NS2 network simulator pros and cons

Installation
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1. To install in Ubuntu-16.04 use the following commands

sudo apt-get install ns2  

        sudo apt-get install xgraph
    
2. For installing nam you have to download it from here (in ubuntu repositories nam is depricated .
Ubuntu 64 bits
Ubuntu 32 bits

3. Now run the following command to install nam

cd ~/Downloads

        sudo dpkg --install  nam_1.14_amd64.deb (for 64 bit ubuntu)
        sudo dpkg --install  nam_1.15-10_i386.deb (for 32 bit ubuntu)

4. Now restart you terminal and run the command

ns

It will show % as output which indicates you have successfully installed ns2 program .

To run a tcl program in ns2
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 1. Download ns-simple.tcl  program . And run following commands in terminal

cd ~/Downloads
ns ns-simple.tcl

Now you should see the output in nam animator .

For getting started with ns2
---------------------------------------------
1. For tutorial and documentation
Tutorial
NS2 Documentation

2. For 2000 examples of tcl program

https://drive.google.com/file/d/0B7S255p3kFXNUUpUYWJ6TTdseWc/view?usp=sharing


Resource used
-----------------------
http://nile.wpi.edu/NS/simple_ns.html
https://www.linuxquestions.org/questions/ubuntu-63/installation-problem-in-nam-4175604400/#post5701136