Network Simulator 2 (NS2) is a popular tool for network research and simulation, widely used in academic and professional settings. It allows researchers and engineers to model complex network scenarios and evaluate protocols and algorithms in a controlled environment. If you’re working on Ubuntu 18.04 and need to install NS2, this guide will walk you through the process.

Prerequisites

Before starting the installation, ensure you have:

  • Ubuntu 18.04 installed on your machine.
  • Sudo privileges to execute administrative commands.

Step 1: Update Your System

Start by updating your system to ensure all your existing packages are up-to-date. Open a terminal and run:

sudo apt update
sudo apt upgrade

Step 2: Install Dependencies

NS2 requires several libraries and tools to be installed. Install these dependencies using the following command:

sudo apt-get install -y nam
sudo apt-get install -y tcl-dev tk-dev

Step 3: Install NS2 (Network Simulator)

sudo apt-get install -y ns2

Check your installation

You can check your installation by running a simple Tcl script.

  • Create a file:
sudo -H gedit add.tcl &>/dev/null
  • Paste the following code in the file:
set a 20
set b 30
set c [expr $a+$b]
puts $c
  • Run in the terminal using ns-2

Conclusion

Congratulations! You have successfully installed NS2 on your Ubuntu 18.04 system. With NS2, you can now start modeling and simulating network scenarios to support your research and projects. If you run into any issues, the NS2 user community and documentation are excellent resources for support.

Happy simulating!

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