daemon@decwrl.UUCP (01/02/84)
From: oblio::croll An Ethernet repeater is used to connect two coax segments, to extend the length of an ethernet beyond the 500 meter segment limit. You can mix and match segments in any configuration, as long as the maximum distance between any two stations does not exceed the 1500 meter limit imposed by the ethernet specification (at least, I think it's 1500 meters; my memory is spotty). The repeaters are connected to the segments by standard transceiver cables. This means that the maximum distance between cable segments is 100 meters (or less, depending on cable losses within the repeaters themselves). The repeater is very dumb; all it does is repeat any signal on one cable on the other. DEC sells an option that allows you to connect two repeaters with a 1000 meter length of optical cable; this lets you have an ethernet with a 2500 meter max distance between stations. It also lets you string the ethernet between buildings, and provides electrical isolation, and freedom from EMI. John Croll Digital Equipment Corp., Littleton Ma.
steve@aplvax.UUCP (04/18/84)
<> Does anyone out there have experience with repeaters? In particular, are there any problems related to the differences among Ethernet versions 1 and 2, and 802.3? Thanks for any info. Steve Kahn Johns Hopkins Applied Physics Lab
jbn@wdl1.UUCP (John B. Nagle) (06/20/84)
This message is empty.
mark@umcp-cs.UUCP (07/05/84)
Who besides Xerox sells Ethernet repeaters?
DEC.
--
Spoken: Mark Weiser ARPA: mark@maryland
CSNet: mark@umcp-cs UUCP: {seismo,allegra}!umcp-cs!markskip@gatech.UUCP (Skip Addison) (07/06/84)
<>
Ethernet transceivers are also made by:
TCL, Inc InterLAN
2066B Walsh Avenue 3 Liberty Way
Santa Clara, CA 95050 Westford, MA 01886
(408) 727-3800 (617) 692-3900
TCL also makes multiport transceivers which are handy if you are hanging
several devices off the same network in one room. The breakeven cost
between multiport and normal transceivers comes at about 4.
At Georgia Tech, we've used many of the TCL transceivers and are very
pleased with them.
I am not associated in any way, shape, or form with either of the above
companies, except as a customer. The opinions expressed herein are solely
mine, not Ga Tech's.
--
from the DMZ of Skip Addison
The Office of Telecommunications and Networking
Georgia Tech, Atlanta GA 30332
CSNet: Skip @ GATech ARPA: Skip.GATech @ CSNet-Relay
uucp: ...!{akgua,allegra,rlgvax,sb1,unmvax,ut-ngp,ut-sally}!gatech!skip
--
--
from the DMZ of Skip Addison
The Office of Telecommunications and Networking
Georgia Tech, Atlanta GA 30332
CSNet: Skip @ GATech ARPA: Skip.GATech @ CSNet-Relay
uucp: ...!{akgua,allegra,rlgvax,sb1,unmvax,ut-ngp,ut-sally}!gatech!skip