From: Volkov, Dmitry (IDS Canada) (dmitry_volkov@ml.com)
Date: Thu Aug 14 2003 - 00:19:05 GMT-3
Actually it was "other" Brian - Brian McGahan
http://www.groupstudy.com/archives/ccielab/200307/msg00608.html
Dmitry
> -----Original Message-----
> From: Thomas Larus [mailto:tlarus@cox.net]
> Sent: Wednesday, August 13, 2003 9:15 PM
> To: Danny.Andaluz@triaton-na.com; ccielab@groupstudy.com
> Subject: Re: CAR configuration
>
>
> If I remember correctly, it goes more like this:
>
> You take the desired bps limit, say 8,000,000, to make it easy.
>
> You divide that by 8 to get bytes. So 1,000,000 bytes.
>
> Then you multiply that bytes value times 1.5 to get the bytes
> burst value.
> 1,500,000 bytes.
>
> Then for the bytes excess burst value, you multiply the bytes
> burst value
> times 2. 3,000,000 bytes.
>
> At first glance, one would think that these high burst values
> would result
> in output that would exceed the desired rate, but Brian
> Dennis did some
> testing a few weeks back and found that this formula made the
> bandwidth
> approximate the limit, while if one just specified bits per
> second without
> setting bytes burst and bytes excess burst, the bandwidth
> gets throttled
> down way too low.
>
> Check out the archives or search your emails for the last
> month or so to get
> it straight from the horse's mouth. I am going from memory here.
>
> Tom Larus, CCIE #10,014
>
>
> ----- Original Message -----
> From: <Danny.Andaluz@triaton-na.com>
> To: <ccielab@groupstudy.com>
> Sent: Wednesday, August 13, 2003 8:14 PM
> Subject: CAR configuration
>
>
> > Hello, Group,
> >
> > Example 1:
> > rate-limit input 5000000 625000 625000 conform-action transmit
> exceed-action
> > drop
> >
> > Example 2:
> > rate-limit input 5000000 40000 40000 conform-action
> transmit exceed-action
> > drop
> >
> > I got these examples from a book I am reading and I am
> confused about one
> > thing. I have read from numerous sources that the Bc is
> equal to 1/8 the
> > CIR. In Example #1, this is the case. In Example #2 it is
> not. I am
> > having a hard time understanding when to use which.
> >
> > Thanks,
> > Danny
> >
> >
> >
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