How to install NS2 on windows 7 with the help of Cygwin Window

Here I will show you how to install NS2 on Windows 7(32-bit | 64-bit):

Step 1:

Please go to below given link and download the three .rar files after that place these files into in a single folder.

•  Part 1:NS 2.35-Part1
• Part 2:NS 2.35-Part2
• Part 3:NS 2.35-Part3

Step 2: 

• Now Extract the NS 2.35.part1 only.It will extract the part2 an part3 automatically.
• Extract after complete download
• Don’t Extract the part2 and part3 

Step 3:

•  After extraction you’ll get a folder named NS 2.35
• Inside this folder you get cygwin setup , .bashrc etc..
• Now install the setup.  Choose install from local directory
• Press Next
• Don’t change the default Root Directory
• In Local Package Rpository field browse to: NS 2.35/nslocal/release
• Click Next
• Click on the Circle
• After clicking the circle the default turn to install
• After this press Next it will install the necessary packages for NS2
• check create a desktop shortcut and start menu shortcut
• Then installation finished.:)p
• Now you are halfway done !!!

Step 4:

• Now create a folder Named Noureddine inside the C:\cygwin\home
• Now copy the ns-allinone-2.35-RC7avecxgraph.rar and Extract there. You’ll get  ns-allinone-2.35-RC7 folder.
• Now cpoy the .bashrc file from the downloaded Extract folder
• Now go to the “C:\cygwin\home\user” folder and replace(i.e paste) the .bashrc file that you copied.
• Now open the Cygwin command window which is on your desktop and type source .bashrc
• Now type ns  “$” change to “%”
• Now type ns-version it will show like:
• Now press exit.
• Now type startxwin you’ll get a new window.
• Now type nam you will get a screen.
• Now go to file and quit the nam window
• Now hold the main tab and drag your mouse to quit from Cygwin window(the white window)
• And exit from ‘cygwin command’ window (type exit)
• Important:
• go to Task manager (Alt+Ctrl+Del) and goto process tab and search for XWin.exe
• End process