IPv6过渡技术概述与实现

摘要

IPv6已被认为是下一代互联网络协议的核心标准,IPv4向IPv6的转换已成为必然,因此掌握过渡技术成为网络管理人员的迫切任务.首先介绍目前常用的双栈、隧道、协议转换等过渡技术,对每种过渡技术的实现原理、适用环境和特点等进行阐述.然后对不同的过渡技术进行分析比较,指出了过渡过程中应遵循的相关原则.通过部署6to4隧道和ISATAP隧道,详细描述了网络节点间的报文交互及路由配置过程.成功实现了IPv4网络和IPv6网络的互联互通,从而为IPv6网络的建设、实施和应用提供理论指导和实践经验.%IPv6 was considered to be the core protocol of next generation Intemet, it became inevitable for IPv4 to upgrade to IPv6, and it was an urgent task for network administrators to know the transition mechanisms.Firstly, several common transition mechanisms, such as dual stack, tunnel and NAT-PT, and their principles, situations to employ and characteristics were introduced.Next, some comparison and analysis were carried out with different transition mechanisms,and the relevant principles to be followed during the process of transition were pointed out.Then with the deployment of 6to4 and ISATAP tunnel, the interaction of message between network nodes and the configuration of routers were described in detail.The communication between IPv4 and IPv6 network were accomplished, and it provided some theoretical guidance and practical experience for the construction, implementation and application of IPv6 network.