On Fri, Sep 01, 2006 at 10:40:25AM -0400, John Stoffel wrote:
This will only work if you have a bridged network, once you have a switch in the way, the MAC address will change. This is because
Nope - a switch is logically identical to a bridge with more than two ports. A packet forwarded by a router will have the routers MAC address because the router has to generate a new ethernet frame with the same ethernet payload as the original packet, while a switch will blindly forward the packet to wherever it's FDB tells it to.
For network switches, each port has it's own MAC address. Basically,
Only if the switch supports spanning tree, and only for spanning tree - those per-port MACs aren't used for anything else. -- Frank Sweetser fs at wpi.edu | For every problem, there is a solution that WPI Network Engineer | is simple, elegant, and wrong. - HL Mencken GPG fingerprint = 6174 1257 129E 0D21 D8D4 E8A3 8E39 29E3 E2E8 8CEC