Re: QoS - Multiple LLQs

There aren't. There's a SINGLE LLQ which is FIFO by design. You can
have multiple classes feed into it though.

So if you have voice at 128K and dlsw at 64K, you end up with a single
LLQ that's 192K in size. Beyond that you can't influence the
Super-Priority versus Priority type things. :)

HTH,

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

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Dale Shaw wrote:
> Hi all,
>
> Can anyone describe in detail, or point me at a resource that
> describes how the IOS queuing scheduler deals with multiple priority
> queues/LLQs?
>
> I have a scenario where I'd like to provide LLQ for voice (RTP), as
> well as specific *delay sensitive* voice signalling protocols.
> Ideally, using MQC/LLQ, I'd like to keep them separate. Based on my
> current understanding of the scheduler, there won't be a way to ensure
> LLQ1 is emptied before de-queuing LLQ2 (like there is in PQ). That's
> OK, as long as the combined bandwidth of both LLQs is guaranteed under
> congestion, and both LLQs are serviced before any other queues. I'm
> happy to be proven wrong about the relative LLQ priority though.
>
> I'm sure I've read about multiple LLQs before but I can't recall where.
>
> cheers,
> Dale
>
>
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Received on Wed May 20 2009 - 19:19:44 ART