From: raul raul (juvenn@hotmail.com)
Date: Fri May 30 2008 - 10:40:23 ART
Hi
are u sure cisco will make mistake in thier doc cd ?
Anybody pls help to clarify and explain
Thanks
> From: DAthaide@epco.com> To: juvenn@hotmail.com; ccielab@groupstudy.com> Date: Fri, 30 May 2008 08:17:25 -0500> Subject: RE: shape peak> > I think the Cisco example you mentioned below is incorrect in the DOC CD. If> you want a throughput of 512K then you will need to do a shape peak of 256K> (if 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> > > > > > > > why is shape peak 512000 on cisco article ?> > if i shape peak then i will get 1024000; is this correct ? or other way round> > ? pls explain ? Traffic Shaping Target/Average Byte Sustain> > Excess> > Interval Increment Rate Limit bits/int bits/int> > (ms) (bytes) 1024000/512000 3200 12800 12800> > 25 3200> > > > -----Original Message-----> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of raul> raul> Sent: Thursda!
y, May 29, 2008 10:49 PM> To: ccielab@groupstudy.com> Subject: shape peak> > > > Hi ;> > > > need help> > > > > > Usage Guidelines> > Traffic shaping limits the rate of transmission of data. In addition to using> > a specifically configured transmission rate, you can use Generic Traffic> > Shaping (GTS) to specify a derived transmission rate based on the level of> > congestion.> > You can specify two types of traffic shaping; average rate shaping and peak> > rate shaping. Average rate shaping limits the transmission rate to the CIR.> > Using the CIR ensures that the average amount of traffic being sent conforms> > to the rate expected by the network.> > Peak rate shaping configures the router to send more traffic than the CIR. To> > determine the peak rate, the router uses the following formula:> > peak rate = CIR(1 + Be / Bc)> > where:> > Be is the Excess Burst size.> > Bc is the Committed Burst size.> > Peak rate shaping allows the router to burst higher than average ra!
te> shaping.> > However, using peak rate shaping, the traffic !
sent abo
ve the CIR (the delta)> > could be dropped if the network becomes congested.> > If your network has additional bandwidth available (over the provisioned CIR)> > and the application or class can tolerate occasional packet loss, that extra> > bandwidth can be exploited through the use of peak rate shaping. However,> > there may be occasional packet drops when network congestion occurs. If the> > traffic being sent to the network must strictly conform to the configured> > network provisioned CIR, then you should use average traffic shaping.> > Examples> > The following example sets the uses average rate shaping to ensure a> bandwidth> > of 256 kbps:> > shape average 256000> > > > > > 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> > > > > > > > why is shape peak 512000 on cisco article ?> > if i shape peak then i!
will get 1024000; is this correct ? or other way round> > ? pls explain ? Traffic Shaping Target/Average Byte Sustain> > Excess> > Interval Increment Rate Limit bits/int bits/int> > (ms) (bytes) 1024000/512000 3200 12800 12800> > 25 3200> > _________________________________________________________________> > Manage multiple email accounts with Windows Live Mail effortlessly.> > http://www.get.live.com/wl/all> > > > > > _______________________________________________________________________> > 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> > > >
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