一种基于多QoS约束的T-MPLS恢复算法  

A multi-QoS constrained T-MPLS recovery algorithm

作　　者：曲桦[1] 毛宏宝[1] 祁云磊[1] 

机构地区：[1]西安邮电学院,陕西西安710061

出　　处：《光通信研究》2008年第6期9-13,20,共6页Study on Optical Communications

基　　金：国家自然科学基金资助项目(60572134);国家"八六三"计划资助项目(2007AA01Z254)

摘　　要：文章在分析传统算法存在的问题的基础上,提出一种基于多服务质量(QoS)约束的传送多协议标签交换(T-MPLS)恢复算法(MQCTR);为提高恢复路径建立的成功率,结合约束路由思想,提出了基于多QoS门限约束的路由机制;以网状网为例,对算法性能进行了仿真分析。该算法不仅支持多种恢复模式,而且具备多业务区分功能,对提高运营级T-MPLS网络的生存性和健壮性具有重要意义。This article presents a Multi-QoS Constrained（MQCTR） T-MPLS recovery algorithm on the basis of the analysis of the limitations of the traditional algorithms.In order to enhance the success rate of recovery path set-up,it sets forth a multi-QoS-threshold constrained routing mechanism in line with the constrained routing idea.Finally,it applies,as an example,this algorithm in a mesh network and performs simulation and analysis of its performances.The results show that this algorithm does not only supports multiple recovery modes,but also has multiple service differentiation functions,which is of major significance to enhancing the survivability and robustness of carrier-level T-MPLS networks.

关 键 词：传送多协议标签交换 生存性 故障恢复 约束路由 

分 类 号：TN915[电子电信—通信与信息系统]