From: Scott Morris (swm@emanon.com)
Date: Tue Jul 04 2006 - 11:38:13 ART
Is that a per-router configuration? I think we're in the same boat as
before for looking to a solution that works with either per-PVC or
per-interface setup.
So for interface-based solutions, that would be an acceptable method.
Scott
-----Original Message-----
From: Arun Arumuganainar [mailto:aarumuga@hotmail.com]
Sent: Tuesday, July 04, 2006 6:44 AM
To: Scott Morris; 'Montgomery, Jerry'; ccielab@groupstudy.com
Subject: Re: IPEXPERT LAB 12 Task 8
Hi Scott and All,
Does the question talks about CDT !!!
Let me explain : Hold-queue is generic figure ... It signifies how many
packets does output buffer or input buffer can hold. If Hold-queue limit is
exceeded, the behavior will always be tail-drop
fair-queue aggregate-limit: This is also different . This figure has
significance only in the context of VIP based distributed switching !!! In
VIP based routers( C75ks) , limit can be set for individual queues
(fair-queue individual-limit command ). However even by doing so enforcement
will kick in only when aggregate limit is breached. Till the time queue size
will be allowed to grow beyond the individual limit !!!
In my opinion we need to set CDT to correctly answer the question.
Fair-queue algorithm will start dropping packet even before hold-queue limit
is breached. This will enable us selectively drop aggressive flows there by
avoiding tail drops.
To configure CDT we need to do the following .
fair-queue [congestive-discard-threshold [dynamic-queues
[reservable-queues]]]
Thanks and Regards
Arun
----- Original Message -----
From: "Scott Morris" <swm@emanon.com>
To: "'Montgomery, Jerry'" <jerry.montgomery@eds.com>;
<ccielab@groupstudy.com>
Sent: Tuesday, July 04, 2006 3:46 AM
Subject: RE: IPEXPERT LAB 12 Task 8
> Yeah, you are correct. And hardware in the lab doesn't either. :)
> Sometimes lab writers get a little overzealous with things, but on the
other
> hand, it's good that you could look through the docs and determine
> this
was
> the command you were looking for!!!
>
> The Proctor Guide points this discrepancy out as well.
>
> HTH,
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE #153, CISSP, et al.
> CCSI/JNCI
> IPExpert CCIE Program Manager
> IPExpert Sr. Technical Instructor
> smorris@ipexpert.com
> http://www.ipexpert.com
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Montgomery, Jerry
> Sent: Monday, July 03, 2006 6:05 PM
> To: ccielab@groupstudy.com
> Subject: IPEXPERT LAB 12 Task 8
>
> Good afternoon, all,
>
> The questions was to configure WFQ on a serial interface and set the
maximu
> number of packets that can be in all output queues on the interface at
> any time to 800.
>
>
> The command that I was envisioning to use was "fair-queue
aggregate-limit".
> However, this is associated with Distributed Weighted Fair Queue.
>
> I am assuming that my hardwared just does not support this command.
>
> Am I correct, or am I missing another command?
>
> Thanks,
>
> Jerry
>
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