QoS - Bandwidth & threshold

[parisdooz12]

Hi,

it is still not clear for me what is the exact effect of a threshold in a queue, in comparison with the bandwidth allocated to the queue.

Here are 2 examples, where I want to class 2 type of traffic, marked CS1 & CS4.

The question is: is there a real difference between these 2 examples?

Example #1: use of 2 queues

- queue #1 shared bandwidth: 20%

- queue #2 shared bandwidth: 10%

- CS4 traffic => queue #1, threshold: 100%

- CS1 traffic => queue #2, threshold: 100%

Example #2: use of 1 queue

- Queue #1 shared bandwidth: 30%

- CS4 traffic => queue #1, threshold: 100%,

- CS1 traffic => queue #1, threshold: 50%

Thanks by advance,

Edit: my understanding is that in Example #2, the CS4 traffic can starve CS1 traffic in case of congestion, which is not the case inexample #1 ... but not sure.

D.

[Joseph W. Doherty]

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Posting

Correct.