ns3 is a discrete event netowrk simulator, used to simulate topologies of wired and wireless networks. We use it to simulate one wired and one wireless plus wired network.

We wish to log and plot the network attributes and properties like throughput and Fairness index.

100 Mbps,20ms                 10Mbps,50ms              100 Mbps,20ms

n2__________________r1___________________r2___________________________n3

					10Mbps,100ms          

n0------------------bs1____________________bs2-------------------n1

____________ wired

------------------- wireless

r1 and r2 are routers and bs1 and bs2 are base-stations.