Find Mac Address of a Device on different VLAN

jawad.sharaf · ‎11-22-2011

Hello everyone,

How to find Mac address of a router or a PC on a different Vlan. I can ping the device.

I pinged and run arp -a command but the mac address doesn't appear in the list.

Is there any other way to get mac address.

Thanks

cadet alain · ‎11-23-2011

Hi,

do a SPAN session(port mirroring) and you'll see traffic from this router or PC.

Regards.

Alain

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Jon Marshall · ‎11-23-2011

Where are you running the arp -a ?

If you have a PC in vlan 10 and then ping a device on vlan 11 you will not see the mac-address for vlan 11 device on your PC using arp -a. You would have to log onto the device that is responsible for routing vlan 11 and then look at the arp table on that.

Jon