How to resolve NIC service IDs (GUIDs)?

Question

Is there a way to resolve NIC service IDs (the GUID assigned to each hardware NIC) from the command line?

Answer 1

If you mean the actual GUID that the machine has assigned to your nics, use netsh from the cmd line (you may need to start the Wired AutoConfig and/or WLAN AutoConfig services first).

For wired NICs:

netsh lan show interfaces

And for wireless NICs:

netsh wlan show interfaces

The output will include the GUIDs of each network interface.

Answer 2

I assume you're referring to MAC addresses?

If so, the arp command is your friend. arp -a will show all the addresses your OS knows about. arp -a <IP> will display just the MAC address of a specific host. If you don't have a GUID on a specific host, pinging them should pick it up. That being said, this will only work on hosts on the local network. Packets sent to/from external networks will utilize the MAC address of the local gateway.


--Christopher Karel