A Fast Re-Route Method

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Security
Format: PDF
The authors present a method to find an alternate path, after a link failure, from a source node to a destination node, before the interior gateway protocol (e.g., OSPF or IS-IS) has had a chance to reconverge in response to the failure. The target application is a small (up to tens of nodes) regional access sub-network of a service provider's network, which is a typical access scale encountered in practice. They illustrate the method and prove that it will find a path if one exists.
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