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Routing in All-Optical Label Switched-based networks with small label spaces

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2 Author(s)
Donado, F.S. ; Warsaw Univ. of Technol., Warsaw ; Moulierac, J.

With the development of All-optical label switching (AOLS) network, nodes are capable of forwarding labeled packets without performing optical-electrical-optical (OEO) conversions, speeding up the forwarding. However, this new technology also brings new constraints and, consequently, new problems have to be adressed. We study in this paper the problem of routing a set of demands in such a network, considering that routers have limited label space, preventing from the usage of label swapping techniques. Label stripping is a solution that ensures forwarding, concerning these constraints, of all the paths at expenses of increasing the stack size and wasting bandwidth. We propose an intermediate feasible solution that keeps the GMPLS stack size smaller than label stripping, in order to gain bandwidth resources. After proposing an heuristic for this problem, we present simulations that show the performance of our solution.

Published in:

Optical Network Design and Modeling, 2009. ONDM 2009. International Conference on

Date of Conference:

18-20 Feb. 2009

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