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Intercycle switching (ICS)-based dynamic reconfiguration of p-cycle for dual-failure survivability of WDM networks

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Abstract

Today, the most promising technique used for the survivability of optical transport networks is p-cycle. However, it provides longer restoration path at failure state of the network. The intercycle switching (ICS) is one of the recent approaches that is based on idle p-cycles and is used for shortening the length of restoration path in single-fault model. Utilization of idle p-cycles degrades the inherent dual-failure restorability of single-failure design model of p-cycle, whereas ICS releases the maximum portion of conventional restoration path by utilizing a small segment of the idle p-cycle. Here, the authors proposed a new approach to reconfiguring the released portion of restoration path and unused segment of corresponding idle p-cycle as new cycle(s). In respect of idle p-cycles, the new reconfigured cycle(s) provides more dual-failure restorability in single-failure design of p-cycle. Therefore, the proposed approach mitigates the above-said drawback of ICS and minimizes additional spare capacity requirement for dual-failure survivability.

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Authors and Affiliations

  1. Department of Computer Science and IT, SHIATS, Allahabad, India

    Raghav Yadav & Hari Mohan Singh

  2. Department of Computer Science and Engineering, MNNIT, Allahabad, India

    Rama Shankar Yadav

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  1. Raghav Yadav
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  2. Rama Shankar Yadav
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  3. Hari Mohan Singh
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Correspondence to Raghav Yadav.

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Yadav, R., Yadav, R.S. & Singh, H.M. Intercycle switching (ICS)-based dynamic reconfiguration of p-cycle for dual-failure survivability of WDM networks. Photon Netw Commun 24, 160–165 (2012). https://doi.org/10.1007/s11107-012-0376-9

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  • DOI: https://doi.org/10.1007/s11107-012-0376-9

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