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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ATM Wide-Area Networks (was: sell shell accounts?)
> Date: Tue, 23 Jul 1996 14:28:27 -0400 > From: Paul Ferguson <[email protected]> > Subject: Re: ATM Wide-Area Networks (was: sell shell accounts?) > [...] > It depends on what you mean when you say 'performance'. I think > there is more and more interest being vested in ATM inefficiency, > and alternate technologies to better efficiency in the long-haul. > > Recall Jerry Scharf's numbers; they're indicative of the issue. > [...] > HDLC framing bytes = 3080633605 HDLC efficiency = 97.72 > ATM framing bytes = 3644304857 ATM efficiency = 82.61 > ATM w/snap framing bytes = 3862101043 ATM w/snap efficiency = 77.95 At a certain point, some of these arguments about ATM efficiency sound a bit like saying FDDI is terrible because 4B/5B encoding is only 80% efficient. I think a more interesting measure of the value of ATM versus other wide-area technologies is some sort of measure of throughput per dollar. -tjs - - - - - - - - - - - - - - - - -
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