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From: cak@CS-Arthur (Christopher A Kent)
Newsgroups: net.lan
Subject: Re: Ethernet <=> Ethernet Link
Message-ID: <708@CS-Arthur>
Date: Fri, 27-Jul-84 19:29:08 EDT
Article-I.D.: CS-Arthu.708
Posted: Fri Jul 27 19:29:08 1984
Date-Received: Sun, 29-Jul-84 00:47:57 EDT
References: <435@ittral.UUCP>
Organization: Department of Computer Science, Purdue University
Lines: 19

What you need is a *repeater*. This is a box (or in your case, a pair
of boxes connected by a fiber optics link) that does bit-by-bit
signal propogation between two ethernet segments. Xerox sells one
for local use (that is, the two wires are close enough to each
other to use normal transceiver cables to get from the repeater to each
of the segments) but I don't know if they have a remote repeater (yet).

DEC has announced both flavors of repeaters, but apparently is not
yet delivering yet.

A repeater makes it looks like you have one long cable, not two
subnets connected by gateways. Broadcasts, collisions, everything
propogates between the two.

There is some limit on the distance for a remote repeater; you'll have
to consult the Ethernet spec for details (mine isn't handy).

Cheers,
chris