Automatic protection switching using link-level redundancy supporting multi-protocol label switching

  • US 8,134,917 B2
  • Filed: 07/25/2005
  • Issued: 03/13/2012
  • Est. Priority Date: 12/22/1999
  • Status: Expired due to Fees
First Claim
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1. Apparatus comprising:

  • a backup controller that provides protection switching in the event of a link failure associated with an intermediate routing node that delivers explicitly routed data packets from a source to a destination in a computer network via a plurality of links, including a backup path manager that, for at least one link of the routing node, identifies a backup routing path that is used by the routing node for forwarding affected explicitly routed data packets to the destination in the event of a failure of the at least one link, wherein the backup routing path is determined prior to a failure of the at least one link.

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