Because I’m forever looking for this, and never have it when I need it:
August 28th, 2008
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On a cisco switch, enable, and show mac-address-table to find out which host(s) are connected to which ports.
If you know the port (for example, this evening I need port fa0/22), do a sh mac-address-table interface fastEthernet 0/22
Then, from a host with decent broadcast ping, do a broadcast ping, and grep -i for the mac address [...]
