network performance tools

[Nevada]

i'm looking for any software tools / utilities to test network performance. i want to test performance between workstations and servers. so far, i've used qcheck and ws_ping propack. anything else i should look at?

 

[JackMDS]

Link To:http://www.networkingfiles.com/Diagnostic/diagnostic2.htm

 

[mgpaulus]

Iperf is a nice little tool I used not too long ago for my problems. Is small, and comes for Dos/Winblows and Linux.