基于NAT—PT的转换网关的技术原理研究

Research of the Translation Gateway＇s Technology Theory Based on NAT-PT

随着互联网技术的发展和IPv6逐步的应用，全球互联网络出现了IPv4和IPv6两种不兼容网络共存的局面。但IPv6最终要完全取代IPv4，这将是一个长期的过程。在此共存的过程中，使用NAT—PT转换网关技术可较好地解决IPv4节点和IPv6节点相互通信的问题。本文提出了转换网关的工作机制，并探讨了机制中各个模块的实现方式，讨论了转换网关的局限性。

With the development of Internet and IPv6, it appears coexistence of networks based on IPv4 and those based on IPv6, and they are uncompatible. It is inevitable that IPv6 will replace IPv4, but it is a long process. In the process, the translation gateway can solve this problem well that IPv6 nodes and IPv4 nodes communicate each other. In this article, the working mechanism of translation gateway is presented and the implement mode of each module is discussed. In the end, the limitation of translation gateway is probed.