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Technique for fast activation of a secondary head-end node TE-LSP upon failure of a primary head-end node TE-LSP

  • US 20070280102A1
  • Filed: 06/02/2006
  • Published: 12/06/2007
  • Est. Priority Date: 06/02/2006
  • Status: Active Grant
First Claim
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1. A method for dynamically activating a secondary Traffic Engineering Label Switched Path (TE-LPS) at a secondary head-end node upon failure of a primary TE-LPS in a computer network, the method comprising:

  • establishing the primary TE-LPS having a primary bandwidth (BW) amount from a primary head-end node to a primary tail-end node;

    establishing the secondary TE-LPS having zero BW from the secondary head-end node to a secondary tail-end node;

    monitoring a state of the primary TE-LPS;

    determining a failure of the primary TE-LPS; and

    , in response,substantially immediately adjusting the BW of the secondary TE-LPS to the primary BW amount.

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