CBWFQ question

Unanswered Question
Jun 15th, 2007

Following is quoted from Cisco QOS training material talking about CBWFQ.

It says "the bandwidth assigned to the packets of a class

determines the order in which packets are sent. " How come the bandwidth determines the order of the packets being sent?


Here is the quoted:

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For CBWFQ, the weight for a packet belonging to a specific class is derived from the bandwidth that you

assigned to the class when you configured it. Therefore, the bandwidth assigned to the packets of a class

determines the order in which packets are sent. All packets are serviced fairly based on weight.

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I think that you are reading to far into the material.


Using MQC, the packet must first be classified using class-maps. Then, using policy-maps, the previously defined class-maps are used to determine which queue the packet is assigned to.


I think that it should have said, "the weight of a packet is derived from the bandwidth specified within the priority-map based upon the classification within the class-map".


Is that the clarification that you were looking for?

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