IPv6网络中PIM协议的优化设计与实现

发布时间：2018-08-02 13:15

【摘要】：伴随着信息化的普及,互联网上涌现了许多多媒体视频应用。这些应用运行需要耗费大量的网络资源,是造成网络拥塞的主要原因之一。组播技术的实现可以提高网络资源的利用率,减少了网络出现拥塞的可能性。组播系统是一个开放的系统,由于组播系统缺乏对安全性、流量管理以及可靠性等方面的有效支持,因此比其他通信系统更容易受到攻击。组播安全性是阻碍组播发展的一个主要原因,也一直是业界讨论的热点问题。IPv6是下一代互联网的标准网络协议,在服务质量,传输安全等方面相比IPv4有了较大优化。IPv6组播技术的应用,极大地改善了传送数据的质量和效率。IPv4向IPv6过渡已经成为必然趋势。本文首先讨论了组播技术国内外现状,以及IPv6技术现状,并分析了IPv6组播当前面临的问题。其次,详细介绍了组播协议PIM的原理及在其在IPv6下的实现机制,并利用Tornado开发平台,在烽火网络USP2.0软件开发平台上搭建了IPv6组播通信系统,该系统实现了组播消息的通信。随后,针对组播路由协议PIM提出了三点优化：改善了协议安全性；优化了协议注册流程,避免无用数据流量在局域网中转发；优化数据转发流程,避免组播数据在网段内的重复转发。最后,测试验证组播系统的功能,以及所提出优化方案的可行性。并分析了当前IP组播技术仍需完善优化的地方,总结展望了IP组播进一步的研究方向。
[Abstract]:With the popularization of information technology, many multimedia video applications have emerged on the Internet. These applications need to consume a lot of network resources, which is one of the main causes of network congestion. The implementation of multicast technology can improve the utilization of network resources and reduce the possibility of network congestion. Multicast system is an open system. Multicast system is more vulnerable than other communication systems because of its lack of effective support for security, traffic management and reliability. Multicast security is a major obstacle to the development of multicast, and it has been a hot topic in the industry. IPv6 is the standard network protocol of the next generation Internet. Compared with IPv4, IPv6 multicast technology has been widely used in transmission security. It has become an inevitable trend that the quality and efficiency of data transfer from IPv4 to IPv6 has been greatly improved. This paper first discusses the current situation of multicast technology at home and abroad, and the current situation of IPv6 technology, and analyzes the current problems faced by IPv6 multicast. Secondly, the principle of multicast protocol PIM and its implementation mechanism under IPv6 are introduced in detail, and the IPv6 multicast communication system is built on the USP2.0 software development platform of beacon network using Tornado development platform, which realizes the communication of multicast message. Then, three optimizations are proposed for multicast routing protocol (PIM): improved protocol security; optimized protocol registration process to avoid unwanted data traffic forwarding in the LAN; optimized data forwarding process; Avoid repeated forwarding of multicast data in the network segment. Finally, the function of multicast system and the feasibility of the proposed optimization scheme are tested and verified. At the same time, the paper analyzes the current IP multicast technology needs to be improved and optimizes, and summarizes and prospects the further research direction of IP multicast.
【学位授予单位】：武汉邮电科学研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.04

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