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A Pre-Planned Local Repair Restoration Strategy for Failure Handling in Optical Transport Networks

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Abstract

Automatic provisioning and recovery of lightpaths with selectable traffic engineering policies are considered basic features of near future optical transport networks (OTN). Worldwide researchers recognize generalized multi-protocol label switching (GMPLS) architecture as the viable control plane solution to achieve these issues in OTN. Growing effort is ongoing to find new recovery models for handling failure conditions in the networks, trying to set up alternative strategies to classical heavy-cost SDH/SONET protection techniques. In this paper, a pre-planned local repair recovery strategy is described. Allocation of primary paths is provided using the interference concept, in order to set a threshold between resources dedicated to working paths and those allocable for local backups in case of failure. Tests of the strategy are shown for a sample national optical transport network, aimed at valuing local-repair recovery times at different failure location and seriousness.

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Authors and Affiliations

  1. Department of Information Engineering, University of Pisa via Diotisalvi 2, 56126, Pisa, Italy

    Gino Carrozzo, Stefano Giordano, Marco Menchise & Michele Pagano

Authors
  1. Gino Carrozzo
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  2. Stefano Giordano
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  3. Marco Menchise
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  4. Michele Pagano
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Carrozzo, G., Giordano, S., Menchise, M. et al. A Pre-Planned Local Repair Restoration Strategy for Failure Handling in Optical Transport Networks. Photonic Network Communications 4, 345–355 (2002). https://doi.org/10.1023/A:1016020231769

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  • DOI: https://doi.org/10.1023/A:1016020231769

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