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sibanez12 and jnfoster SIGCOMM 2019 Tutorial Edits (#272)
* Updated the utils/ to allow exercises to customize
host configuration from the topology.json file.

Now hosts and `ping` each other in the basic exercise. Other Linux
utilities should work as well (e.g. iperf).

mininet> h1 ping h2
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=62 time=3.11 ms
64 bytes from icmp_seq=2 ttl=62 time=2.34 ms
64 bytes from icmp_seq=3 ttl=62 time=2.15 ms
--- ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 2.153/2.540/3.118/0.416 ms
mininet> pingall
*** Ping: testing ping reachability
h1 -> h2 h3
h2 -> h1 h3
h3 -> h1 h2
*** Results: 0% dropped (6/6 received)

Only updated basic exercise, still need to update other exercises.

Also, updated the because I was running into issues
with latest version of vagrant.

* Accidentially added the solution to the basic exercise in the previous
commit. Undoing that here ...

* Updated the topology.json file and table entries for the basic_tunnel

* Updated P4Runtime exercise with new topology and table entries.

* Fixed MAC addresses in P4Runtime exercise. It is working now.

* Fixed MAC addresses in P4Runtime exercise starter code

* Updated ECN exercise to use new topology.json file. Updated the
table entries / MAC addresses as well.

* Updated the topology.json file and table entries for the MRI exercise.

* Updated source_routing exercise with new topology file and verified
correct functionality.

* Updated load_balance exercise with new topology.

* Moved basic exercise triangle topology into a separate folder

* Added new topology for the basic exercise: a single pod of a fat-tree.

* Updated Makefiles and to allow exercises to configure
each switch with a different P4 program. This is mainly for the
firewall exercise.

* Updated Makefiles of project to work with new utils/Makefile

* Updated load_balance and p4runtime exercise Makefiles

* Initial commit of the firewall exercise, which is a simple stateful
firewall that uses a bloom filter. Need to update README files

* Initial commit of the path_monitor exercise. It is working but still
need to update the README and figure out what we want the tutorial
attendees to implement.

* Updated README file in firewall exercise. Also removed the bits
from the starter code that we want the tutorial attendees to

* Renamed path_monitor exercise to link_monitor

* Updated the README in the link_monitor exercise and removed the
bits from the starter code that we want the tutorial attendees
to implement.

* Updated README for the firewall exercise

* Adding pod-topo.png image to basic exercise

* Added firewall-topo.png image to firewall exercise

* Added link-monitor-topo.png to link_monitor exercise

* Updated README files to point to topology images

* Updated top-level README to point to new exercises.

* Fixed link for VM dependencies script in README

* Updated bmv2/pi/p4c commits

* Updated README files for exercises to fix some typos and added
a note about the V1Model architecture.

* Added a note about food for thought in the link_monitor README

* Updated the firewall.p4 program to use two register arrays rather
than a single one. This is to make the design more portable to
high line rate devices which can only support a single access
to each register array.

* Minor fix to firewall exercise to get rid of compiler warning.

* Updated comment in firewall exercise.

* Minor (typo) fixes in the firewall ReadMe

* More info in firewall exercise ReadMe step 2

* Updated firewall.p4 to reuse direction variable

* More testing steps, small fixes in firewall exercise Readme

* Added food for thought to firewall Readme

* Cosmetic fixes to firewall ReadMe

* Made a few updates to the basic exercise README and added more
details to the link_monitor exercise README.

Also added a command to install grip when provisioning the VM.
This could be useful for rendering the markdown README files offline.

* Updated top level README so it can be merged into the master branch.

* Moved cmd to install grip from root-bootstrap to user-bootstrap
Latest commit 76a9067 Aug 14, 2019
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exercises SIGCOMM 2019 Tutorial Edits (#272) Aug 14, 2019
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.gitignore P4 Developer Day 2018 Spring (#159) Jun 1, 2018
LICENSE added Apache 2.0 LICENSE file Oct 1, 2015
P4_tutorial.pdf Remove extra slides (#192) Aug 20, 2018 SIGCOMM 2019 Tutorial Edits (#272) Aug 14, 2019

P4 Tutorial


Welcome to the P4 Tutorial! We've prepared a set of exercises to help you get started with P4 programming, organized into several modules:

  1. Introduction and Language Basics
  1. P4Runtime and the Control Plane
  1. Monitoring and Debugging
  1. Advanced Behavior
  1. Stateful Packet Processing


The slides are available online and in the P4_tutorial.pdf in the tutorial directory.

A P4 Cheat Sheet is also available online which contains various examples that you can refer to.

Obtaining required software

If you are starting this tutorial at one of the proctored tutorial events, then we've already provided you with a virtual machine that has all of the required software installed. Ask an instructor for a USB stick with the VM image.

Otherwise, to complete the exercises, you will need to either build a virtual machine or install several dependencies.

To build the virtual machine:

  • Install Vagrant and VirtualBox
  • Clone the repository
  • cd vm
  • vagrant up
  • Log in with username p4 and password p4 and issue the command sudo shutdown -r now
  • When the machine reboots, you should have a graphical desktop machine with the required software pre-installed.

Note: Before running the vagrant up command, make sure you have enabled virtualization in your environment; otherwise you may get a "VT-x is disabled in the BIOS for both all CPU modes" error. Check this for enabling it in virtualbox and/or BIOS for different system configurations.

You will need the script to execute to completion before you can see the p4 login on your virtual machine's GUI. In some cases, the vagrant up command brings up only the default vagrant login with the password vagrant. Dependencies may or may not have been installed for you to proceed with running P4 programs. Please refer the existing issues to help fix your problem or create a new one if your specific problem isn't addressed there.

To install dependencies by hand, please reference the vm installation scripts. They contain the dependencies, versions, and installation procedure. You should be able to run them directly on an Ubuntu 16.04 machine:

  • sudo ./
  • sudo ./
You can’t perform that action at this time.