The University of Arizona requires, in most cases, that computers connected to the U of A network be registered before they can obtain configuration information automatically. To register, you will need to know the hardware address of your network interface, and you need a NetID.
An adapter address (also known as a “MAC” address, which has nothing to do with Macintosh computers) is a set of 6 pairs of hexadecimal numbers (each character of each pair is either a number between 0-9 or a letter between A-F) that uniquely identifies a network adapter card in your computer. An example adapter address looks like 12:34:56:78:90:AB (some programs will display the address as 12-34-56-78-90-AB).
The adapter address should not begin with 44:45. Addresses that begin with 44:45 are typically modem addresses (also known as PPP Adapters) and will not work.
This is NOT the same as your IP address. An IP address is a set of 4 numbers between 0-255. An example IP address looks like 220.127.116.11.
Your computer may have more than one network card (e.g., Ethernet and wireless). Register them both if you will be using both on campus.
About hardware addresses -- use this for older operating systems.
Students, Faculty, and Staff can register their hardware address using this online registration form. Use the "Click here to manage registrations" link. You will need to log in using your NetID.