[14775] in North American Network Operators' Group
Re: [nanog] Re: Microsoft offering xDSL access
daemon@ATHENA.MIT.EDU (Greg Simpson)
Fri Jan 23 17:02:35 1998
Date: Fri, 23 Jan 1998 16:30:19 -0500 (EST)
From: Greg Simpson <gws@sweet.com>
To: Martin Hannigan <hannigan@xcom.net>
cc: nanog@merit.edu
In-Reply-To: <3.0.3.32.19980123144721.0096f854@mailhost>
You can't shape to a model you can't develop, but if you're
already established, with those 40 customers you can develop a
bandwidth-distribution layout and rather simply predict trends..
If you are in a highly volatile market, which xDSL doesn't seem to be
quite yet :), this would be impossible, but adding customers at a
constant rate with no changing technology would imply a constant trend..
Of course, as soon as technology changes that is no longer valid :),
but.. alter the model on a monthly basis? ..
I wonder if RX and TX equalize at some point? If you have enough static
[customers] machines connected to be transmitting data at a steady level?
I'd be curious to see some numbers on that..
-greg
> >> Nobody in their right mind would sell T1 to every customer and do 1000:1
> >> overcommit of their transit links without some kind of bandwidth shaping.
> >> Since that shaping is part of the engineering plan, the marketroids will
> >> have to find some way to come clean about it in the advertising glossies.
> >
> >We've got 40 T1 ADSL customers coming into a single 1.1Mb SMDS connection
>
> And I'll bet they're all at different speeds as well, both TX and RX.
> It sounds like you have to play it by ear, that coming up with some
> mathematical model is *almost* impossible.
>
>
> Regards,
>
> --
> Martin Hannigan hannigan@xcom.net
> Director of Data Networks V:617.500.0108
> XCOM Technologies, INC. F:617.500.0002
> The Leading Carrier for ISP's http://www.xcom.net
>
