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PERFORMANCE OPTIMIZED AND CONFIGURABLE STATE BASED HEURISTIC FOR THE CLASSIFICATION OF REAL-TIME TRANSPORT PROTOCOL TRAFFIC

  • US 20120320767A1
  • Filed: 06/20/2011
  • Published: 12/20/2012
  • Est. Priority Date: 06/20/2011
  • Status: Active Grant
First Claim
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1. A method for classifying network traffic, the method comprising:

  • receiving a first packet of network traffic on a port;

    determining a synchronization source identifier (SSRC) associated with the first packet and a first sequence number associated with the first packet;

    receiving a subsequent packet of network traffic on the port;

    determining a synchronization source identifier (SSRC) and a second sequence number associated with the subsequent packet;

    determining whether the SSRC associated with the subsequent packet matches the SSRC associated with the first packet;

    determining whether the second sequence number associated with the subsequent packet is within an acceptable range of sequence number values related to the first sequence number;

    calculating an interval time between reception of the first packet and reception of the subsequent packet;

    determining whether the interval time is within an acceptable range of time values; and

    classifying traffic on the port based on whether the SSRC associated with the first packet matches the SSRC associated with the subsequent packet, the second sequence number associated with the subsequent packet is within the acceptable range of sequence number values, and the interval time is within the acceptable range of time values.

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