Performance optimized and configurable state based heuristic for the classification of real-time transport protocol traffic
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United States of America Patent
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Jun 23, 2015
Grant Date -
Dec 20, 2012
app pub date -
Jun 20, 2011
filing date -
Jun 20, 2011
priority date (Note) -
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Abstract
A probe receives a first packet over a network on a port. A sequence number and synchronization source identifier (SSRC) associated with the first packet are identified. The probe receives a subsequent packet and a sequence number and SSRC associated with the subsequent packet are determined. The probe determines whether the SSRC associated with first packet and the SSRC associated with the subsequent packet match. Additionally, the probe determines whether the sequence number associated with the subsequent packet is within an acceptable range of values related to the sequence number associated with the first packet. Additionally, the probe calculates the time interval between reception of the packets. The probe classifies traffic on the port as RTP or non-RTP traffic based on analysis of the SSRCs, sequence numbers and time intervals.
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