quality of service

Unanswered Question
Dec 17th, 2008

Hi all, can anyone please explain to me the link between the qos values you put in and the queing methods used? are they totally seperate?

I have this problem too.
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Laurent Aubert Thu, 12/18/2008 - 08:07

Hi Carl,

QoS values is the way to identified your packets. It's usually based on DSCP field.

Packets marked with the same QoS value will have the same QoS treatment as they belong to the same Class of Service.

I suppose when you said queuing, you refer to scheduling which decides which packet should be transmitted on the wire. WFQ, CBWFQ, LLQ, MDRR are examples of Cisco implementation of scheduling algorithm.

So you're right. QoS values are used for Classification and scheduling algo is part of congestion management


Hope this helps




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