From: Narbik Kocharians (narbikk@gmail.com)
Date: Sun Nov 23 2008 - 17:05:15 ARST
When you have gigs and gigs of information specially at such technical
level, these things are expected.
On Sun, Nov 23, 2008 at 11:00 AM, Pavel Bykov <slidersv@gmail.com> wrote:
> I think in this case, person writing DOC CD didn't quite understand the
> technology.
> Happens all the time. For example, in the ASR 9000 data sheet, AutoRP
> is "Automatic
> route processing". Seems that person writing it was using google and not
> "Acronym Finder".
> Or just thinking logically - it's a protocol that automatically selects
> Rendezvous Point.... nor automatically process routes.
>
>
> http://www.cisco.com/en/US/prod/collateral/routers/ps9853/data_sheet_c78-501767.html
>
>
>
>
> On Sat, Nov 22, 2008 at 2:00 PM, Huan Pham <pnhuan@yahoo.com> wrote:
>
> > Hi,
> >
> > I posted a similar question few months ago, and I got a very good answer
> > from Narbik. I also believe his answer is right.
> >
> > http://www.groupstudy.com/archives/ccielab/200806/msg01899.html
> >
> > However, today, I came accross an example in DOC CD, which left me
> > wondering, whether DOC CD example is wrong or not. I did come accross few
> > wrong example in the Doc CD before, and I believe this one is another
> one.
> >
> > Really need your opinion on this, to clear things up.
> >
> > Here's the link to the DOC CD:
> >
> >
> >
> http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_s1.html#wp1014690
> >
> > shape
> >
> > To specify average or peak rate traffic shaping, use the shape command in
> > class-map configuration mode. To remove traffic shaping, use the no form
> of
> > this command.
> >
> > shape {average | peak} cir [bc] [be]
> >
> > =================================================================
> >
> > The following example uses peak rate shaping to ensure a bandwidth of 300
> > kbps but allow throughput up to 512 kbps if enough bandwidth is available
> on
> > the interface:
> >
> > bandwidth 300
> > shape peak 512000
> >
> > =================================================================
> >
> >
> > In my opinion, this configuration will give a peak rate of 1024K, instead
> > of 512K.
> >
> > here's the config, and what the show policy interface output:
> >
> >
> > Rack1R1#
> > class-map match-all WWW
> > match protocol http
> >
> > policy-map SHAPE
> > class WWW
> > bandwidth 300
> > shape peak 512000
> >
> > interface Serial0/0
> > service-policy output SHAPE
> >
> > Rack1R1#sh policy-map interface
> > Serial0/0
> > Service-policy output: SHAPE
> > Class-map: WWW (match-all)
> > 0 packets, 0 bytes
> > 5 minute offered rate 0 bps, drop rate 0 bps
> > Match: protocol http
> > Queueing
> > Output Queue: Conversation 265
> > Bandwidth 300 (kbps)Max Threshold 64 (packets)
> > (pkts matched/bytes matched) 0/0
> > (depth/total drops/no-buffer drops) 0/0/0
> > Traffic Shaping
> > Target/Average Byte Sustain Excess Interval Increment
> > Rate Limit bits/int bits/int (ms) (bytes)
> > 1024000/512000 3200 12800 12800 25 3200
> > Adapt Queue Packets Bytes Packets Bytes Shaping
> > Active Depth Delayed Delayed Active
> > - 0 0 0 0 0 no
> > Class-map: class-default (match-any)
> > 1 packets, 13 bytes
> > 5 minute offered rate 0 bps, drop rate 0 bps
> > Match: any
> >
> >
> > I think the solution should be, following. Any opinion please?
> >
> > bandwidth 300
> > shape peak 300000 37500 26500
> >
> > Rack1R1#show policy-map interface
> > Serial0/0
> > Service-policy output: SHAPE
> > Class-map: WWW (match-all)
> > 0 packets, 0 bytes
> > 5 minute offered rate 0 bps, drop rate 0 bps
> > Match: protocol http
> > Queueing
> > Output Queue: Conversation 265
> > Bandwidth 300 (kbps)Max Threshold 64 (packets)
> > (pkts matched/bytes matched) 0/0
> > (depth/total drops/no-buffer drops) 0/0/0
> > Traffic Shaping
> > Target/Average Byte Sustain Excess Interval Increment
> > Rate Limit bits/int bits/int (ms) (bytes)
> > 512000/300000 8000 37500 26500 125 8000
> > Adapt Queue Packets Bytes Packets Bytes Shaping
> > Active Depth Delayed Delayed Active
> > - 0 0 0 0 0 no
> > Class-map: class-default (match-any)
> > 293 packets, 64409 bytes
> > 5 minute offered rate 0 bps, drop rate 0 bps
> > Match: any
> >
> >
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> >
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> >
> >
> >
> >
> >
> >
> >
> >
>
>
> --
> Pavel Bykov
> ----------------
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>
>
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>
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>
-- Narbik Kocharians CCSI#30832, CCIE# 12410 (R&S, SP, Security) www.MicronicsTraining www.Net-Workbooks.com Sr. Technical InstructorBlogs and organic groups at http://www.ccie.net
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