ATCN-Programs

The ATCN-Program is written to simulate the Congestion Control Process in TCP in NS-3.

Structure of the Whole project

.
├── README.md
├── experiment
│   ├── 01_result
│   │   ├── ATCN-Program-Tcprate.txt
│   │   └── ATCN-Program-Udprate.txt
│   ├── 02_result
│   │   ├── ATCN-Program-routerBufferSize.txt
│   │   └── ATCN-Program-tcpBufferSize.txt
│   ├── 03_result
│   │   └── ATCN-Program-MTU.txt
│   ├── 04_result
│   │   └── NewReno
│   │       ├── ATCN-Program-ascii
│   │       ├── ATCN-Program-cwnd.txt
│   │       ├── ATCN-Program-inflight.txt
│   │       ├── ATCN-Program-next-rx.txt
│   │       ├── ATCN-Program-next-tx.txt
│   │       ├── ATCN-Program-rto.txt
│   │       ├── ATCN-Program-rtt.txt
│   │       └── ATCN-Program-ssth.txt
│   └── ATCN_experiment_report.pptx
├── sample
│   └── atcn-case-study.cc
└── src
    └── ATCN-Program.cc

Overview of NS-3 Simulation Environment Setup through WSL2

• Download Visual Studio Code and WSL2.
• Prerequisites Configuration.
• NS-3 installation package Download.
• Configure and build NS-3 Environment.
• Run a quick simulator.

Prerequisites Configuration

1. Switch to the home directory of your Ubuntu ISO file.

   • $ cd /home/hostname

2. Fetch the latest version of the package list from your distro's software repository.

   • $ sudo apt update

3. Download the prerequisites to start NS-3.

   • $ sudo apt install gcc g++ python3 python tcpdump

NS-3 installation package Download

1. Download the package from gitlab.

   • $ git clone https://gitlab.com/nsnam/ns-3-dev.git

2. Switch to the ns-3-dev directory.

   • $ cd ns-3-dev/

3. Switch to the ns-3.35 branch.(The newer branch uses Cmake to build source codes instead of Waf)

   • $ git checkout -b ns-3.35-branch ns-3.35

Configure and build NS-3 Environment

Use ./waf instruction to configure and build NS-3 environment. Make sure to run these commands under the root of ns-3-dev.

./waf configure
./waf build

Run a quick simulator

Run the demo simulator scratch-simulator.cc file under the path of scratch/.

./waf --run scratch/scratch-simulator.cc

How to run the ATCN-Program

It is weird that the source program can only run normally in the scratch directory, which may be the internal mechanism of NS-3.

cd /home/hostname/ns-3-dev
git clone https://github.com/ForgottenField/NS3-TCP-Congestion-Simulation.git
cp NS3-TCP-Congestion-Simulation/src/ATCN-Program.cc scratch/
./waf --run scratch/ATCN-Program.cc

Fail to build NS-3 environment

If the command ./waf build can not be executed successfully, please use the following command to check whether there is sufficient memory allocated for wsl.

free -g

This command will show your memory size in gibibytes, and you can change the -g option to output in different forms.

After that, you can refer to this answer to increase your virtual memory in wsl.