, which is expected to happen in 2 to 4 months from now, will feature the merging of some of our projects currently in development including fuller IPv6 support, and IPv4 and routing protocol refactoring, and some smaller features such as an object naming facility and a new Global ARP package.

Release 3.2

Availability

This release is immediately available from: http://www.nsnam.org/release/ns-3.2.tar.bz2

Supported platforms

ns-3.2 has been tested on the following platforms:

linux x86 gcc 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.3.2, 4.2.3, 4.2.1, 4.1.3, 3.4.6
MacOS X ppc and x86
cygwin gcc 3.4.4 (debug only)

Not all ns-3 options are available on all platforms; consult the wiki for more information: http://www.nsnam.org/wiki/Installation

New user-visible features

Learning bridge (IEEE 802.1D) It is now possible to bridge together multiple layer 2 devices to create larger layer 2 networks. The Wifi and Csma models support this new mode of operation. (contributed by Gustavo Carneiro)
Python bindings It is now possible to write simulation scripts in python using our python bindings (contributed by Gustavo Carneiro).
Real-time simulator It is now possible to run simulations synchronized on the real-world wall-clock time (contributed by Craig Dowell).
Network Simulation Cradle It is now possible to use the Network Simulation Cradle (http://www.wand.net.nz/~stj2/nsc/) in ns-3 and run simulations using various versions of kernel TCP network stacks. (contributed by Florian Westphal as part of his Google Summer of Code work)
A statistics framework Joseph Kopena contributed a statistics framework which can be used keep track of simulation data in persistent storage across multiple runs (database and ascii file backends are available). More information on the wiki: http://www.nsnam.org/wiki/Statistical_Framework_for_Network_Simulation

API changes from ns-3.1

API changes for this release are documented in the file CHANGES.html

Known issues

ns-3 build is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x
optimized builds on Ubuntu 8.10 alpha 5 x86 gcc4.3.2
MinGW

The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes in preparation of the merge of the IPv6 API and implementation.

Future releases

Our next release, which is expected to happen in 2 to 4 months from now, will feature the merging of some of our projects currently in development: IPv6, emulation, and synchronous posix sockets.

Release 3.1 (2008/06/30)

The first ns-3 stable release

This release is immediately available from: http://www.nsnam.org/release/ns-3.1.tar.bz2

We dedicate this initial ns-3 release to our late contributor and friend, Federico Maguolo.

What is ns-3 ?

ns-3 is a new discrete-event network simulator designed for supporting network research and education. ns-3 features a solid, well documented C++ core and models for TCP/IP (IPv4), several link types including WiFi, and mobility models.

ns-3 is an open source project released under the GNU GPLv2 license which allows anyone to use ns-3 without having to pay any license fee or royalties. ns-3 is actively seeking new contributors to extend the range of supported models and/or to maintain existing models.

Where to get more information about ns-3

All the ns-3 documentation, is accessible from the ns-3 website: http://www.nsnam.org

Including, tutorials: http://www.nsnam.org/tutorials.html

Supported platforms

ns-3 is regularly tested on the following platforms:

linux x86 gcc 4.2, 4.1, and, 3.4.6.
linux x86_64 gcc 4.1.3, 4.2.1, 3.4.6
MacOS X ppc and x86
cygwin gcc 3.4.4 (debug only)

Known issues

ns-3 is known to fail on the following platforms:

gcc 3.3 and earlier
optimized builds on gcc 3.4.4 and 3.4.5
optimized builds on linux x86 gcc 4.0.x

The IPv4 API defined in src/node/ipv4.h is expected to undergo major changes in preparation of the merge of the IPv6 API and implementation.

Future releases

Our next release, which is expected to happen in 2 to 4 months from now, will feature the merging of some of our projects currently in development: python scripting, IPv6, emulation, a statistics framework and synchronous posix sockets.

Release 3.0.13 (2008/06/02)

point to point links generate ppp pcap traces
point to point links support asymmetrical data rates.
generate doxygen documentation for all attributes and trace sources
add ConfigStore and GtkConfigStore to contrib module
socket API now support tx and rx buffers: implemented for UDP and TCP
ARP cache now supports per-entry pending queues
lots of bugfixes and implementation and API cleanups

Warning: among API changes in this release, Application::Start and Application::Stop now interprets the time argument as a relative instead of absolute simulation time, to align with how Simulator::Schedule behaves. Any code that calls these APIs in the middle of the simulation will need to be adapted.

