摘要： 提出一种在移动IP网络中利用多播技术实现Anycast服务的通信模型，该模型可以根据网络的拥挤情况动态地选择最优Anycast组成员及其动态加入与离开，解决了Anycast现存的扩展性问题，实现了Anycast树自身信息与请求的分布式维护与处理，从而使得负载均衡。在IPv6模拟环境下，实验数据表明通过该模型获取服务(如文件下载服务)的TRT值要比现有移动IP通信模型下获取同样服务的TRT值小，服务质量也有明显的提高。
关键词:
Anycast服务,
移动IP,
树,
多播
Abstract: This paper proposes a new kind of Anycast communication model in mobile IP network. This model can dynamically select the optimal Anycast member according to the current status of network congestion, achieve dynamic Anycast group, allow Anycast members to freely leave and join Anycast group, and solve the existing scalability problem. In addition, this model accomplishes the distributed maintenance and transaction of Anycast service request and Anycast tree’s information so it fulfills the load balance. Experimental data in IPv6 simulation demonstrate that the TRT of one kind of service (for example, file downloading) acquired through this communication model is smaller than the one through the current mobile IP communication model.
Key words:
Anycast service,
mobile IP,
tree,
multicast
中图分类号:
王晓楠;钱焕延. Anycast服务在移动IP网络中的设计与实现[J]. 计算机工程, 2008, 34(7): 120-122.
WANG Xiao-nan; QIAN Huan-yan. Design and Implementation of Anycast Service in Mobile IP Network[J]. Computer Engineering, 2008, 34(7): 120-122.