HDTenEightyP/NetNews huggingface dataset:
From: pccl@cbnewsd.cb.att.com (paul.c.liu)
Newsgroups: comp.dcom.lans.ethernet
Subject: tri-port ethernet transceiver
Keywords: fan-out converter: FOIRL + AUI + 10BaseT
Date: 11 Nov 92 23:58:33 GMT
Article-I.D.: cbnewsd.1992Nov11.235833.11743
Distribution: usa
Organization: AT&T Bell Labs

Is there a "magic" ethernet fan-out transceiver off-the-shelf
that has three ports: FOIRL (ST connectors), AUI, and 10 BaseT.

Vendor reference, price tag info are most appreciated!

Paul.C.Liu@ATT.COM
Newsgroups: comp.dcom.lans.ethernet
From: seifert@netcom.com (Rich Seifert)
Subject: Re: 10 base 5 to 10 base 2
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Date: Sat, 14 Nov 1992 01:36:32 GMT

In article <Bxo5KM.JyH@constellation.ecn.uoknor.edu>, brian@rex.chb.uokhsc.edu (Brian Fairless) writes:
> I am wanting to go from a thick net segment to a thin net segment without
> going through a repeater. I thought of using a connector that went from thick
> to bnc thin, Is this legal? even if it a short, say 1 to 2 meter
> piece of thin net.

It is not "legal", but the network police will not read you your rights
and drag you away. It will work fine, as long as none of the other 
network parameters (lengths, numbers of stations, repeaters, etc) is
near the limit of the specification.

-- 
Rich Seifert                    Networks and Communications Consulting
seifert@netcom.com              (408) 996-0922
                                (408) 996-2860 FAX
"... specialists in Local Area Networks and Data Communications systems"
Newsgroups: comp.dcom.lans.ethernet
From: rich@grebyn.com (Richard Lawrence)
Subject: Re: Converter from RJ45 to BNC  (make that AUI!)
Organization: Grebyn Timesharing
Date: Fri, 6 Nov 1992 05:59:13 GMT

In article <1992Nov4.161705.29581@umbc3.umbc.edu> themos@umbc5.umbc.edu (Mr. Themos Pentakalos; ADMIN-COMP) writes:
>
>So, once again.... Is there a device that converts from RJ45 to
>AUI right on the back of the card? Black Box has one for $140.00
>dollars and someone mentioned a company called St. Clair. Any more
>ideas?

The Synoptics model 928 transceiver does what you want. To be fair, I
believe Cabletron and at least one other manufacturer (HP?) makes a
transceiver that converts from AUI to UTP right off the back of the
card.

I'm sorry, but I can't remember the price. 408-988-2400 is the corporate
number, they'll have it.


-- 
Rich Lawrence, Synoptics Systems Engineer  DOD#9630  rich@grebyn.com
     '92 Seca II "Yuri"  CI$:71101,2272  GEnie:R.LAWRENCE14
   216 years ago my government gave me certain inalienable rights.
     Since then, they've been trying to correct their mistake.
Newsgroups: comp.dcom.lans.ethernet
From: lfm@pgroup.com (Larry Meadows)
Subject: Re: Converter from RJ45 to BNC (make that AUI!)
Date: Thu, 5 Nov 1992 14:04:44 GMT
Distribution: na
Organization: The Portland Group, Portland, OR

1. You all know, I hope, that Black Box typically charges lots more than
everyone else.  They do have a very wide selection, though.

2. As an earlier poster pointed out, transceivers are available from
Allied Telesis for around $40-45.  I bought mine from Tech Data for $41
in small quantities.

3. I'd think that using an transceiver and an AUI port would be more
reliable than a balun to a BNC -- and I've never really trusted those
on-card BNC transceivers anyway.  Of course, I could be wrong.
-- 
Larry Meadows		The Portland Group
lfm@pgroup.com
Newsgroups: comp.dcom.lans.ethernet
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Are the 3C501 cards any good?
Date: Tue, 10 Nov 1992 06:04:32 GMT
Organization: U of Toronto Zoology

In article <9NOV199215465488@elroy.uh.edu> st1r8@elroy.uh.edu (Guillot, Burt J.) writes:
> ... Basically, what I'm asking is ... is the 3C501 network
>card good or bad ... why or why not?

It's quite usable, but it is an old design, limited and slow.  Perfectly
usable if you don't expect miracles.  It's most unlikely that even good
software could get full Ethernet data-transfer rates out of one (although
on a slow processor like a 286, software is more likely to be the major
bottleneck).  You can also have trouble if you're talking to a fast
processor that likes to, say, send several packets in fast succession.

>If I want to add computers to my little network later, do I have to
>use 3C501 cards, or can I use any other cards that allow BNC cabling?

