Impacts of Hierarchy in Ethernet Ring Networks on Service Resiliency

In transport networks, a multi-ring architecture is very useful to facilitate network planning and to design and provide more resilient services for customers. Unlike traditional synchronous optical network multi-rings, the service resiliency of Ethernet-based multi-rings is significantly impacted by the ring hierarchy because a link or node failure in a certain level ring triggers filtering database flush actions in all higher level rings as well as in the ring with the failure, and consequently a large amount of duplicated data frames may be flooded. In this paper, the authors investigate how the ring hierarchy impacts the service resiliency of multi-ring networks.

Provided by: ETRI Journal Topic: Networking Date Added: Apr 2012 Format: PDF

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