Monday, January 11, 2010

Finding Specific MAC - (Cisco IOS)

Finding a specific MAC in Cisco IOS can be accomplished via:

show mac-address-table

This gives a complete table of Port vs. Mac Addr.

If you want to find a specific mac address, lets say 00:11:22:33:44:5e use:

show mac-address-table | include 445e

The output is similar to Unix "grep" command.

For further debugging you can use show interface status and/or show cdp neighbors to see where it connects to.

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