- Priority Queueing and Weighted Fair Queueing are normally very different
and distinctive queue mechanisms, each with their own idiosyncrasies.
As Cisco struggles to find the QoS nirvana the rules are changing. . .
Low Latency Queuing via Class Based Weighted Fair Queueing, a feature
that seemed to start around in 12.0.7T, combined priority with CB-WFQ.
The way I understand it, when the priority keyword is used to invoke low
latency queueing instead of the bandwidth keyword, the policy map class
that contains the priority is dequeued first and sent over those that do
not.
It appears that LLQ is meant for real time streams such as video and
voice,
but I do not see why it could not be used with other data types just as
easily.
There are examples of this on CCO, try searching using low latency
queueing
as the search phrase.
--- ----- ---
""Cthulu"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi,all,
>
> I just finished Caslow, 2nd ed. In the chapter on queuing, he very
briefly
> mentions a beast called "priority-queuing weighted fair queuing". The
two
> alone, I get; however, I am unable to find any info on the Cisco site
about
> the merger (if you can call it that) that results in "PQ-WFQ".
>
> Was Caslow smoking crack, or does have a line to Madame Cleo where he can
> see technologies before they are actually here?
>
> Can someone give me some links to the official Cisco PQ-WFQ pages/docs?
>
>
> Thanks,
>
> Charles
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