Need clarificaion on QOS Behavioural changes for class default

As Per the Cisco web page, default behaviour is flow based WFQ changed as part of HQF on recent release.
We are allocating indiviual flow with bandwidth.

Then how come FIFO queue will come as default queue.
where it serve first in first out packet and no allocation to any of the packet on class default.

From Cisco QOS DOC as below:
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Flow-Based Fair-Queueing Support in Class-Default

The fair-queueing behavior for the class-default class is flow-based. This is a change from the weighted fair queueing (WFQ) behavior in previous releases. With flow-based fair queueing, the flow queues in the class-default class are scheduled equally instead of by weight based on the IP Precedence bits.

Default Queueing Implementation for Class-Default

When you do not explicitly configure the class-default class in a policy map, its default queueing behavior is FIFO. You can configure the bandwidth, fair-queue, or service-policy commands in the class-default class to achieve different queueing behaviors.

Thanks,

Vignesh

 

 

 

 

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