NS2 : Simulating Link Failure in Wired Networks

   In this post I have included the NS2 Script (TCL Script) for simulating link failure in wired networks. 

$ns rtmodel-at 1.0 down $n1 $n2
The code given above will fail the link between Node n1 and Node n2 at time 1.0.

$ns rtmodel-at 2.0 up $n1 $n2
The code given above will reconnect the link between Node n1 and Node n2 at time 2.0.

Executing the TCL Script

Simulated Network in NAM

Initial Traffic Flow Simulation in NAM

Link Between Node1 and Node2 Failed

 Traffic Flow through a Different Path

Link Between Node1 and Node2 is Up Again

Click here to download the NS2 Script.