To view the ARP table on a Cisco switch or router in IOS, type show arp and press enter

VLAN        IP address     HW address             status
---------------------------------------------------------
vlan 1      192.168.0.1    00:16:a4:c5:43:b1      dynamic
vlan 1      192.168.0.6    00:16:a4:5a:ab:14      dynamic

To view only the entry for a single MAC address, type show mac address-table address xxxx.xxxx.xxxx (replace xxxx.xxxx.xxxx with the MAC address).

>show mac address-table address 1234.5678.910a
vlan   mac address    type      learn      age     ports
--------------------------------------------------------
Active 1234.5678.910a dynamic   Yes        0       Gi2/26