This seemed to not make it to the list, so I'll try again.
---------------------- Forwarded by Benjamin Walling/HQ/INDECON on 06/14/2000
08:11 AM ---------------------------
Benjamin Walling
06/13/2000 09:01 PM
To: [EMAIL PROTECTED]
cc:
Subject: Re: bandwidth estimation! (Document link not converted)
Well, assuming 56k dialup (you said free ISP, I'm guessing it's not free DSL), I
would figure it like this:
Assume a 6:1 ratio on bandwidth (I know several ISPs that feel this is the safe
ratio to go by). 1000 users times 56k= 56Mbit. Divide that by 6 and you get
about 9Mbit (6 T1s). However, you don't expect to have all 1000 users online at
the same time, do you (I didn't gather whether you would have 1000 customers or
1000 modems)? So, you don't need all of this bandwidth. Figure that maybe 25%
of your users are online at any time (you would need a 250 modem setup for
this), and your bandwidth is 14Mbit, divided by 6 and you get 2.3Mbit. A couple
of T1s should cover you in this case.
The 6:1 comes from the fact that web surfing is very bursty by nature (client
sends request, server send pages, client reads for a while, repeat). Email is
probably factored in there, but I'm pretty sure the ratio is 6:1 inclusive of
email.
Hope that helps you some.
Ben
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