摘要：随着互联网的快速发展，IP地址的枯竭及安全性问题已成为制约Internet发展的关键性问题。为了适应快速发展的网络环境，1991年IETF开始研究IPng协议，推出了IPv6协议，并将它作为下一代互联网的IP协议。新的IPV6协议能够提供足够多的IP地址，同时提高了数据传输的安全性。欧美以及亚洲的韩国、日本等国家在Ipv6方面的研究起步较早，并取得了一定的成果， 2004年3月，我国CNGI核心网CERNET2正式开通，实现全国200多所高校的高速接入。本文主要介绍了实现IPv4向IPv6的过渡技术，并对其各自的特点及实现过渡技术的隧道方式进行简单的介绍和分析。通过6to4隧道实验实现IPv4与IPv6的网络互连、互通，从而为高校新老校区网络的互连提供一种解决思路，并对未来IPv6的发展做出展望。
关键词：隧道技术; 双协议栈技术; 网络地址转换; 6to4隧道
Abstract:With the rapid development of the Internet,the exhaustion of the IP address and the safety problems has been become the key issues of the progress of the Internet.In order to adapt to the rapid development of the network environment,The IETF began to research IPng agreement in 1991,launched IPv6 agreement, and will it as the next generation of the Internet IP protocol.New IPV6 protocol can provide enough IP address,improve the security of data transmission. Europe, America and the South Korea, Japan of Asia in IPv6 research started earlier, and have achieved some results. Our country’s CNGI core nets CERNET2 has been opened officially, realize the high-speed access of more than 200 university of our country.This article mainly introduced the realization of the transition technology from IPv4 to IPv6,and to their respective characteristics and achieve the way of technology tunnel with the simple introduction and analysis.Through the 6to4 tunnel experiment to achieve the connection and communication,Thus for the new and old campus network interconnection offers a solution.in the meantime, make the looking of the development for the future of IPv6.
Key words: Tunnel Technology; Double protocol stack technology; Network address translation; 6to4 tunnel
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