9 Jan
2008
9 Jan
'08
5:53 p.m.
At 08:48 PM 1/8/2008 -0800, you wrote:
On Jan 8, 2008 8:11 PM, Brent Hilpert <hilpert at
cs.ubc.ca> wrote:
No, there was a box called DQUNA or something like that too-- I used DELNI
and DQUNA boxes at a medical diagnostics manufacturer. I think maybe one of
them was a thin-net concentrator???
-----
399. [Pop Culture] A naked American man stole my balloons. --An American
Werewolf in London
--... ...-- -.. . -. ----. --.- --.- -...
tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio)
"HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters
43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square
EN53wc
WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531
I well remember linking VAXes together and
fighting with 2-metre loops of
thick-wire ethernet while banging those damned metal brick transceivers
around,
until DEC saved us all with that first 8-port
ethernet 'hub' (although the
transceiver cables were still a pain). (Am I correct in recalling it
was called
the DEQNA?).
DEQNA = Q-bus Ethernet (M7504), replaced by DELQA (M7516) and DESQA (M3127)
Maybe you meant DELNI = Digital Ethernet Local Network Interconnect,
which had 8 local AUI ports. 
9 Jan
9 Jan
6:28 p.m.
Tom Peters wrote:
No, there was a box called DQUNA or something like
that too-- I used
DELNI
and DQUNA boxes at a medical diagnostics manufacturer. I think maybe
one of
them was a thin-net concentrator???
The ThinWire "aggregator" was the DEMPR. It was a multiport repeater.
Basically 8 ThinWire ports out the front and an AUI out the back
so you could connect it to the backbone.
The DEREP was the original ethernet repeater. It joined two lengths of
cable (using a repeater) to make a longer length.
UNA was the abbreviation for a DECnet circuit over the DELUA (UNIBUS
ethernet adapter card).
The DEQRA was the Qbus Token Ring adapter.
The DEFQA was the Qbus FDDI adapter (nope, no idea why they made that
one :-)).
Antonio
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date:
08/01/2008 13:38
6:38 p.m.
On 9/1/08 23:28, "Antonio Carlini" <arcarlini at iee.org> wrote:
Tom Peters wrote:
You missed out the DEREN which was the correct answer to 'what shall I use
as a repeater device on the other end of my DEREP'
:)
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
No, there was a box called DQUNA or something
like that too-- I used
DELNI
and DQUNA boxes at a medical diagnostics manufacturer. I think maybe
one of
them was a thin-net concentrator???
The ThinWire "aggregator" was the DEMPR. It was a multiport repeater.
Basically 8 ThinWire ports out the front and an AUI out the back
so you could connect it to the backbone.
The DEREP was the original ethernet repeater. It joined two lengths of
cable (using a repeater) to make a longer length.
UNA was the abbreviation for a DECnet circuit over the DELUA (UNIBUS
ethernet adapter card).
The DEQRA was the Qbus Token Ring adapter.
The DEFQA was the Qbus FDDI adapter (nope, no idea why they made that
one :-)).
7:19 p.m.
Adrian Graham wrote:
You missed out the DEREN which was the correct answer
to 'what shall
I use as a repeater device on the other end of my DEREP'
The device on the other end of a DEREP-RA would be another DEREP-RA.
The technical manual says that for local use you use a single DEREP-AA,
using an AUI cable from each of the DEREP-AA AUI connections to
H4000 vampire taps on your two thickwire cables to be joined.
The remote repeater is made up of two DEREP-RA each of which
connects to a nearby thickwire ethernet cable via an AUI; the two
DEREP-Ras are connected by up to 1km of fibre.
I _think_ that the DEREN worked the same way (single for local
use, two for remote use), and I _think_ it was later than the
DEREP.
The installation manual for the DEREN-RA indicates that you could
put a remote bridge on the "other" end instead.
Antonio
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.17.13/1214 - Release Date:
08/01/2008 13:38
10 Jan
10 Jan
2:22 p.m.
On 10/1/08 00:19, "Antonio Carlini" <arcarlini at iee.org> wrote:
Adrian Graham wrote:
I remember this well, initially we were caught out because we were so used
to putting H4005s everywhere, I can't remember how we managed to rustle up a
pair of H4000s overnight :) I also remember getting grief from the local
Digits at RKG (DEC Gateshead was the 'Royal Kingdom of Geordies') because we
were breaking the 4-3-2 rule with a pair of DEREPs, they told us the correct
bridging setup was DEREP - DEREN.
You missed out the DEREN which was the correct
answer to 'what shall
I use as a repeater device on the other end of my DEREP'
The device on the other end of a DEREP-RA would be another DEREP-RA.
The technical manual says that for local use you use a single DEREP-AA,
using an AUI cable from each of the DEREP-AA AUI connections to
H4000 vampire taps on your two thickwire cables to be joined. I _think_ that the DEREN worked the same way (single
for local
use, two for remote use), and I _think_ it was later than the
DEREP.
The installation manual for the DEREN-RA indicates that you could
put a remote bridge on the "other" end instead.
This is probably what we were told to do, I can't remember what year this
was unfortunately.
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
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4 comments
3 participants
participants (3)
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arcarlini＠iee.org -
tpeters＠mixcom.com -
witchy＠binarydinosaurs.co.uk