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

./install

• 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

./validate

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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