Re: How does class based queuing work with interface queueing?

mate as far as I know the software queuing ie CBWFQ etc only occurs
when a packet cannot be placed in the Tx ring.

groupstudy2001@xxxxxxxxxxx wrote:
> Simple query: What queues are involved in the output of a packet from a
> router?
>
> Specifically: When applying a service policy for output packets one can
> choose such as CBWFQ or PQ or CQ etc. Once the policy has done its
> queuing/queueing what happens with the packet? Does it immediately get
> lined up for the transmit ring or does it then also go through the
> queueing for the interface and only then go to the transmit ring?
>
> Or does it depend on the architecture of the specific router model or
> family? I'm confused as to the details and cannot find an answer on
> Cisco's site.
>
> The reason for asking is that some recent IOS versions don't allow the
> class-default to have fair-queueing applied. We have fair queueing on
> the interface itself but from customer reports traffic in the default
> class seems to NOT get fair queue treatment. I can't find out if this
> is right or not so any pointers would be appreciated.
>
> --
> TIA,
> James

.

Relevant Pages

  • [patch 07/10] [TULIP] Use tulip.h in winbond-840.c
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