IPv6网络中的选播概述  

A Panorama of Anycast in IPv6 Networks

作　　者：孙飞[1] 李之棠[1] 黎耀[1] 

机构地区：[1]华中科技大学网络中心,武汉430074

出　　处：《中国教育网络》2007年第2期4-7,共4页China Education Network

基　　金：国家自然科学基金资助项目(60573120)

摘　　要：Anycast是一种新型的“one-to-one-of-many”的IPv6网络通信模式。Anycast的出现为解决替请求回应最好的服务这个问题提供了可能。因为IPv6的许多未解决问题以及IPv6缓慢的发展速度,在网络层实现Anycast还没有成为现实,但目前关于Anycast的研究越来越多。这篇文章主要讲述在网络层Anycast的一些主要困难,比如全球路由,状态连接等问题,以及一些它们可能的解决方法,包括GIA、来源识别、源路由选项等,并陈述了对选播做的改进。Anycast is a new ＂one-to-one-of-many＂ communication method in IPv6 networks. With this technology, the problem of finding the best server to respond to a request becomes a virtual hOOp. Hindered by unresolved issues and the slow deployment of IPvS, network-layer anycast is still not a reality. However, an increase in interest and research surrounding anycast recently warrants a look at the state and direction of the ideas in this area. This article describes some of the major problems with network-layer anycast taking Global routing, stateful colmection as examples,and their possible solutions, such as GIA, source identification option, source route option, and so on,together with some optimizations that have been developed recently.

关 键 词：ANYCAST 全球路由 状态连接 GIA 来源识别 源路由选项 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]