北京邮电大学学报

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北京邮电大学学报

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具有多重故障恢复能力的光网络生存性机制

曲桦 李增智   

  1. 西安交通大学电信学院 西安 710061
  • 收稿日期:2006-01-05 修回日期:1900-01-01 出版日期:2006-05-30 发布日期:2006-05-30
  • 通讯作者: 曲桦
  • 基金资助:
     

A Multi-fault Recovery Survivability Mechanism for Optical Networks

Qu Hua, Li Zengzhi   

  1. Xi’an Jiaotong University, 710061 Xi’an China
  • Received:2006-01-05 Revised:1900-01-01 Online:2006-05-30 Published:2006-05-30
  • Contact: Qu Hua
  • Supported by:
     

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.

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

Abstract: From the viewpoint of user and operator, optic
al networks are in dire need of fault tolerations, especially recovery from mult
ifault. A multifault recovery survivability mechanism for optical networks w
as presented. The corresponding improvement solutions for the problem in classic
al subgraphy routing method from three aspects was provided and analyzed respect
ively: 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.

Key words: Survivability, fault recovery, optical networks, subgraph routing, Shared risk link group

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