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Mechanism for automatic protection switching in a router

  • US 6,975,587 B1
  • Filed: 08/25/2000
  • Issued: 12/13/2005
  • Est. Priority Date: 08/25/2000
  • Status: Expired due to Fees
First Claim
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1. A method for protecting a route from an active line card in a first router having a plurality of line cards to an active line card in a second router having a plurality of line cards comprising:

  • providing a protection line card in the first router in connection with a protection line card in the second router;

    detecting a failure of the active line card in the first router;

    revising protection association information stored in the plurality of line cards of the first router such that messages directed through a fabric of the first router to the active line card in the first router are also directed through the fabric to said protection line card; and

    revising protection association information stored in the plurality of line cards of the second router such that messages directed through a fabric of the second router to the active line card in the second router are also directed to said protection line card in the second router.

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