常见的小型网络中（例如家庭网络和学生宿舍网），网络管理员都是采用手工分配IP地址的方法，而到了中、大型网络，这种方法就不太适用了。在中、大型网络，特别是大型网络中，往往有超过100台的客户机，手动分配IP地址的方法就不太合适了。DHCP（DynamicHostConfigurationProtocol）为我们解决了这一难题. -Common small networks (such as home networking and student dormitory network), networ

详细介绍DHCP协议的原理和应用，对编写DCHP服务器或客户端的软件有很大帮助。-Detailed introduction DHCP protocol principle and application, to write DCHP server or client software has very great help.

dhcp Servers should provide address, net mask, DNS servers, domain, and gateway (and perhaps other stuff, e.g., WINS) Client will be allowed to use the address for a period of time called a Lease Normal campus addresses: 2 day lease Roamin