> > -l for length > > > > -b 80Kb -l 200B > > > > This will set it to a bandwidth of 80Kbps with a 200 Byte packet size. > > This is for UDP. > > The user interface offered by TCP hides such details. The best (and > indirect) way to change the size of packets sent by TCP is IMHO to > change the MTU (maximum transmission unit) of your network interface. > Thanks for pointing that out. I've been using iperf exclusively for testing VoIP which is UDP... -Ron