Abstract
Feature Issue on High Availability in Optical Networks
Various resilience schemes have been proposed to allow for fault-tolerant
transport networks. Their common aim is to survive certain failure patterns
such as node or span failures by providing alternative transmission paths.
However, network operators guarantee the resulting network reliability in
terms of service availability to their business customers. A maximum duration
of service disruption per year must not be exceeded. We investigate an optimal
design of resilient network configurations that adapts to end-to-end availability
requirements. We formulate an integer linear program that minimizes the resource
utilization and investigate a case study.
© 2006 Optical Society of America
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