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Date:      Thu, 20 Mar 1997 15:28:41 -0700 (MST)
From:      Softweyr LLC <softweyr@xmission.com>
To:        luigi@labinfo.iet.unipi.it (Luigi Rizzo)
Cc:        questions@freebsd.org
Subject:   Re: a networking question...
Message-ID:  <199703202228.PAA13567@xmission.xmission.com>
In-Reply-To: <199703201213.NAA05613@labinfo.iet.unipi.it> from "Luigi Rizzo" at Mar 20, 97 01:13:17 pm

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> I am having a hard time in finding cheap Ethernet repeaters with
> BNC ports, whereas 10 Mb/s HUBs with 10BaseT RJ45 ports are now
> available for about $15/port.  Is it possible to connect the AUI
> port of a BNC transceiver to the Tx/Rx pairs of an RJ45 port and
> make the connection work ? (of course with an external power supply)

DataComm Warehouse sells a 4-port 10Base2 repeater for $199.  I've
used one of these before and it works just fine.  If you really need
to extend or segment a thinnet, this is probably the least expensive
way to do it.

> I am asking because quite often I have seen RJ45 "transceivers" to be
> connected to the AUI port which are a block of plastic with
> only wires inside. The collision pair is evidently left unconnected,
> but this might work just because the AUI port on those ethernet cards
> is special.

I suspect this won't work, but it'll only cost you two transcievers
to find out.  The AUI to BNC transcievers I've worked with get power
from the AUI port, amongst other problems, so you can't just wire
two of them back-to-back.


-- 
          "Where am I, and what am I doing in this handbasket?"

Wes Peters                                                       Softweyr LLC
http://www.xmission.com/~softweyr                       softweyr@xmission.com



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