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Strategies & Market Trends : Gorilla and King Portfolio Candidates
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To: JRH who wrote (4725)8/8/1999 11:41:00 AM
From: John Stichnoth  Read Replies (1) of 54805
 
OT--Backbone issues and Uncle Frank's DSL hookup.

The number I have heard for the practical maximum speed of the backbone is something like 400kb. That's part of the reason G-lite was spec'd the way it was. The speed limitation doesn't in fact come from the backbone itself, as I understand it. The bottleneck is in the servers and routers at the "edge" of the "cloud" (to use Frank Coluccio's term).

I have a personal anecdote on this, though it's getting a bit dated (over a year ago). I signed up for ISDN with BEL. And met a series of obstacles to getting faster response times. The line on the dial-up was busy much more often. The servers sometimes weren't able to match my userid/password (I would time out--presumably the signin servers were overloaded with requests). And when I was on, response time seemed little different. I decided, after using the service that it wasn't my line that was causing the bottleneck, but Bell Atlantic's servers and routers that were having to cache material because there were too many people on for the number of gates they had put in.

My point in the above is that throughput will very much depend on the individual ISP's setup. They all "oversubscribe" their bandwidth, in the expectation that not all users will be working at the same time. The question is how badly does your ISP oversubscribe? And, good luck getting that info out of the ISP.

Best,
JS
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