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How to find physical location of a PC by MAC/IP?

C

Cooky

Golden Member
We have a couple of Cisco switches on our network.
I did a "show arp" command, hoping to find the port number of a particular MAC address. However, the output isn't very helpful:
c4506#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.x.x - 000b.befd.66ff ARPA Vlan1

What can I do to make the switch tell me the exact physical port, rather than "Vlan1"??
 
you need to look at the mac/cam tables to see where the switch learned the mac address.

the command varies..

in CatOS - show cam <mac address>
in IOS - sh mac-address-table <mac address> or just use show mac? to see find the command syntax.

that will give you the port. then you can see if that port is another switch or a host.

 
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