From: Bob Sinclair (bsin@xxxxxxxxx)
Date: Tue Apr 02 2002 - 23:23:02 GMT-3
Correction,
Some of my algebra is wrong below, though I think answer of Bc=3500 is correct.
(Bc + Be)/Tc= max rate
so, Bc + Be = Max-rate X Tc
Be= (max-rate x Tc) - Bc
Be = (128000 X .125) - 12500
Be= 16000 - 12500 = 3500
Back to middle school for me!
-Bob
----- Original Message -----
From: "Bob Sinclair" <bsin@erols.com>
To: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, April 02, 2002 8:56 PM
Subject: Re: FRTS
> Guy,
>
> My take on it is: (bc+be) X Tc = max rate
>
> Remember Be is bits per interval.
>
> So Be = (maxrate-cir)/ Tc
>
> Tc here is .125 seconds, 8 intervals per second
>
> Be= (128000 - 100000)/8 or 28000/8 = 3500
>
> To check: (12500 + 3500) X 8 = 16000 X 8 = 128000
>
> In English: Bc and Be are in Bits/interval. Max rate is (average bits/inter
val plus excess bits/interval) per second. Here, the interval is 1/8 second.
>
> -Bob
>
> ----- Original Message -----
> From: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
> To: <ccielab@groupstudy.com>
> Sent: Tuesday, April 02, 2002 8:22 PM
> Subject: FRTS
>
>
> > If I want to send traffic at an average rate of 100K, being able to burst t
o
> > 128K if credit is built up and dropping to a minimum of 56K during
> > congestion, does this map class look correct? I am trying to figure out if
> > I have this down or not, I am trying to follow the guidelines I found on
> > CCO. Thanks.
> >
> >
> > map-class frame-relay tor1
> > frame-relay cir 100000 (send traffic at an average
> > of 100000)
> > frame-relay bc 12500 (cir/8)
> > frame-relay be in 56000 (added automatically)
> > frame-relay be out 28000 (burst in first interval)
> > frame-relay mincir 56000 (drop to a minimum of
> > 56K)
> > frame-relay adaptive-shaping becn
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