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To display the ARP table on a Unix system, just type “arp -a” ... The 00:06:2a:… address at the top of the list, for example, indicates that router.mynet.org is a Cisco device.
For example, to add or remove an address from your arp table, you could use commands like these: $ sudo ip neigh add 192.168.0.21 dev emp0s25 add an entry $ sudo ip neigh del 192.168.0.8 dev ...
Cisco Catalyst 3750....when I do the "show arp" command, it tells me what vlan the macs are in. I don't care what vlan the mac is in, I need to know the physical port (fa1/0/3 for example).