What is DHCP?

Dynamic Host Configuration Protocol (DHCP) is a method for configuring Internet Protocol (IP) network interfaces dynamically. A DHCP client does not require the user to configure an IP address, subnet mask, etc, on his computer, but rather receives these data from a DHCP server. It allows for a much easier user setup, more versitile network management, and easier support for mobile computers. DHCP is a standard protocol, defined in RFC 2131.

Do I need to register?

Any user may register his Ethernet card's hardware or "MAC" address with the DHCP server. (The term "MAC address" is from the Media Access Control protocol of Ethernet, and has nothing to do with the Apple Macintosh.) This registration is required for anyone who would like to use roaming DHCP (public portal) access. It is important to note that CNS does not provide the portals for public access, but rather works with the sponsoring department to manage the IP address assignment method.

To register your Ethernet card for roaming access log in to the MAC address registration web page with your PID and password.

Note that the registration process associates your PID to your device, so if you change or add devices you will have to change your registration. This can also be done on the MAC address registration web page. There is no mechanism for a non-Virginia Tech affiliate to register for DHCP.