The API of Simulator::StopAt (time) has also changed. Now it is called Simulator::Stop (time), and takes a relative time, instead of absolute.

Release 3.0.12 (2008/04/07)

Add Attribute support to the TypeId metadata system and add attribute support to all in-tree models
Add a mid-level helper API to build simulation topologies and perform simple ascii and pcap link-level tracing.
Large amount of structural changes to accommodate the needs of the upcoming python bindings
new rate control algorithm (RRAA) and a jakes propagation model in the 802.11 model (Federico Maguolo).
regression test framework added
TCP delayed acknowledgements and multitasking server

Release 3.0.11 (2008/02/15)

Initial port of GTNetS TCP implementation (initial version that does not support multitasking or delayed acknowledgments yet, but supports a reliable stream service)
Changes to the ns-3 object model to create a TypeId-based metadata system
lots of bug fixes throughout the system
tutorial updates

Release 3.0.10 (2008/01/15)

Add tutorial document content;
Valgrind option for "waf" tool;
Doxygen organization changes.

Release 3.0.9 (2007/12/15)

A 802.11 model ported from Yans. This model supports:
- a rather extensive PHY model
- log-distance and friis propagation model
- a simple set of rate control algorithm (ARF, Ideal, AARF, constant-rate)
- adhoc and infrastructure mode (beacon+assoc)
Use smart pointer for Packet in the APIs
A new contrib directory with helper classes: EventGarbageCollector, Gnuplot
Tracing support for Applications
many bugs fixed

Release 3.0.8 (2007/11/15)

A simple error model
Source files for ns-3 tutorial

Release 3.0.7 (2007/10/15)

OLSR routing protocol
A timer class
Additional mobility models (random waypoint, random 2D walk)
A mobility visualization tool

Release 3.0.6 (2007/09/15)

Static multicast IPv4 routing
Logging overhaul (NS_LOG macros)
Refactoring of tracing subsystem
Tutorial document started

Release 3.0.5 (2007/08/15)

Refactoring to support win32-based unix environments (Cygwin, mingw)
"Packet socket" for allowing applications to access NetDevices directly
Generalized, polymorphic Address class
Add CSMA NetDevice model (from Emmanuelle Laprise)
Modularize IPv4 routing support (from Gustavo Carneiro)
Add mobility framework and basic mobility models
Global unicast centralized routing

Release 3.0.4 (2007/07/15)

Enable waf as the default build system.
Per-packet metadata: a system to track which headers and trailers are added to a packet
Simplifications to point-to-point devices and channel

Release 3.0.3 (2007/06/15)

Enable Waf for release tarballs: users can now build ns-3 with the "waf" tool. See doc/build-waf.txt.
Add support for variable time precision: it is now possible to run a simulation with an accuracy which is higher or lower than a nanosecond: seconds, milliseconds, microseconds, femtoseconds and picoseconds are supported.
Optimize and rework the COM framework, solidify the component manager
Many small API cleanups

Release 3.0.2 (2007/05/18)

Implement a new memory management infrastructure based on reference counting and smart pointers (the latter being optional)
Implement a COM-like framework with support for QueryInterface to provide object extensibility
Add support for a BSD-style socket API for user applications

Release 3.0.1 (2007/03/31)

First public release; not yet pre-alpha.
Simple UDP-based simulation script (examples/simple-p2p.cc)

Files

RELEASE_NOTES.md

Latest commit

History

RELEASE_NOTES.md

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ns-3 RELEASE NOTES

Release 3-dev

Supported platforms

New user-visible features

Bugs fixed

Release 3.41

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.40

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.39

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.38

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.37

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.36.1

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.36

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.35

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.34

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.33

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.32

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.31

Availability

Supported platforms

New user-visible features

Bugs fixed

Known issues

Release 3.30.1

Availability

Supported platforms

New user-visible features

Bugs fixed

Release 3.30

Availability

Supported platforms