Shared-path protection algorithm for joint routing selection in survivable WDM mesh networks

Lei Guo; Hongfang Yu; Lemin Li; Hongbin Luo

doi:10.1117/12.573024

8 February 2005 Shared-path protection algorithm for joint routing selection in survivable WDM mesh networks

Lei Guo, Hongfang Yu, Lemin Li, Hongbin Luo

Proceedings Volume 5626, Network Architectures, Management, and Applications II; (2005) https://doi.org/10.1117/12.573024
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

In this paper, we propose a new shared-path protection approach, called joint routing algorithm (JRA), under shared-risk link group (SRLG) constraints for survivable WDM mesh networks. JRA differs from previous algorithms that are socalled separated routing algorithm (SRA), and can find K path pairs and select an optimal path pair as the result, while SRA can only find a path pair that may be not an optimal routing pair. So, JRA can perform better than SRA. We also study the relationship between the protection switching time and the resource utilization, and suggest a new joint cost function to compute the least-cost path pairs. Under dynamic traffics with different load, the simulation results show that JRA not only has better performances than SRA but also can determine the appropriate tradeoffs between the resource utilization ratio (or blocking ratio) and the protection switching time.

Citation Download Citation

Lei Guo, Hongfang Yu, Lemin Li, and Hongbin Luo "Shared-path protection algorithm for joint routing selection in survivable WDM mesh networks", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); https://doi.org/10.1117/12.573024

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