Dynamic integrated path-protection algorithms in IP over WDM networks under shared-risk-link-groups constraints

Rongxi He; Lemin Li; Sheng Wang

doi:10.1117/12.482449

9 September 2002 Dynamic integrated path-protection algorithms in IP over WDM networks under shared-risk-link-groups constraints

Rongxi He, Lemin Li, Sheng Wang

Author Affiliations +

Proceedings Volume 4910, Optical Networking II; (2002) https://doi.org/10.1117/12.482449
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China

Abstract

The Shared Risk Link Groups (SRLG) concept is an extension of physical-disjoint, e.g. link/node-disjoint. It is defined as a group of links that share a common risk component whose failure can potentially cause the failure of all the links in the group. SRLG can be identified by a SRLG identifier. Different SRLG identifiers can be assigned to each link by network administrator in optical Traffic Engineering (TE) to satisfy connection's reliability requirement. A dependable connection can be achieved by establishing two SRLG-disjoint paths. A new dynamic integrated 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.

Citation Download Citation

Rongxi He, Lemin Li, and Sheng Wang "Dynamic integrated path-protection algorithms in IP over WDM networks under shared-risk-link-groups constraints", Proc. SPIE 4910, Optical Networking II, (9 September 2002); https://doi.org/10.1117/12.482449

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