Packets are sent at a fixed rate during on periods, and no packets are sent during off periods. Both on and off periods are taken from an exponential distribution. Packets are constant size. These sources can be used to generate aggregate traffic that exhibits long range dependency.
Packets are constant size.
Optionally, some randomizing dither can be enabled on the interpacket departure intervals. Each record in the trace file consists of 2 32-bit fields. The first contains the time in microseconds until the next packet is generated. The second contains the length in bytes of the next packet. These classes can be created from OTcl.