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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 10 — May. 15, 2011
  • pp: 1597–1606

Failure Localization for Shared Risk Link Groups in All-Optical Mesh Networks Using Monitoring Trails

János Tapolcai, Pin-Han Ho, Lajos Rónyai, Péter Babarczi, and Bin Wu

Journal of Lightwave Technology, Vol. 29, Issue 10, pp. 1597-1606 (2011)


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Abstract

This paper considers the problem of out-of-band failure localization in all-optical mesh networks using bidirectional monitoring trails (bm-trails), where every possible link set with up to $d$ arbitrary links is considered as a shared risk link group (SRLG). With the SRLG scenario, the bm-trail allocation problem is firstly formulated, which includes the phases of code assignment and bm-trail formation. In the first phase, each SRLG is uniquely coded by assigning each link with a nonadaptive $\bar{d}$-separable combinatorial group testing code. Then, the second phase manipulates a sophisticated yet efficient bm-trail formation process through a novel greedy code-swapping mechanism, such that any SRLG failure can be unambiguously localized by collecting the alarms of the interrupted bm-trails. The algorithm prototype can be found in . Extensive simulation is conducted on hundreds of randomly generated planar topologies to verify the proposed approach in terms of the number of required bm-trails and the computational efficiency. Our approach is compared with previously reported counterparts, by which its merits are further demonstrated.

© 2011 IEEE

Citation
János Tapolcai, Pin-Han Ho, Lajos Rónyai, Péter Babarczi, and Bin Wu, "Failure Localization for Shared Risk Link Groups in All-Optical Mesh Networks Using Monitoring Trails," J. Lightwave Technol. 29, 1597-1606 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-10-1597

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