What is Ns2 in Unix

Let’s take a look about the substantial information about the network simulator 2 mainly in Unix.

Ns2 Installation in Unix

The Unix based OS is the best option to install the network simulator 2 and create the simulation to install Ns2 in Unix through the execution of below mentioned steps.

  • First, we have to download the Ns- 2.27 packages from the online sources
  • Then, we have to implement the below mentioned command to install the downloaded Ns2 packages


  • Following that, we have to change the .bash_profile and add some environment variables. put /home/[ User Name ]/ns-allinone-2.27/bin:/home/[ User Name ]/ns-allinone-2.27/tcl8.4.5/unix:/home/[ User Name ]/ns-allinone-2.27/tk8.4.5/unix into the PATH environment
  • Finally, we have to implement the below mentioned commands to validate the Ns2 installation process

cd ns-2.27


Essential Steps to Write Simulation Scripts

For your ease, we have highlighted the steps that are required to write the simulation script based on Ns2.

  • Creation of new simulator object
  • Turning on the tracing process
  • Creation of network
  • Creation of link and queue
  • Definition of routing protocol
  • Creation of transport connection
  • Creation of traffic

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