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Performance measurement in a network supporting multiprotocol label switching (MPLS)

  • US 8,638,778 B2
  • Filed: 09/11/2009
  • Issued: 01/28/2014
  • Est. Priority Date: 09/11/2009
  • Status: Active Grant
First Claim
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1. A computer implemented method comprising:

  • using at least one digital processing unit;

    receiving a data packet at a router, the data packet including a tracking indicator, a tracking portion, and a payload;

    extracting the tracking indicator from the data packet and identifying the router as supporting hop by hop tracking;

    adding a timestamp to the tracking portion to form an amended data packet;

    identifying a next node in a transmission path as not supporting hop by hop tracking, the transmission path including the router among other nodes;

    revising the transmission path responsive to the identifying the next node as not supporting hop by hop tracking, the revising the transmission path including generating a revised transmission path including nodes that support hop by hop tracking including the router and the next router;

    transmitting the amended data packet with the added timestamp to the next router.

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