A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints

HE Rong-xi; ZHANG Zhi-zhong; LI Le-min; WANG Sheng

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A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints

更新时间：2025-07-16

- A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints
- Acta Electronica Sinica Vol. 30, Issue 11, Pages: 1638-1642(2002)
- 作者机构：
  
  电子科技大学宽带光纤传输与通信系统技术国家重点实验室,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN913.24
- Published：2002
- 稿件说明：
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HE Rong-xi, ZHANG Zhi-zhong, LI Le-min, et al. A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints[J]. Acta Electronica Sinica, 2002, 30(11): 1638-1642.
DOI：

HE Rong-xi, ZHANG Zhi-zhong, LI Le-min, et al. A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints[J]. Acta Electronica Sinica, 2002, 30(11): 1638-1642. DOI：

摘要

本文研究了IP/MPLS over WDM网中

如何建立两条共享风险链路组(SRLG)分离的标记交换路径(LSP)问题

提出一种新的基于SRLG分离的共享通路保护算法.该算法既可以保证用户业务的可靠性要求

同时又能够有效提高全网的资源利用率

从而大大降低全网LSP建立请求的阻塞率.本文还对所提算法进行了仿真研究

并给出了仿真结果.

Abstract

Different Shared Risk Link Groups(SRLG)identifiers can be assigned to each link by network administrator in optical Traffic Engineering(TE)with GMPLS to satisfy connection's reliability requirement.A dependable connection can be achieved by establishing two SRLG-disjoint paths.A new routing algorithm for shared path-protection based on SRLG-disjoint is presented in this paper.It provides the same level of protection against single SRLG failure as dedicated path-protection scheme.Moreover it is superior to dedicated path-protection scheme in network utilization.Network performance

based on dynamic traffic with different load

is investigated via simulations.The results show that the scheme can improve the performance of the network significantly.

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Related Author

HE Rong-xi

WEN Hai-bo

Related Institution

College of Information Engineering,Dalian Maritime University,Dalianh

Research and Innovation Center,Alcatel Shanghai Bell Corporation

College of Information EngineeringDalian Maritime UniversityDalianhLiaoning 116026China

Research and Innovation CenterAlcatel Shanghai Bell CorporationShanghai 201206China

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