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Proceedings Paper

Survivable RWA considering differentiated reliability and dynamic link availability in WDM mesh networks
Author(s): Yonggang Li; Lemin Li; Yaohui Jin; Wei Guo
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Paper Abstract

We address the problem of routing and wavelength assignment (RWA) considering differentiated reliability (DiR) in WDM mesh networks. The backup resource can be shared by the primary lightpaths. However, both the primary-backup sharing and the different levels of fault tolerance requirement have never been considered together in the literature. In the paper, we consider the dynamic character of the link availability, which is caused by primary-backup sharing. Moreover, the priority of traffic is considered in the paper. The paper focuses on routing under dynamic availability of wavelength resource while the requested reliability of traffic has to be met, using the modified shortest path algorithm. A layered availability model is established based on wavelength layered graph model. Using this model, we propose a new algorithm called dynamic layered availability (DLA) algorithm. We evaluate the performance of the proposed algorithm on the NSFNET.

Paper Details

Date Published: 5 December 2005
PDF: 9 pages
Proc. SPIE 6022, Network Architectures, Management, and Applications III, 60222A (5 December 2005); doi: 10.1117/12.636594
Show Author Affiliations
Yonggang Li, Shanghai Jiao Tong Univ. (China)
Lemin Li, Univ. of Electronic Science and Technology of China (China)
Yaohui Jin, Shanghai Jiao Tong Univ. (China)
Wei Guo, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 6022:
Network Architectures, Management, and Applications III
Kwok-wai Cheung; Gee-Kung Chang; Guangcheng Li; Ken-Ichi Sato, Editor(s)

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