Why TCP does'nt use all the bw when the propagation delay is long. For exmple : I used only one source of TCP over the link 100ms 2Mb and the bw of TCP was only 800Kb. it's not the same when i use 10ms, there tcp take all the bw. Any help?? Best Regards Betty ______________________________________________________ Bo�te aux lettres - Caramail - http://www.caramail.com