Hi, (I hope this list is still active) I am a newbie. I am testing multicast support on three computers connected through a gigabit switch. When only the server, ran as (rand.bin is a 1Gb file) udp-sender --interface eth1 --file rand.bin and ONE client udp-receiver --file rand.bin are connected, the bandwidth is around 937.32 Mbps, which is very good. But with two or more clients if consistently drops to 11 Mbps I would expect to bandwidth to decrease as 1/N, where N is the number of clients. What am I missing? I am using a dumb switch. Thanks -- Best regards / Cordialmente, William-Fernando Oquendo -------------------------- Este correo puede carecer de tildes o eñes debido al teclado.