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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 8 — Aug. 1, 2012
  • pp: 628–638

M-Burst: A Framework of SRLG Failure Localization in All-Optical Networks

Mohammed L. Ali, Pin-Han Ho, János Tapolcai, and Basem Shihada  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 4, Issue 8, pp. 628-638 (2012)
http://dx.doi.org/10.1364/JOCN.4.000628


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Abstract

Fast and unambiguous failure localization for shared risk link groups (SRLGs) with multiple links is essential for building a fully survivable and functional transparent all-optical mesh network. Monitoring trails (m-trails) have been proposed as an effective approach to achieve this goal. However, each m-trail traverses through each link by constantly taking a wavelength channel, causing a significant amount of resource consumption. In this paper, a novel framework of all-optical monitoring for SRLG failure localization is proposed. We investigate the feasibility of periodically launching optical bursts along each m-trail instead of assigning it a dedicated supervisory lightpath to probe the set of fiber segments along the m-trail, aiming to achieve a graceful compromise between resource consumption and failure localization latency. This paper defines the proposed framework and highlights the relevant issues regarding its feasibility. We provide theoretical justifications of the scheme. As a proof of concept, we formulate the optimal burst scheduling problem via an integer linear program (ILP) and implement the method in networks of all possible SRLGs with up to d=3 links. A heuristic method is also proposed and implemented for multiple-link SRLG failure localization, keeping all the assumptions the same as in the ILP method. Numerical results for small networks show that the scheme is able to localize single-link and multiple-link SRLG failures unambiguously with a very small amount of failure localization latency.

© 2012 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1155) Fiber optics and optical communications : All-optical networks

ToC Category:
Research Papers

History
Original Manuscript: December 6, 2011
Revised Manuscript: April 26, 2012
Manuscript Accepted: May 14, 2012
Published: July 27, 2012

Citation
Mohammed L. Ali, Pin-Han Ho, János Tapolcai, and Basem Shihada, "M-Burst: A Framework of SRLG Failure Localization in All-Optical Networks," J. Opt. Commun. Netw. 4, 628-638 (2012)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-4-8-628

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