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Proceedings Paper

Near-optimal design of WDM dual-ring with dual-crossconnect architecture
Author(s): Farid Farahmand; Andrea F. Fumagalli; Marco Tacca
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Paper Abstract

Survivability to faulty components and simplified management drive the practical deployment of ring-based WDM networks. In many applications, location constraints and user scalability require that multiple rings are interconnected to form a single large network. Survivability of connections spanning across multiple rings is then achieved by resorting to dual-interconnection, i.e., two (or more) nodes are available to crossconnect the inter-ring traffic between two neighboring rings. By providing one backup crossconnect-node to be used in case of failure of the primary crossconnect-node, network wide connectivity is thus guaranteed also in presence of any faulty node. This paper addresses the problem of optimally provisioning both bandwidth and crossconnect ports required to satisfy a set of traffic demands in a dual-interconnected WDM dual-ring network architecture. The problem is solved under two design scenarios. In the first scenario, priority is given to the minimization of the number of wavelengths. In the second scenario, priority is given to the balancing of traffic between the crossconnect-nodes. Two efficient approaches are proposed that provide a near-optimal solution in each considered scenario. The discussed performance comparison provides the network designer with a quantitative assessment of the trade-off between the two approaches.

Paper Details

Date Published: 3 July 2002
PDF: 12 pages
Proc. SPIE 4874, OptiComm 2002: Optical Networking and Communications, (3 July 2002); doi: 10.1117/12.475305
Show Author Affiliations
Farid Farahmand, Alcatel USA, Inc. (United States)
Andrea F. Fumagalli, The Univ. of Texas at Dallas (United States)
Marco Tacca, The Univ. of Texas at Dallas (United States)


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

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