Campus Units
Electrical and Computer Engineering
Document Type
Article
Conference
OptiComm 2002: Optical Networking and Communications
Publication Version
Published Version
Publication Date
7-3-2002
Journal or Book Title
OptiComm 2002: Optical Networking and Communications
Volume
4874
First Page
13
Last Page
24
DOI
10.1117/12.475299
Conference Title
OptiComm 2002: Optical Networking and Communications
Conference Date
July 29-August 1, 2002
City
Boston, MA
Abstract
Most research to date in survivable optical network design and operation, focused on the failure of a single component such as a link or a node. A double-link failure model in which any two links in the network may fail in an arbitrary order was proposed recently in literature. Three loop-back methods of recovering from double-link failures were also presented. The basic idea behind these methods is to pre-compute two backup paths for each link on the primary paths and reserve resources on these paths. Compared to protection methods for single-link failure model, the protection methods for double-link failure model require much more spare capacity. Reserving dedicated resources on every backup path at the time of establishing primary path itself would consume excessive resources. In Ref. 2 and 3, we captured the various operational phases in survivable WDM networks as a single integer programming based (ILP) optimization problem. In this work, we extend our optimization framework to include double-link failures. We use the double-link failure recovery methods available in literature, employ backup multiplexing schemes to optimize capacity utilization, and provide 100\% protection guarantee for double-link failure recovery. We develop rules to identify scenarios when capacity sharing among interacting demand sets is possible. Our results indicate that for the double-link failure recovery methods, the shared-link protection scheme provides 10-15\% savings in capacity utilization over the dedicated link protection scheme which reserves dedicated capacity on two backup paths for each link. We provide a way of adapting the heuristic based double-link failure recovery methods into a mathematical framework, and use techniques to improve wavelength utilization for optimal capacity usage.
Copyright Owner
Society of Photo-Optical Instrumentation Engineers (SPIE)
Copyright Date
2002
Language
en
File Format
application/pdf
Recommended Citation
He, Wensheng; Sridharan, Murari; and Somani, Arun K., "Capacity optimization for surviving double-Link failures in mesh-restorable optical networks" (2002). Electrical and Computer Engineering Conference Papers, Posters and Presentations. 177.
https://lib.dr.iastate.edu/ece_conf/177
Comments
This proceeding is published as He, Wensheng, Murari Sridharan, and Arun K. Somani. "Capacity optimization for surviving double-link failures in mesh-restorable optical networks." In OptiComm 2002: Optical Networking and Communications, vol. 4874, pp. 13-24. International Society for Optics and Photonics, 2002. DOI: 10.1117/12.475299. Posted with permission.