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传统 IP 技术的主机使用固定的 IP 地址和 TCP 端口进行通信。在通信期间,它们的 IP 地址和 TCP 端口号必须保持不变,否则 IP 主机之间的通信将无法继续。移动通信的兴起,催生了移动 IP 技术。移动 IP 能够保证计算机在移动过程中,在不改变现有 IP 地址、不中断正在进行的网络通信以及不中断正在执行的网络应用的情况下,实现对网络的不间断访问。一个移动 IP 终端需要两个 IP 代理服务器,第一个称为“家”代理,第二个称为“外”代理。移动 IP 技术的工作机理分为以下几部分。A.移动终端在其归属网中,以普通的 TCP/IP 方式进行通信,不使用移动 IP。B.移动终端漫游到其他网络,仍使用原来的 IP 地址进行通信。为了收到别人发给它的 IP 包,它需要向家代理注册当前位置的地址——转交地址。它可以
Traditional IP technology hosts use fixed IP addresses and TCP ports to communicate. Their IP address and TCP port number must remain the same during communication, otherwise communications between IP hosts will not be able to continue. The rise of mobile communications, gave birth to mobile IP technology. Mobile IP ensures uninterrupted access to the network while the computer is on the move, without changing existing IP addresses, without interrupting ongoing network communications and without interrupting ongoing network applications. A mobile IP terminal requires two IP proxies, the first one called “home” and the second called “foreign”. The working mechanism of mobile IP technology is divided into the following sections. A. mobile terminal in its home network, to ordinary TCP / IP communication, do not use mobile IP. B. The mobile terminal roams to other networks and still uses the original IP address for communication. In order to receive IP packets sent by others, it needs to register the address of the current location with the home agent - the care-of address. it can