To check IP to MAC address mapping:
| show arp |
| show ip arp |
Example: show ip arp ethernet1/4
To see Mac Address Table (CAM Table) on a Cisco Switch:
| show mac-address table |
To see Windows ARP cache:
| cmd prompt> arp –a |
| show ip arp vrf ISP-PRI | For VRF MAC address on Comcast device |