tailieunhanh - This chapter covers configuring and managing a Windows

This chapter covers configuring and managing a Windows 2000 Server-based Dynamic Host Configuration Protocol (DHCP) server and DHCP clients. | DHCP This chapter covers configuring and managing a Windows 2000 Server-based Dynamic Host Configuration Protocol DHCP server and DHCP clients. Overview of DHCP The TCP IP protocol which is required for Internet connectivity and is rapidly becoming a protocol of choice for many intranets requires that each node on the network have a unique IP address. This includes any individual network object such as a server workstation printer router and so on. You can assign IP addresses to network nodes either statically or dynamically. With a statically assigned address you specify a fixed address for a given node and that address never changes unless you manually change it. Static assignment is the option to use when the network node must have the same IP address all the time. Web and FTP servers or devices such as printers that don t support anything other than static assignments are prime examples of such situations. You also can assign IP addresses dynamically through the Dynamic Host Configuration Protocol. DHCP enables network nodes to take IP address assignments from a DHCP server automatically at startup. Although dynamic assignment means that IP addresses for network nodes can and do typically change each time the node is restarted that poses a problem only in those situations in which a computer needs the same IP address for every session. In all other situations including for most workstations and many servers dynamic assignment enables you to manage a pool of IP addresses more effectively to prevent address conflicts. DHCP also lets you allocate a smaller number of IP addresses than the number of computers using them provided the maximum number of live nodes at any given time doesn t exceed the number of available addresses. An example of such a situation is when you re using a server to provide dial-up access for multiple users. You might allocate 20 IP addresses to accommodate 50 dial-in users. Each user would receive a unique IP address assignment from the .