VPLS网络中的快速重路由机制

摘要

VPLS network as a new layer 2 VPN technology has huge prospect in large-scale MAN. With the popularity of high-quality services in MAN such as next generation network (NGN) and network TV (IPTV), it demand the increasing reliability in the network. This paper will introduce the basic model of VPLS network and its characteristic. Then an implementation of protecting VPLS network important link or node with the FRR of MPLS traffic engineering are presented to improve the quality of service, reduce the packet dropout. And also the principle of FRR and the process of traffic switching will be introduced in detail. At last, the result of experimentation is provided.%VPLS网络作为一种新型二层VPN技术,在大型城域网中的应用前景巨大.随着下一代网络(NGN)、网络电视(IPTV)等高质量业务在城域网中的流行,对网络可靠性的需求越来越高.介绍了VPLS网络的基本模型与技术特点,并提出结合MPLS流量工程的快速重路由(FRR)机制,对VPLS网络中关键链路或节点进行保护的方案,以提高服务质量,减少数据丢失,详细阐述了FRR的实现原理和在实际组网中的部署过程,并通过实验对方案进行了测试验证.