Using DHCP (Dynamic Host Control Protocol)

Now that you've learned how TCP/IP configuration information is entered manually, it's time to kick back a little and look at how you can handle this configuration with a single click-thanks to DHCP. As mentioned previously, DHCP is used to simplify the assignment of IP configuration information on a TCP/IP network. DHCP allows you to dynamically assign IP addressing information to client systems on the network, reducing possible human error and administrative overhead. DHCP is not restricted to a single platform; it is a generic technology that is supported by all the major operating systems.

When DHCP is used on a network, the client systems must be configured to use DHCP. Each of the client operating systems has some method of configuring the system to receive IP information from the DHCP server. Configuring a client to use DHCP is often as simple as clicking a check box or selecting a radio button.

When client systems are configured to use DHCP, they can receive more than just the IP address. They can also be assigned any of the other TCP/IP information, such as the default gateway, subnet mask, and any DNS or WINS servers. In addition, some DHCP server platforms support a range of other information.

When the networking configuration is complete, the system should be able to function on the network. However, to connect to a server system and use its resources, the system needs client software, which is discussed in the following section.