From: Dan Lockwood (dlockwood@shastalink.k12.ca.us)
Date: Tue Oct 14 2003 - 12:29:04 GMT-3
Thanks to all who responded. After talking with everyone, I'm more and
more convinced that this is simply another case of "I've been selling
ATM for three years but I don't know how to spell it..." In my area at
least this is the typical MO.
Thanks again!
Dan
-----Original Message-----
From: Yasser Aly [mailto:blackyeyes00@hotmail.com]
Sent: Monday, October 13, 2003 20:18
To: Dan Lockwood; ccielab@groupstudy.com
Subject: Re: To all the ATM gurus out there
Hi Dan,
I can see no technical reason stopping you from doing what u want.
Maybe
your SBC rep is trying either to make more money out of you as a
customer or
he is trying to work on a pre-defined ratio like the summation of
bandwidth
contracted to spokes equals to the bandwidth provided to the hub.
For yourself you can check the summation of DS3s you have and whether
it
exceeds the OC3 or not.
If notexceeded then definitly you are safe, but if yes, then it's your
call
to choose what is appropriate and enough bandwidth for all spokes
assuming
all of them are busy speaking to the hub.
Regards,
Yasser
>From: "Dan Lockwood" <dlockwood@shastalink.k12.ca.us>
>Subject: To all the ATM gurus out there
>Date: Mon, 13 Oct 2003 16:22:21 -0700
>
>I have an ATM theory question for all the experts out there. The way
>that I always understood ATM was in relation to Frame Relay. DLCIs vs
>VPI/VCI, etc. Here is the scenario... I have an OC3 at a hub site, and
>four other spoke sites that each have a DS3 and each spoke site is
>mapped only to the hub site. When the ATM switch is programmed, is
>there a specific bandwidth amount attached to each virtual path? I'm
>sure that there can be an arbitrary limit set, but I am thinking again
>in terms of FR; I could have many spokes pointing to a hub site and
>each spoke would only be limited in terms of bandwidth by what the hub
>could sustain. Therefore if all of the spoke sites were very busy
>passing information via the hub then there would be less bandwidth
>available to each of the spokes. But if one spoke was very busy and
>the others were not then there should not be a bandwidth shortage? I
>am trying to understand why my SBC rep refuses to install additional
>DS3s with virtual paths back to my OC3 unless I upgrade my OC3 to an
>OC12. It all seems really silly to me. Can anyone offer some insight?
>
>Thanks!
>
>Dan Lockwood
>Microsoft Certified Professional
>CompTIA Network+ Certified
>Cisco Certified Network Associate
>
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