NS2 Configuration and Installation

• download the NS-2.35 allinone software from the following link. 
  

  http://sourceforge.net/projects/nsnam/files/allinone/ns-allinone-2.35/ns-allinone-2.35.tar.gz/download
  
  (or)
  
  https://dl.dropbox.com/u/24623828/ns-allinone-2.35.tar.gz
  

  
  
• Copy that file to /home/<username> (home folder of user)
• Open terminal again and execute the following commands one by one

  • tar zxvf ns-allinone-2.35.tar.gz

  • cd ns-allinone-2.35

  • ./install
    

• You may possibly get one error during your installation is linkstate/ls.h error
• If you get the above error, open the file (~ns-2.35/linkstate/ls.h) using gedit or any text editor
• Go to line number 137 and change this line
  

  (void eraseAll() { erase(baseMap::begin(), baseMap::end()); })  
  to
  void eraseAll() { this->erase(baseMap::begin(), baseMap::end()); }

• again you try the command ./install and this time the installation will be successful.
• Once installed the PATH information will be provided to you.
• Copy the PATH and LD_LIBRARY_PATH Variable to /home/<username>/.bash_profile (see a dot in the beginning it is a hidden file)

• edit by -----> gedit /home/<username>/.bash_profile (for fedora)
  edit by -----> gedit /home/<username>/.bashrc (for ubuntu)        

Input the path information in .bash_profile file like this 

 export PATH=$PATH:/home/<username>/ns-allinone-2.35/bin:/home/<username>/ns-allinone-2.35/tcl8.5.10/unix:/home/<username>/ns-allinone-2.35/tk8.5.10/unix

export LD_LIBRARY_PATH=/home/<username>/ns-allinone-2.35/otcl-1.14:/home/<username>/ns-allinone-2.35/lib

then checkitby
$>  ns
a
$> nam