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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: Re: Fast communications
Message-ID: <2657@ucbvax.ARPA>
Date: Thu, 18-Oct-84 09:43:39 EDT
Article-I.D.: ucbvax.2657
Posted: Thu Oct 18 09:43:39 1984
Date-Received: Fri, 19-Oct-84 06:29:51 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 17

From: Richard Garland 

-- Joining 2 ethernets separated by a mile:

If you can squeez the distance to a kilometer (1000M) then you can get
an ethernet repeater with an optical fiber link between 2 halves of
the repeater.  DEC sells such a product and has shown it at the last several
DECUS symposia.  Perhaps you can bend the specs a little and run
it over a longer fiber.  The name of this box is the DEREP-RA.  It consists
of 2 half repeaters.  You also buy the fiber and 2 tranceivers to hang off
of each ethernet.  There may be similar products from others - I think
Ungermann-Bass has something similar.  This scheme has the advantage of a
single E-net.  I'm not sure how the cost compares to other schemes
such as T1 lines hooked to PDP-11's etc.   It may also have a speed
advantage.
					Rg
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