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Embedding Resilience in Core ATM Networks

  • Paul Veitch
Part of the The International Series in Engineering and Computer Science book series (SECS, volume 557)

Abstract

With the increased deployment of ATM in wide area networks, it is imperative to embed resilience mechanisms in the network elements to mitigate the impact of outages caused by cable breaks and node failures. Although SDH network functionality can be exploited to provide resilient transport of ATM connections, this adds a cost overhead to the overall network design. Furthermore, ATM-layer faults such as ATM switch failures will not be detected by fault-monitoring procedures executed within the SDH layer. It is thus crucial that resilience mechanisms are embedded in the ATM layer. Since user requirements vary from service to service, it is highly likely that different customers will demand variable levels of resilience. For example, mission-critical business-oriented data services will rely on virtually fault-transparent service, whereas residential customers may tolerate breaks in service as long as they do not occur frequently or last a long time. Fortunately, as this article explains, different ATM restoration mechanisms are possible which suit varied customer requirements.

Keywords

ATM Resilience Self-healing Broadband 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Paul Veitch
    • 1
  1. 1.Advanced Communications EngineeringIpswichEngland, UK

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