Connect to the switch
ping 192.168.1.x -- ping device
show ip arp | inc 192.168.1.x -- look for the mac address
show mac-address-table | Inc 0000.2222.3333 -- use mac address from the ARP table
The result will be something like this
192.168.1.x 00:17:32 0000.2222.3333 e1/10
