A Communication Model on How to Solve Anycast Scalability in IPv6
IPv6中解决Anycast扩展局限性的一种通信模型

The existing designs for providing Anycast services are either to confine each Anycast group to a preconfigured topological region or to globally distribute routes to individual Anycast groups which causes the routing tables to grow proportionally to the number of all global anycast groups in the entire Internet, both of which restrict and hinder the application and development of Anycast services. A new kind of Anycast communication model is proposed on the basis of Pastry in this paper. For this model achieves dynamic Anycast group and allows Anycast members to freely leave and join Anycast group it radically solves the existing scalability problem. In addition, this model accomplishes the distributed maintenance and transaction of Anycast service request and Anycast tree's information in order to fulfill the load balance. This paper deeply analyzes and discusses the feasibility and validity of this communication model, and argues that it supports the large-scale Anycast group .