Cisco Router: Which IP is connected to which port?

This isn’t any great revelation I know, it’s simply a reminder-to-self, because I seem to have a mental block when it comes to this.

show arp

show mac

And that’s it.  The arp table will give you the ip-to-mac mapping, and the mac table will give you the mac-to-port mapping.

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  1. #1 by Terra - January 20th, 2009 at 02:30

    well written post…thank you

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