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Proceedings Paper

The study of shared-path protection algorithms with SRLG constraint in WDM mesh network
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Paper Abstract

Network survivability has been one of the key topics when researching the optical network. For network survivability, select two routes should be selected that are disjoint when computing the working route and protecting route or restoring route. The purpose of the shared-protection algorithms under Shared Risk Link Group (SRLG) constraint is to search two routes that are disjoint from SRLG. Two shared-protection algorithms under Shared Risk Link Group (SRLG) constraint will be presented; they are KWFF and IFF algorithms. In the KWFF algorithm, the K-Shortest- Path (KSP) strategy is introduced on every wavelength plane to search usable resources adequately in the network, the working route and protecting route on every wavelength plane can be selected from the backup route set. And with the iterative strategy and the double weights of link, IFF algorithm could avoid the trap that can result in deteriorating the network performance. The simulation and results analysis will be in terms of two parts, the one is from the network performance, and other one is from the resources utilization. From the simulation results, it will be found that compared with other algorithms, KWFF and IFF algorithms could decrease the block probability and improve the performance in the network.

Paper Details

Date Published: 19 November 2007
PDF: 8 pages
Proc. SPIE 6784, Network Architectures, Management, and Applications V, 67840Z (19 November 2007); doi: 10.1117/12.743718
Show Author Affiliations
Pei Zhang, Beijing Univ. of Posts and Telecommunications (China)
Yanlei Zheng, Beijing Univ. of Posts and Telecommunications (China)
Yu Deng, Beijing Univ. of Posts and Telecommunications (China)
Wanyi Gu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 6784:
Network Architectures, Management, and Applications V
Jianli Wang; Gee-Kung Chang; Yoshio Itaya; Herwig Zech, Editor(s)

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