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Improving Recovery in GMPLS-based WSON through Crank-back Re-routing

Authors:
Edgard Jamhour
Manoel Penna

Keywords: crank-bak re-routingt; make-before-brake; routing and wavelength assignment

Abstract:
This paper defines and evaluates an unplanned technique based on Generalized Multi-Protocol Label Switching (re-routing) to restore lightpaths interrupted by failures in wavelength switched optical network. Compared to the pre-planned recovery techniques, the re-routing approach may significantly save network resources, but may suffer from longer recovery times and even fail to recover lightpaths, due to slow convergence of the information transported by Interior Gateway Protocol. To address this issue, we have used the crank-back extensions proposed by IETF, combined with a make-before-break strategy that re-uses resources from the broken lightpath to setup a recovery lightpath. We present an evaluation that permits to conclude about the performance of the proposed approach.

Pages: 124 to 130

Copyright: Copyright (c) IARIA, 2014

Publication date: February 23, 2014

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-318-6

Location: Nice, France

Dates: from February 23, 2014 to February 27, 2014