Your computer uses a service called ARP (Address Resolution Protocol) to resolve and track the TCP/IP and MAC address of the remote devices that you're communicating with. This information is handy for doing semi-low level network troubleshooting. It can also be used for granting or denying permissions to a network segment or device on that network.
To determine the MAC address of a remote device:
- Open the MS-DOS prompt (From the Run... command, type "CMD" and press Enter).
- Ping a remote device that you want to find the MAC address (for example: PING 192.168.0.1).
- Type "ARP -A", and press Enter.
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
Interface: 192.168.1.100 --- 0x10004
Internet Address Physical Address Type
192.168.1.1 aa-fb-c8-34-da-7a dynamic