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 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) )