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An Overview of Routing Methods in Optical Burst Switching Networks

Pedro, J. M. ; Pires, J. J. O. ; Monteiro, P.

Optical Switching and Networking Vol. 7, Nº 2, pp. 41 - 53, April, 2010.

ISSN (print): 1573-4277
ISSN (online):

Scimago Journal Ranking: 0,31 (in 2010)

Digital Object Identifier: 10.1016/j.osn.2010.01.001

In this article we present a survey of routing methods in Optical Burst Switching (OBS) networks. We begin with a description of routing approaches and follow the discussion with a detailed classification of routing algorithms in OBS. Afterwards, we discuss common OBS network loss models that are frequently used in routing optimization. As examples of such application, we present a linear and a nonlinear formulation of a multi-path routing optimization problem with an indication on convenient resolution methods. Presented algorithms are appropriate for proactive load balancing routing and aim at the improvement of network-wide burst loss performance. To compare performance results, both methods are evaluated by simulation in a set of unified network scenarios.