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  • #20286
    Chung Nguyen Hoang

    I’m a newcomer and have been studying VoIP for short time. Thus I
    understand thorouthly some issues.
    How does WFQ allocate the output bandwidth for incoming traffics?
    How do RSVP and IP Precedence affect this mechanism ?
    How does PQ within CBWFQ work?
    Please explain as detailed as you can
    Thank you very much and best regards.


    WFQ uses a flow based analysis on the traffic stream. Flows are identified based on the layer 3 and /or layer 4 parameters.
    The higher the precedence, the more bandwidth it is going to get. Please note that these queueing techniques come into place only during congestion.
    PQ is a method of giving priority service to delay sensitive traffic, so that they are get out of the queue as soon as they come. this minimizes the contention between delay-sensitive and non-delay sensitive packets.

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