Use of DPI to extract and forward application characteristics

  • US 8,165,024 B2
  • Filed: 04/03/2008
  • Issued: 04/24/2012
  • Est. Priority Date: 04/03/2008
  • Status: Active Grant
First Claim
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1. A method of processing packets sent from a source node to a destination node, the method comprising:

  • receiving a packet sent from the source node to the destination node;

    associating the packet with an active flow by accessing information in the packet;

    performing deep packet inspection (DPI) to identify an application associated with the active flow by analyzing at least one other packet;

    determining a classification for the packet based on characteristics of the identified application;

    inserting information identifying the classification into the packet;

    forwarding the packet, including the information identifying the classification, towards the destination node such that a downstream device is enabled to perform processing of the packet by extracting the classification from the packet.

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