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Path: utzoo!mnetor!seismo!rutgers!topaz.rutgers.edu!ron
From: ron@topaz.rutgers.edu (Ron Natalie)
Newsgroups: comp.dcom.lans
Subject: Re: repeater opinions wanted
Message-ID: <12817@topaz.rutgers.edu>
Date: Fri, 19-Jun-87 15:37:30 EDT
Article-I.D.: topaz.12817
Posted: Fri Jun 19 15:37:30 1987
Date-Received: Mon, 22-Jun-87 03:32:28 EDT
References: <823@sdcc12.ucsd.EDU>
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 19
Keywords: ethernet on broadband, repeater

CHIPCOM makes a device called an ethermodem that directly
simulates an 10 MHz ethernet over an 18MHz broadband channel.
Each box appears to be a transciever (with one or two ports).
You use either a normal baseband-baseband repeater such as the
DEREP or a data-link level bridge such as the LANBRIDGE to inter-
connect your baseband net to this.

If you don't want to use the repeater approach, several companies
such as Applitek and Bridge make BASEBAND to BROADBAND data-link
bridges.  Rather than simulating an ethernet on the broadband, these
trasnmit the packets to another like box which dumps it back on the
remote LAN.  They filter packets that can safely remain local to one
segment similar to the way the LANBRIDGE works.  These boxes both
consume one 6 MHz channel (in each direction) on the Broadband.

I posted a description of the various broadband ethernet interconnections
not too long ago.

-Ron