However, if the management address of this last switch is in the same subnet as the “bad” pc, then you will have to ping the subnet and show arp until you find the machine.Īnother way might be to locate a tool on the internet names This might also help. I would shutdown the interface and wait for the phone call from the user that just lost connectivity. Finally you will find a show mac-address command that shows the interface that the device is connected.

It will show the path perhpas to another swithc or router. The result is the interface where the mac can be found. show mac-address table | include (where x is the mac address). Go to the core switch and display the arp table.