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Path: utzoo!linus!decvax!decwrl!sunny
From: sunny@sun.uucp (Sunny Kirsten)
Newsgroups: net.lan
Subject: Re: Ethernet Transceivers
Message-ID: <1778@sun.uucp>
Date: Tue, 6-Nov-84 04:54:33 EST
Article-I.D.: sun.1778
Posted: Tue Nov  6 04:54:33 1984
Date-Received: Thu, 8-Nov-84 04:00:42 EST
References: <21@mot.UUCP>
Organization: Sun Microsystems, Inc.
Lines: 23

> [ what is this line for? ]
> 	This site is a fairly recent addition to Usenet news, and this is
> my first posting.  Kindly forgive me if this has been discussed in the past.
>      We just "discovered" that there are TWO styles of Ethernet Transceivers,
> and that depending on the "type" of Ethernet being used, you must use one or
> the other type of Transceiver.
>      There is "Ethernet 1" and "Ethernet 2" (Ethernet 2 is "compatible" with the
> 802.3 standard, Ethernet 1 is not).
>      The LAN software we just received is Ethernet 2, and must use the latter
> type of transceivers.  The correct ones from TCL have model numbers which are
> suffixed with "I" or "IS".  Previously we (and our vendor) have been using
> ones with a "E" or "EB" suffix.  For the new LAN software release, the "E" and
> "EB" ones are WRONG!
> 	How well known is this problem?  Anything else we need to be aware of?

It is well known that the 802.3 Standards Committed is well influenced by
manufacturers who are entering the LAN market well after the emergence of
Ethernet 1 as a standard, and they went out of their way to make Ethernet 2
(802.3) incompatible with Ethernet 1, to negate the market-place lead-time
that the existing Ethernet 1 manufacturers had gained.
-- 
exit
{ucbvax,decvax,ihnp4}!sun!sunny (Sunny Kirsten of Sun Microsystems Inc.)