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Efficient topology failure detection in SDN networks

  • US 9,742,648 B2
  • Filed: 10/27/2015
  • Issued: 08/22/2017
  • Est. Priority Date: 03/23/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a Software Defined Networking (SDN) application running on an SDN controller, one or more user-defined parameters for configuring fault detection on a path between first and second network devices, the one or more user-defined parameters including a first parameter indicating how often probe packets should be sent out along the path and a second parameter indicating a threshold for determining when the path has become nonoperational;

    transmitting, by the SDN application, a first message to the first network device, the first message instructing the first network device to begin sending probe packets to the second network device at a rate determined by the first parameter; and

    transmitting, by the SDN application, a second message to the second network device, the second message instructing the second network device to monitor for the probe packets sent by the first network device and to notify the SDN application when the threshold indicated in the second parameter is exceeded.

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