The traffic generation rate can be modified by changing application properties. Note that the generation rate should be less than or equal to service rate for steady-state simulation, where the service rate is defined as the data rate supported by the Bottle-neck link. (Users can refer to the queuing theory experiment from experiment manual available at http://tetcos.com/downloads/netsim_experiment_manual_v9_1.pdf to understand this better)


Now the CBR (Constant Bit Rate) application generates constant rate of traffic. In this increasing packet size increases generation rate while decreasing Inter-arrival time increases generation rate. The formula for generation rate is


Generation Rate(Mbps) = ( (Packet size(bytes)∗8)) / (Inter_arrival_time(µs) )