NS-2 installation on Ubuntu

Tip 1: Use ubuntu terminal with root privilege before proceeding to any of following steps.

Tip 2: Ubuntu 14.04 LTS is recommended.

Tip 3: Be Careful with the directories. Refer snapshots for the help!

1. Download and extract NS2

Click here to download ns-allinone-2.35.tar.gz and extract as follows:

# tar -xvzf ns-allinone-2.35.tar.gz

2. Installation of required packages

# apt-get install build-essential autoconf automake libxmu-dev

# apt-get install gcc-4.4

3. Important changes

Once all the packages are installed, we have to edit two files as follows:

(a.) Navigate and edit "ls.h"

# cd ns-allinone-2.35/ns2.35/linkstate

#gedit ls.h

(Go to line number 137 of that file and do change as highlighted in the figure:)

(b.) Navigate and edit "Makefile.in"

# cd ns-allinone-2.35/otcl-1.14

# gedit Makefile.in

(add "gcc-4.4" as highlighted in the figure)

4. Install

Navigate to 

# cd ns-allinone-2.35

./install

5. Setting environmental path

(Replace "rahul" with your username)

# LD_LIBRARY_PATH

OTCL_LIB=/home/rahul/ns-allinone-2.35/otcl-1.14

NS2_LIB=/home/rahul/ns-allinone-2.35/lib

USR_LOCAL_LIB=/usr/local/lib

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$USR_LOCAL_LIB

# TCL_LIBRARY

TCL_LIB=/home/rahul/ns-allinone-2.35/tcl8.5.10/library

USR_LIB=/usr/lib

export TCL_LIBRARY=$TCL_LIB:$USR_LIB

# PATH

XGRAPH=/home/rahul/ns-allinone-2.35/bin:/home/rahul/ns-allinone-2.35/tcl8.5.10/unix:/home/rahul/ns-allinone-2.35/tk8.5.10/unix

#the above two lines beginning from xgraph and ending with unix should come on the same line

NS=/home/rahul/ns-allinone-2.35/ns-2.35/ 

NAM=/home/rahul/ns-allinone-2.35/nam-1.15/ 

PATH=$PATH:$XGRAPH:$NS:$NAM

6. Run!

Type ns and you will get % sign in the next line, i.e., NS2 is successfully installed.
If it shows any error, reboot your system and retry the same.