How to install NS2 on Fedora 22

 The easiest way to install NS2 network simulator on Fedora 22 is to download an all-in-one package that contains all the tools needed for the simulator. The steps are as follows (tested on Fedora 22 x64): 

1- Download the file  ns-allinone-2.35.tar.gz from NS website at http://www.isi.edu/nsnam/ns/ns-build.html#allinone.

2- You need to move ns-allinone-2.35.tar.gz to your home directory and then unzip it as follows:

cd /home/mehdi

tar zxvf ns-allione-2.35.tar.gz

 cd ns-allinone-2.35 

3- Before we start building the package contents, we need to make sure the following tools are installed on Fedora: 

libX11-devel

tcl

tk

gcc-c++

libXt-devel

Install the tools with this command: 

yum install libX11-devel tcl tk gcc-c++ libXt-devel

4- Now, start the installation by typing ./install

It takes about 5 minutes to build and install components required by the network simulator. 

5- Set the paths in the file (/home/mehdi/.bash_profile) as shown below (replace "mehdi" with your user name): 

# .bashrc

# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi

# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=

# User specific aliases and functions

NS_HOME=/full/path/to/ns-allinone-2.34
PATH=$NS_HOME/bin:$NS_HOME/tcl8.4.18/unix:$NS_HOME/tk8.4.18/unix:$PATH
export PATH


# LD_LIBRARY_PATH
OTCL_LIB=/home/mehdi/ns-allinone-2.35/otcl-1.14
NS2_LIB=/home/mehdi/ns-allinone-2.35/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB
# TCL_LIBRARY
TCL_LIB=/home/mehdi/ns-allinone-2.35/tcl8.5.10/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB
# PATH
XGRAPH=/home/mehdi/ns-allinone-2.35/bin:/home/mehdi/ns-allinone-2.35/tcl8.5.10/unix:/home/mehdi/ns-allinone-2.35/tk8.5.10/unix
#the above two lines beginning from xgraph and ending with unix should come on the same line
NS=/home/mehdi/ns-allinone-2.35/ns-2.35/
NAM=/home/mehdi/ns-allinone-2.35/nam-1.15/
PATH=$PATH:$XGRAPH:$NS:$NAM

6- execute the .bash_profile using the command

source /home/mehdi/.bash_profile

7- check ns or nam by typing either ns or nam in the terminal

          ns
          % indicates ns interpreter is running
          nam

Note:  

a) In case you receive an error regarding the file ~/ns-2.35/linkstate/ls.h, change erase{ in ls.h to this->erase.

b) You must switch to root user in order to successfully install the package., and then you'll see the following screen showing that the installation has been successful.  

Reference: 

- Installing Network Simulator 2 (NS-2.35) in Fedora 19, http://www.nsnam.com/2013/09/installing-network-simulator-2-ns-2-35-in-fedora-19.html