Date: Sat, 17 Jul 1999 08:29:34 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Duncan Barclay <dmlb@ragnet.demon.co.uk> Cc: hackers@FreeBSD.ORG, crypt0genic <crypt0genic@ecad.org>, Bill Paul <wpaul@skynet.ctr.columbia.edu>, Vincent Poy <vince@venus.GAIANET.NET> Subject: Re: poor ethernet performance? Message-ID: <199907171529.IAA74679@apollo.backplane.com> References: <XFMail.990717113935.dmlb@computer.my.domain>
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:
:And you seen the nice square waves of 100Mb or !Gb ether on a line then? The
:techniques used for transmitting 100Mb/s down copper are certainly not digital.
:Pulse shaping, line estimation, ISI removal are all analogue!
:
:The cable itself is less improtant than the impedance matching at connectors
:and bends in the cable.
:
:Duncan
:
:Duncan Barclay | God smiles upon the little children,
:dmlb@ragnet.demon.co.uk | the alcoholics, and the permanently stoned.
Obviously you don't get square waves going down the wire - But it is
still a digital communications protocol.
-Matt
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