From: Saru Vijayakumar (v_saru@hotmail.com)
Date: Tue Oct 08 2002 - 17:04:58 GMT-3
>From: ccielab@groupstudy.com
>To: v_saru@hotmail.com
>Subject: Please confirm (conf#7783d00447369c35523577d355715193)
>Date: Tue, 8 Oct 2002 13:36:55 GMT
>
>Hi,
>
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>From v_saru@hotmail.com Tue Oct 8 13:36:53 2002
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>From: "Saru Vijayakumar" <v_saru@hotmail.com>
>To: Giveortake@aol.com, Svuillaume8@aol.com, ccielab@groupstudy.com
>Subject: Re: FRTS
>Date: Tue, 08 Oct 2002 09:36:22 -0400
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>
>Here is a very good link from Cisco:
>
>http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a00800942f8.shtml#conf
>
>Here is how I understood this:
>
>cir - The average rate you want to send traffic on a pvc in bps. This is
>generally higher than guaranteed rate but less than Access Rate (AR) which
>is the physical speed of the port.
>
>mincir - Actual guaranteed rate obtained from a service provider in bps.
>This value should be the min-rate you should drop to in the event of
>congestion. Dropping below min-cir implies you are not getting the BW you
>are paying for.
>
>AR - This is Access Rate (physical speed of port) to which you can burst to
>over very small time intervals Tc which is 1/8 sec for this scenario.
>
>HTH.
>
>
> >From: Giveortake@aol.com
> >Reply-To: Giveortake@aol.com
> >To: Svuillaume8@aol.com, ccielab@groupstudy.com
> >Subject: Re: FRTS
> >Date: Mon, 7 Oct 2002 21:27:23 EDT
> >
> >If thats what Jeff Doyle says, I say Jeff Doyle is wrong! But then
>again
> >who am I (dumb guy who failed twice) That may be ok for certain
> >situations,
> >but does not cover all.
> >
> >I don't believe you can make a blanket statement like that listed below.
> >Frankly its just wrong. It may be right in a "specific" scenerio but
> >WRONG
> >for another.
> >
> >CIR = Port physical speed
> >Mincir= CIR ( cir provides by carrier)
> >Bc= remote speed circuit /8
> >Be<= port speed of the remote router
> >
> >Actually I think the blanket statements like this are killing people from
> >understanding. What we need are a couple good scenerios to demonstrate
> >real
> >life situations such as over subscribing a head end, throttling back to
> >certain transmit rates if BECN's received etc.......... Traffic shaping
> >takes some math and some thought. Not memorize these four lines.
>
>
>
>
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