Install and configure Network simulator (ns3) on Ubuntu 14.04
 
   On CSE we have to take thesis on the final year. Those who are on  networking sector they have to work with Network simulator. Popular  network simulator is NS3. Sometimes we need to install and configure it  on ubuntu 14.04. As we have to download the source and compile it so  it’s difficult for begginers. I will try to explain it easily. If any  command not work please inform me.