From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Aug 16 2006 - 18:51:32 ART
It's not contradictory. Suppose you configure "priority 100"
for a class. This means that all traffic up to 100Kbps for that class
is guaranteed low latency. If there is no congestion you can exceed the
rate and you won't get policed, but traffic over 100Kbps will not get
low latency. If there *is* congestion traffic over 100Kbps for that
class will get policed.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Victor Cappuccio
> Sent: Wednesday, August 16, 2006 4:34 PM
> To: 'Bob Sinclair'; 'roehsler'; ccielab@groupstudy.com
> Subject: RE: LLQ and policing
>
> Hi Bob,
>
> Please if you do not mind, can you show us an example of doing that,
this
> seems to be contradictory of what Brian just sent
> "it can use more than the specified bandwidth, however traffic in
excess
> of
> the rate is not guaranteed low latency. If there is congestion and
> traffic
> exceeds the rate it will be policed."
>
> Thanks
> Victor.-
>
>
>
> -----Mensaje original-----
> De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
Bob
> Sinclair
> Enviado el: Miircoles, 16 de Agosto de 2006 04:58 p.m.
> Para: 'roehsler'; ccielab@groupstudy.com
> Asunto: RE: LLQ and policing
>
> David
>
> LLQ does not police if there is no congestion. This has been a point
of
> confusion over the years, and is "unclear" in lots of documentation.
You
> can easily verify this by configuring a policy that prioritizes ICMP
with
> a
> very low bandwidth. Then do an extended ping with large packet size
and
> zero timeout.
>
> If you do want to police it when not congested, add a police command
to
> the
> class.
>
> HTH,
>
> Bob Sinclair CCIE 10427, CCSI 30427
> www.netmasterclass.net
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> roehsler
> Sent: Wednesday, August 16, 2006 4:43 PM
> To: ccielab@groupstudy.com
> Subject: LLQ and policing
>
> Hi,
>
> Just trying to nail down an understanding of LLQ.
>
> When you specify the amount of bandwidth that LLQ traffic can have
> prioritized, can that class of traffic utilize more available
> bandwidth if there is not congestion on the link? In other words is
> the prioritized traffic policed to that specified limit?
>
> Thanks
>
> David
>
>
This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:57 ART