I have to find where a server nic is connected in the network. I was certain there was a way to know what mac address was on which port but I needed Google to find a good article to show me how to get that information.

Once on the switch you can simply execute:

sh mac address-table

to see all the mac addresses the switch is aware of but when you are looking for a specific mac address you can execute this:

sh mac-address-table address 0011.bbcc.ddzz

Very simple and very convenient if I could only find the nic somewhere.

Ref.: http://www.itsyourip.com/cisco/howto-find-switchport-for-a-mac-address-on-a-cisco-catalyst-switch/

Posted on September 8