I have two questions to verify my concept about CBWFQ,
- Let's assume i have four classes, Voice (PQ), Critical Data, BE and Scavenger. As per CBWFQ algorithm, at the time of congestion BW is allocated to each class as per configuration in the policy maps to their specified bandwidth allocations as minimum BW guranteed. PQ cannot exceet it's allocated BW, but Critical Data can rob BW from the Default class if more Critical data is coming in the router. Is this concept correct? High priority traffic like critical data can rob BW from Default or BE class? If this is correct, do i have to define fair-queue under default class to make that happen or this is by default and does not any fair-queue statement or any other additional config to be defined?
- Is there a reason/benefit of using bandwidth percent over bandwidth remaining percent?
Thanks in advance !