Implementation of Anycast Service with Multicast Tree
Xiao Wang · 2007
The existing designs for providing Anycast services are either to confine each Anycast group to a preconfig- ured 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 Anycast tree in this paper.Since 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 accompli- shes the distributed maintenance and transaction of Anycast service request and the information on Anycast tree so it fulfills the load balance.This paper deeply analyzes and discusses the feasibility and validity of this communication mod- el,and argues that is supports the large-scale Anycast group.