计算机产业的两个趋势越来越明显,一是Internet的发展,二是移动式计算机的运用越来越广泛,人们需要访问基于IP的网络,包括Internet和Intranet。Internet的新标准Mobile IP(移动IP)将用来提供移动计算机的无缝连接,支持任何有线及无线的基础媒介层。 Internet路由器使用分布路由表,可以发送基于IP地址的IP数据包,其中一部分指定目标计算机的子网。这种传统方案妨碍了具有固定IP地址的计算机同其它子网的连接。简单的解决方法是不使用固定IP地址,而通过 Two trends in the computer industry are more and more obvious. One is the development of the Internet. The other is that the use of mobile computers is becoming more and more widespread. People need to access IP-based networks, including the Internet and Intranets. The new Internet standard Mobile IP (Mobile IP) will be used to provide a seamless connection to mobile computers supporting any wired and wireless base media layer. Internet routers use a distributed routing table to send IP-based IP packets, some of which specify the subnet of the target computer. This traditional approach hinders the connection of computers with fixed IP addresses to other subnets. The simple solution is to pass without using a fixed IP address