IPv6中Anycast服务在应用层的分析与设计(英文)  

Analysis and Design of Anycast Service on Application Layer in IPv6

作　　者：王晓楠[1] 钱焕延[1] 

机构地区：[1]南京理工大学计算机与技术学院

出　　处：《广西师范大学学报（自然科学版）》2007年第2期21-25,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：Applied Fundamental Research Foundation of Commission of Science Technology and Industry for National Defense(JI300D004)

摘　　要：IPv6以两种方式提供Anycast服务:一种是将Anycast组成员限制在共享一个地址前缀的特殊拓扑区内;另一个是将Anycast地址表示的共享某个特性的结点组分散在互联网的各个地方,这种方式使得路由表会随全球Anycast组数成比例增长,从而构成了Anycast的扩展性问题。提出了一种在应用层实现Anycast服务的解决方案,此方案不仅解决了Anycast服务的扩展性问题,同时也解决了IP层实现Anycast服务所存在的一些其他问题,如路由表膨胀、TCP通信失败等,同时分析和讨论了该方案的可行性及有效性。The existing designs for providing Anycast services are either to confine each Anycast group to a preconfigured topological region,which may bring scalability problem,or to distribute members of Anycast groups to global regions,which may cause the routing tables to grow proportionally to the number of all global Anycast groups in the entire Internet. Therefore,both of which restrict and hinder the application and development of Anycast services. A new kind of Anycast communication model is proposed and it solves some existing problems,such as scalability and communication errors between clients and servers which may be caused by performing Anycast services on application layer or IP layer. The Anycast communication model is analyzed and discussed,and its feasibility and validity are proved.

关 键 词：IPV6 ANYCAST UNICAST 路由器 

分 类 号：TN915.04[电子电信—通信与信息系统]