From: Arun Arumuganainar (aarumuga@hotmail.com)
Date: Wed Jul 05 2006 - 01:47:25 ART
Hi Scott,
Questions reads like this .
"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."
Hence we need to configure this on Serial interface . I still did not fully
understand what you refer as Per-VC or per-interface fundas !!!It would be
great if you can throw some light on it .
By the way when I read through you the email train , it reminded me of the
conversation I had with a proctor .
>> Yeah, you are correct. And hardware in the lab doesn't either. :)
> > Sometimes lab writers get a little overzealous with things,
Actually I got in to a problem when I was giving my SP exam. I got struck
when I tried to enable one feature. My router simply refused to accept the
CLI. I went to the proctor to complain . He simply told me that ...all the
labs were tried on the same test bed and for the given IOS image atleast 10
times before it is Okayed for administering it for actual exam . Hence if I
am stuck because my IOS does not support it then probably I am doing some
thing wrong. There could be another simpler solution that might be needed in
this scenario!!! Actually what he told me was correct ...I realized it only
after my exam is over ( very costly mistake )
To summarize : For sure we may not get struck with problem like IOS Bug ,
Unsupported features , unsupported hardware etc. When we find ourselves in
that scenario ...then far sure we can conclude that we are progressing in
the wrong direction.
This is my 2 cents.
Thanks and Regards
Arun
----- Original Message -----
From: "Scott Morris" <swm@emanon.com>
To: "'Arun Arumuganainar'" <aarumuga@hotmail.com>; "'Montgomery, Jerry'"
<jerry.montgomery@eds.com>; <ccielab@groupstudy.com>
Sent: Tuesday, July 04, 2006 8:08 PM
Subject: RE: IPEXPERT LAB 12 Task 8
> 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
> >
> > ______________________________________________________________________
> > _ Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> > ______________________________________________________________________
> > _ Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Tue Aug 01 2006 - 07:13:46 ART