一种基于RSVP-TE的MPLS网络FRR机制  

A FRR Mechanism Based on RSVP-TE in MPLS Networks

作　　者：杨雪娇[1] 康京山[1] 刘玉贞[1] 崔丽珍[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2009年第6期4-7,共4页Radio Engineering

摘　　要：快速重路由FRR用于MPLS网络故障时的修复,能够降低故障导致的传输时延和丢包率,保障业务的服务质量,满足网络中有特殊需求的应用。介绍了基于RSVP-TE协议的FRR原理,重点阐述了通过RSVP-TE交互,在MPLS网络中对重要链路或节点预先建立备份路径,检测到链路或节点故障后进行修复的解决方案,给出了具体实现框架,介绍了备份路径的建立过程以及检测故障后的处理过程。介绍了该机制在网络中的典型应用和前景。Fast reroute （MPLS-FRR） mechanism is used to restore MPLS networks in case of network failures. This mechanism can reduce transmission delay and packet dropout, thereby guaranteeing the Quality of Service （QoS） of the traffic and satisfying the application y with special demand in MPLS networks. It, depending on the RSVP-TE protocol, sets up backup paths in MPLS n.etwork beforehand to protect important links or nodes, and recovers the network when detecting the link or node failures. The principle of FRR based on RSVP-TE protocol is introduced in this paper, and the process of actual implementation and the typical applications and prospects of the mechanism used in networks are also descibed.

关 键 词：快速重路由FRR RSVP-TE MPLS网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]