支持多故障恢复的MPLS快速重路由  

Fast recovery from multi-failure patterns in MPLS networks

作　　者：任金秋[1] 张建辉[1] 汪斌强[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,河南郑州450002

出　　处：《计算机工程与设计》2008年第15期3861-3863,3903,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2004AA103130)

摘　　要：分析了传统MPLS快速重路由应对多故障环境的不足,提出一种支持MPLS域并发多故障时快速恢复的重路由策略。通过有限洪泛故障信息,使本地修复的节点掌握有限范围内节点、链路的可用性信息,并通过建立主、从备份路径,保证MPLS层有效的恢复及较快的切换速度。理论分析及实验结果表明了该方法的可行性和有效性。To adapt traditional MPLS fast reroute mechanism to deal with multiple element failures in MPLS networks while overcoming its weakness. It is achieved by flooding failure information in a controlled range to make the point of local recovery know the availability of links and routers in that range. Primary and secondary bypass tunnels are pre-computed and signaled for rapidly traffic switching and effective restoration. The theoretic analysis and experimental results show that the method is feasible and effective.

关 键 词：多协议标记交换 多故障 快速重路由 洪泛 备份路径 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]