An IOM3 card of a Nokia7750 SR is enabled with the default scheduler and the policy shown in the image is applied to an access port on this card. In which order will packets be scheduled out of the queues?
An IOM3 card of a Nokia7750 SR is enabled with the default scheduler and the policy shown in the image is applied to an access port on this card. In which order will packets be scheduled out of the queues?
In the given configuration, queue 4 is associated with a lower rate and CIR compared to queue 3. In most scheduler implementations, packets within the CIR (Committed Information Rate) are serviced first due to their higher priority. Therefore, queue 4's within-CIR packets will be sent out first, followed by queue 3's within-CIR packets. After the within-CIR packets are dealt with, the scheduler then handles packets that exceed the CIR (above-CIR packets). Given the round-robin scheduling typically used for above-CIR packets, both queues 3 and 4 will have their above-CIR packets scheduled in a round-robin manner. As a result, the correct order of scheduling is queue 4 within-CIR packets, then queue 3 within-CIR packets, and finally the above-CIR packets from both queues in round-robin.
I agree!
D is correct!