Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!umd5!uflorida!gatech!udel!princeton!njin!aramis.rutgers.edu!topaz.rutgers.edu!ron
From: ron@topaz.rutgers.edu (Ron Natalie)
Newsgroups: comp.dcom.lans
Subject: Re: Ethernet Multiport Transceiver Design Help Needed
Keywords: Total Cabling Distances
Message-ID: 
Date: 28 Jun 88 15:57:34 GMT
References: <363@mergvax.UUCP>
Distribution: na
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 17

The cable lengths seem to be for real.  I've got a 50m cable running
from my office to two different DELNI type devices (one's a TCL and
the other's a Cabletron).  These in turn are connected by 10m cables
to their transceivers.

Trancevier cable distances are really dependant on what the cable is
made out of.  We've streched them as far as 100m (it wasn't me who
did that, honest) without real problem.

I've never found anything in the DEC network book to be wrong.  The
DEC Network and Communications buyers guide rules on building Ethernet
networks are more conservative than what the SPEC's allow and if 
build by this you shouldn't have any problems.  The only complaint
I have with spec is that it always specifies DEC parts (natch) and
that they always provide the protocol independant solution, which
I don't believe in for large networks.

-Ron