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ALTERNATE DOWN PATHS FOR DIRECTED ACYCLIC GRAPH (DAG) ROUTING

  • US 20130128773A1
  • Filed: 01/18/2013
  • Published: 05/23/2013
  • Est. Priority Date: 03/19/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • selecting, for a node N within a computer network that utilizes a directed acyclic graph (DAG) to route packets, a parent node P that is a parent to node N in the DAG;

    determining a grandparent node GP within the computer network that is a parent of the parent node P in the DAG;

    selecting an alternate parent node P′

    within the computer network that has con-nectivity to the grandparent node GP and the node N; and

    establishing a sibling connection within the computer network between the parent node P and the alternate parent node P′

    , wherein the sibling connection provides a path for reaching prefixes reachable via the node N.

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