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From: waters@viking.DEC (Lester Waters)
Newsgroups: net.lan
Subject: cable lengths, DELNIs, and more...
Message-ID: <2371@decwrl.UUCP>
Date: Thu, 30-May-85 09:54:22 EDT
Article-I.D.: decwrl.2371
Posted: Thu May 30 09:54:22 1985
Date-Received: Sat, 1-Jun-85 11:49:43 EDT
Sender: daemon@decwrl.UUCP
Organization: DEC Engineering Network
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	I've been recently installing an ethernet with many machines.
Ive been reading ver. 2.0 of the DIX Ethernet specification, and found
the various cable length/repeater restrictions placed on an ethernet.
My question is: how does a DELNI impact this specification?

	We have one main 'hose' with H4000s along it. Each H4000 is connected
to a DELNI. One second DELNI is cascaded with the first. DELNI's really can't
be considered repeaters, can they (excuse my ignorance please)? The ethernet
spec states that a maximum of two repeaters my appear in the path between
two nodes. Hmmm.

	I also seem to remember that as well as restrictions on cable lengths,
etc., there is a maximum sum of cable that can be in one ethernet (that is,
the sum of all the lengths of all the cables). Any ethernet experts out there?

				Thanx,

				    Lester Waters
				    ...!decvax!decwrl!dec-rhea!dec-viking!waters
				    Waters%Viking.DEC@DECWRL   (Arpa)