From: George Goglidze (goglidze@gmail.com)
Date: Sat Jan 05 2008 - 18:26:15 ARST
Hi There,
Thanks to all for your help,
Shiran thank you for you help, that is actually what I thought,
also I was thinking about traffic shaping at 80 percent too,
I don't know if that would count as correct answer.
Regards,
On Jan 5, 2008 7:43 PM, shiran guez <shiranp3@gmail.com> wrote:
> that is where the wording of a question and understanding of the
> technology come together, first you need to look at the question exactly to
> the word as it was given to you as minor thing can impact. but to the point
> you cant really estimate 80% based on WRED as you need to know your exact
> traffic pattern and size of packets to calculate that and I do not think (I
> hope :-)) that do not try to give you something you cant do in the time
> frame you have for the test.
>
> for your question if I would have this, I would set
>
> policy-map CON-AVOIDE
> class class-default
> bandwidth percent 80
> random-detect
>
> interface <CCC>
> ! do not forget to set the max reserved bandwidth to higher then default
> 75%
> max-reserved-bandwidth 90
> service-policy out CON-AVOIDE
> !
>
> Serial0/1
>
> Service-policy output: CON-AVOIDE
>
> Class-map: class-default (match-any)
> 9 packets, 590 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: any
> Queueing
> Output Queue: Conversation 265
> Bandwidth 80 (%)
> Bandwidth 1235 (kbps)
> (pkts matched/bytes matched) 1/124
> (depth/total drops/no-buffer drops) 0/0/0
> exponential weight: 9
> mean queue depth: 0
>
> class Transmitted Random drop Tail drop Minimum Maximum
> Mark
> pkts/bytes pkts/bytes pkts/bytes thresh thresh
> prob
> 0 3/72 0/0 0/0 20 40
> 1/10
> 1 0/0 0/0 0/0 22 40
> 1/10
> 2 0/0 0/0 0/0 24 40
> 1/10
> 3 0/0 0/0 0/0 26 40
> 1/10
> 4 0/0 0/0 0/0 28 40
> 1/10
> 5 0/0 0/0 0/0 30 40
> 1/10
> 6 6/518 0/0 0/0 32 40
> 1/10
> 7 0/0 0/0 0/0 34 40
> 1/10
> rsvp 0/0 0/0 0/0 36 40
> 1/10
>
>
> On Jan 5, 2008 6:36 PM, George Goglidze <goglidze@gmail.com> wrote:
>
> > Hi There,
> >
> > Let's say I have a question on the lab, which says we need to avoid
> > congestion,
> > so when traffic utilization is at let's say 80 percent we have to start
> > dropping packets.
> >
> > so we configure WRED, but the question is:
> > In WRED we can put minimum threshold and maximum threshold,
> > but they are given in queue size(how many packets we have in a queue
> > right
> > now.).
> >
> > So we can't be very precise as for 80 percent of bandwidth utilization.
> > how do we calculate many packets we have in a queue when it gets to 80
> > percent???
> >
> > Thanks,
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
>
>
>
> --
> Shiran Guez
> MCSE CCNP NCE1
> http://cciep3.blogspot.com
> http://www.linkedin.com/in/cciep3
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