Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 8/7/84; site ucbvax.ARPA Path: utzoo!linus!decvax!decwrl!amd!dual!ucbvax!info-vax 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 -------