This is an update of an older post, as the utilities change, so has this concept of a cheap network spike - I use it to troubleshoot network issues, usually between a router and the network to understand what traffic is going where. The concept involves a transparent bridge between two network interface cards, and then looking at that traffic with a variety of tools to determine network traffic specifics. Most recently I used one to determine if a 4MB SDSL connection was saturated or not. It turned out the router was incorrectly configured and the connection had a maximum usage under 100Kb/s (!) At $1600 / month it's probably important to get this right - especially when the client was considering upgrading to a faster (and more expensive) link based on their DSL provider's advice. Hardware requirements: I'm using an old Dell Vostro desktop PC with a dual gigabit NIC in it - low profile and fits into the box nicely. Added a bit of extra RAM and a decent disk and that&
Angus Beath's Blog - a jotting down of thoughts, handy to remember things and general BS about the world.