A MAC address, short for Media Access Control address, is a 12 digit hexadecimal number permanently assigned to a network interface card. Each company that supplies networking equipment is assigned a 6 digit OUI, or Organizationally Unique Identifier. Lucent, for example, is assigned the OUI 00022D, so wireless cards from Lucent begin with the numbers 00022D, or any other OUI assigned to them. You can find the MAC address of your device in several ways. Many manufacturers print the MAC address on the card itself.
- Click Start >> Run.
- Type in cmd.
- When you see black window pop up, type in ipconfig/all.
- The Physical Address listed is the MAC address of the card. The IP address is your address on the network.
Note: If you have multiple network cards in your machine (such as a wired card and a wireless card), you will need to be sure that you find the correct MAC address. In XP and above, wired cards are listed as "Local Area Connection" entries, and wireless cards are listed as "Wireless Network Connection" entries.
- For further assistance, contact the Help Desk at 972-883-2911 or assist@utdallas.edu.
- Click on the Apple icon >> System Preferences.
- Click Network.
- You can view the IP addresses of the ethernet adaptors from the Network Status section.
- Select the card you are looking for under Show dropdown menu.
- If you are looking for the Ethernet MAC address, it will be listed under the Ethernet tab as the Ethernet ID.
- If you are looking for the Airport MAC address, it will be listed under the Airport tab as the Airport ID.
- If you are looking for the Airport IP address, it will be listed under the TCP/IP tab as the IP Address.
- For further assistance, contact the Help Desk at 972-883-2911 or assist@utdallas.edu.
- Open a new shell prompt.
- Type the command ifconfig -a into the shell prompt. On Linux, the MAC address will be listed as the HWaddr. The IP address will be listed there as well.
