I’ve been doing some work on our new ProCurve switches and I ran into a new tool for testing out network speeds called NDT or Network Diagnostic Tester. This open source tool published by the Internet2 folks is a client server program that you can use to test the throughput between machines. It requires Java, but once it’s up it copies a payload across the wire and shows you statistics on the transfer. Here’s a resultant output for your viewing pleasure:
As you can see it event guesses the slowest link speed it crosses and and determines it’s duplex. The easiest way to to set this up is to download the ps-Performance Toolkit which is a Knoppix based network tool kit and run it from an old computer with a fast NIC. :) There’s a ton of other useful stuff on this bootable iso including:
Definitely with a download to check out. Enjoy.