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Dynamic control channel establishment for software-defined networks having centralized control

  • US 9,596,169 B2
  • Filed: 06/30/2015
  • Issued: 03/14/2017
  • Est. Priority Date: 12/18/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a centralized controller, a discover message originating from a network node, wherein the discover message includes an intermediate node list that specifies a plurality of network nodes the discover message traversed from the network node to an edge node;

    determining, by the centralized controller and based on the plurality of nodes specified by the discover message, a path from the edge node to the network node;

    allocating, by the centralized controller, each of a plurality of Multi-protocol Label Switching (MPLS) labels to a respective outgoing interface of each of the plurality of network nodes; and

    outputting, by the centralized controller, one or more control messages for configuring the network node, wherein the control messages are encapsulated within a label stack comprising the allocated plurality of labels.

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