1、 I 摘 要 随着互联网技术的快速发展，以 Internet 基石的 TCP/IP 协议族正在进行着一场前所未 有的变革。这场变革的原因是 IPv4 协议在面对 Internet 发展时显现出越来越多的不足，人 们为解决这些不足提出用 IPv6 协议取代 IPv4 协议的方案。IPv6 作为下一代互联网的核心 协议，具有诸如海量地址、组播、邻居发现、自动配置、服务质量、可移动等许多新特性， 现行的 IPv4 向 IPv6 过渡势在必行。然而，怎样实现 IPv4 向 IPv6 的平滑过渡和在现有的 IPV4 网络上部署 IPv6 网络仍然是目前混合组网的主要研究方向。 本文首先收集了国内外在研究
2、 IPv6 协议和 IPv6 过渡技术的最新资料，并分析了 IPv6 新特性，描述了 IPv6 协议的组件及特性等，对目前比较成熟的三种过渡技术，双协议栈、 隧道和 IPv6/IPv4 协议与地址转换进行了全面的分析和比较。然后，对现有的 IPv4 校园网 络结构进行了分析，提出了几种适合现有 IPv4 校园网络平滑升级到 IPv6 校园网络的规划 方案，并在网络设备的选择上进行了详细的介绍。论文中的实验基于 Dynamips 网络仿真 模拟工具，基于实际校园网的情况并充分体现 IPv6 的特性的基础上，结合 IPv4 校园网现 状，构造了 IPv6 实验平台，并对 IPv6 校园网方案进行验
3、证。 关键词：互联网；IPv4；IPv6；校园网；网络设备；过渡技术 ABSTRACT As the internet technology has developed rapidly, to internet cornerstones of ip the tcp protocol is a game of unprecedented changes. this change is the cause of the agreement on the internet ipv4 development of an increasing number of people to solve the
4、deficiencies in the agreement replaced by ipv6 ipv4 agreement. Ipv6 as the core of the next generation internet protocols, such as will an address, the group, found on his neighbour, automatic configuration, quality service, mobile and many new features, ipv4 to ipv6 the transition it is imperative.
5、 however, ipv4 to ipv6 how to achieve a smooth transition and in the existing ipv4 the network deployment ipv6 network and is still present a major study. The first collection and study ipv6 agreement and the transition of the latest information technology to ipv6, and analyzed ipv6 the new features
6、, ipv6 agreement and features, for there is three types of technology, the protocol stack transition, ipv4 to ipv6 tunnel and agreements address translation for a full analysis and comparison. Then, ipv4 to the existing campus was analysed and made some of the existing ipv4 to ipv6 network is upgrade to the planning scheme, internet and network equipment chosen on the details. Dynamips network based on paper experiments based on actual simulation tools, in case of campus and fully reflect the c
