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Proceedings Paper

Capacity design studies of span-restorable mesh transport networks with shared-risk link group (SRLG) effects
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Paper Abstract

We study the total capacity requirements of span-restorable mesh network designs as the percentage of all possible dual failure combinations incident on a common node is increased. Our interest is in questions such as: Are there any guidelines or insights as to how many such SRLGs can be sustained before the capacity penalty becomes severe? Can we diagnose which SRLGs are the most limiting to overall network efficiency? When would it be worthwhile to take physical measures to eliminate a certain SRLG? In addressing these questions we provide a design formulation and procedure for planning any span-restorable network for a known set of SRLGs. One finding of interest is that if all dual failure combinations incident to a common node are allowed for in the design, then nearly all other dual span failure combinations (any two spans in the network) will also be restorable. We also produce experimental results showing how total capacity depends on the relative number or frequency of co-incident SRLGs and quantify how the type of SRLG will impact design costs.

Paper Details

Date Published: 3 July 2002
PDF: 14 pages
Proc. SPIE 4874, OptiComm 2002: Optical Networking and Communications, (3 July 2002); doi: 10.1117/12.475308
Show Author Affiliations
John Doucette, TRLabs. and Univ. of Alberta (Canada)
Wayne D. Grover, TRLabs. and Univ. of Alberta (Canada)

Published in SPIE Proceedings Vol. 4874:
OptiComm 2002: Optical Networking and Communications
Nasir Ghani; Krishna M. Sivalingam, Editor(s)

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