具有多重故障恢复能力的光网络生存性机制  

A Multi-Fault Recovery Survivability Mechanism for Optical Networks

作　　者：曲桦[1] 李增智[1] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710061

出　　处：《北京邮电大学学报》2006年第S1期39-42,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(6047207560572134);国家"863计划"项目(2005AA121540)

摘　　要：为了解决多重故障情况下网络发生故障后能尽快地恢复受影响的业务这一问题,提出了一种具有多重故障恢复能力的光网络生存性机制.针对传统子网路由法存在的问题,给出了相应的改进方案:在子网路由法中考虑了对共享分享链路组的恢复问题;在子网路由法中引入了选路原则.在采用子网路由法的基础上探讨了二次故障的生存性方法,并从有效利用率的角度对所给出的改进方案进行了仿真和分析.From the viewpoint of user and operator,optical networks are in dire need of fault tolerations,especially recovery from multi-fault.A multi-fault recovery survivability mechanism for optical networks was presented.The corresponding improvement solutions for the problem in classical subgraphy routing method from three aspects was provided and analyzed respectively: the shared risk link groups(SRLG) restoration into the subgraph routing method;a routing principle into the subgraph routing method;the second fault restoration method based on the subgraph routing.Simulation results are showed from the point of view of effective utilization.

关 键 词：生存性 故障恢复 光网络 子网路由法 共享风险链路组 

分 类 号：TN929.1[电子电信—通信与信息系统]