摘 要
现如今,IPv4地址资源已经接近枯竭,IPv4向IPv6过渡属于必然趋势,这迫使在部署下一代互联网时,不得不将如何使IPv4向IPv6的平稳过渡纳入考虑的问题内。目前比较成熟的几种IPv4/IPv6转换技术中,比较成熟的有NAT-PT,隧道以及双协议栈技术。但这些也都只是初期技术,大部分的IPv6网络还都处在实验阶段。目前的网络技术是IPv6的海洋,某些IPv6网络只是其中零散的小小的岛屿。在现阶段需求IPv6访问IPv4网络时,对于目前过渡期间的访问技术的研究和完善则成为必需。整个网络从IPv4过渡到IPv6需要比较长的时间,两种网络将在今后长期共存。所以研究基于校园网的IPv4向IPv6的平滑过渡技术是十分必要且有前景的。
本文介绍IPv6协议基本概念,了解IPv6寻址、IPv6报头结构、邻节点发现、IPv4到IPv6的过渡技术分析、IPv6路由、IPv6的安全性进行初步分析;简要介绍本论文使用的模拟软件 packet tracer及其基本使用方法;通过路由器模拟软件packet tracer完成论文相关的IPv6网络实验,并对结果进行测试、分析。
关键词:IPv4;IPv6;转换;网络实验;packet tracer
Abstract
Nowadays, the resources of IPv4 address are almost exhausted and the transition from IPv4 to IPv6 is an inevitable trend, which forces the deployment of the next generation Internet. We have to consider how to make the smooth transition from IPv4 to IPv6. Among the several mature IPv4/IPv6 conversion technologies, the more mature ones are NAT-PTT, tunneling and dual-protocol stack technology. Most of the IPv6 networks are still in the experimental stage. The current network technology is the ocean of IPv6, some IPv6 networks are just scattered small islands. When IPv6 is required to access the IPv4 network, it is necessary to study and improve the access technology during the transition period. It takes a long time for the whole network to transition from IPv4 to IPv6. The two networks will coexist for a long time in the future, so it is necessary and promising to study the smooth transition technology from IPv4 to IPv6 based on campus network.
In this paper, the basic concept of IPv6 protocol is introduced, and the structure of IPv6 addressable IPv6 header is understood. The security of IPv6 routing is analyzed preliminarily by the technology of transition from IPv4 to IPv6. This paper briefly introduces the simulation software packet tracer used in this paper and its basic methods of use, and completes the related IPv6 network experiments through the router simulation software packet tracer, and tests and analyzes the results.
Key words: IPv4; IPv6; conversion; network experiment; Packet Tracer
目 录