Ethernet is Ethernet; any Ethernet card will do, provided it's got the
right kind of cabling setup for you.
-- 
MS-DOS is the OS/360 of the 1980s.      | Henry Spencer @ U of Toronto Zoology
              -Hal W. Hardenbergh (1985)|  henry@zoo.toronto.edu  utzoo!henry
Newsgroups: comp.dcom.lans.ethernet
From: feng@latech.edu (Ina T. W. Feng)
Subject: Heard of the ALTA Ethernet card?
Organization: Louisiana Tech University
Distribution: usa
Date: Fri, 13 Nov 1992 05:28:06 GMT

Recently, I have been looking for an Ethernet card for the PC. I came
across the Alta 16bit Ethernet card selling for $129. This seems to
be a good price. However, I have never heard of the company before.
Has anyone used this card and what kind of performance is it capable
of? Also, is it compatible with software like PC-TCP or clarkson TCP 
software?

Thanks
From: robert@sys.sweden.dg.com (Robert Claeson)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Converter from RJ45 to BNC (make that AUI!)
Date: 6 Nov 92 13:58:07 GMT
Distribution: na
Organization: Data General AB, Akalla, Sweden

In article <1db79pINNm3f@symbi1.symbiosis.ahp.com>, aem@symbiosis.ahp.com (a.e.mossberg) writes:

> Err.. whoops. <blush> The product I mentioned, a balun, will not do the
> job. It is, as someone was kind enough to mention via email, for running
> thinnet over twisted pair, not converting to 10baset. For that, you do
> indeed need a repeater.  Someone else did mention in an article that
> a cheap 10baseT transceiver is made you could connect in to the AUI port.

We use devices from Milan when we need to run 10base2 in a room that
just has 10baseT cables running to it.

-- 
------------------------------ END OF MESSAGE ------------------------------
Robert Claeson                Internet: robert@sys.sweden.dg.com
Data General AB                         robert@sys.dg.se
Box 28                             CEO: robert@sys.sweden.dg.com:dg-smtp
S-164 93 KISTA                     Tel: +46 (0)8-92 55 00
Sweden                             Fax: +46 (0)8-751 36 22
Newsgroups: comp.dcom.lans.ethernet
From: sysrick@starbase.spd.louisville.edu (Rick McTeague)
Subject: Second try: Cabletron MR9000C Port Hangs?
Date: Fri, 13 Nov 1992 03:51:12 GMT
Organization: University of Louisville

I have a couple of Cabletron MR9000C multiport thinwire repeaters
(DEMPR equivalents), and I've had a couple of problems with ports
getting hung. When this happens, the "Fault" light for the port
turn on continuously, and nothing will cause it to clear except
cycling the repeater's power.

As far as I know, there's no problem on the cable itself, as I 
can connect it to another port and it works. Even if there were a
problem with the cable, the fault light on the port should clear
when it had a good cable (or a 75 ohm terminator) - but it doesn't.

Has anyone else seen this happen? Does anyone have an explanation?

Thanks,
Rick
-- 

Rick McTeague
Electrical Engineering Department, Speed Scientific School
University of Louisville, Louisville, KY 40292
(502) 588-7020

Internet: sysrick@starbase.spd.louisville.edu

Disclaimer: I'm a stand-up comedian; if anyone takes me seriously, I'm
            doing something wrong!
From: ics.oscar@Control.Com (Oscar G Rhudy)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Converter from RJ45 to BNC (make that AUI!)
Date: 6 Nov 92 18:54:28 GMT
Article-I.D.: Control.HPZTTB1w164w
Reply-To: ics.oscar@control.com
Organization: Industrial Computing Society

bj@unislc.uucp (Bruce Jones) writes:

> Does somebody have a phone # for Black Box (thats a company right?)
> 
Black Box Corporation on-line bulletin board is at (412) 746-7120
Black Box Corporation technical support is at (412) 746-5500
Newsgroups: comp.dcom.lans.ethernet
From: gary@sci34hub.sci.com (Gary Heston)
Subject: Re: Wanted: Description for SEEQ 8005 AEDLC
Keywords: Ethernet Controller Wanted Decription seeq 8005
Reply-To: gary@sci34hub.sci.com (Gary Heston)
Organization: SCI Systems, Inc., Huntsville, Al.
Date: Thu, 5 Nov 1992 20:58:37 GMT

In article <wol.720890288@flimnap> wol@flimnap.informatik.rwth-aachen.de (Jan Wolsky) writes:
|Hello out there,
|
|I need a description for the
|	Advanced Ethernet Data Link Controller 8005 by SEEQ
|I have a paper from SEEQ Technology, Incorporated, Number MD400031/C
|Section 'DATA COM', but it is from December 1989 and not with the latest
|information about its subject.
|
|Can anybody tell me, where to find a newer version ??

Try calling SEEQ. They'll probably be happy to send you one; I've never
had a chip vendor argue about data sheet requests.

-- 
Gary Heston    SCI Systems, Inc.  gary@sci34hub.sci.com   site admin
The Chairman of the Board and the CFO speak for SCI. I'm neither.
"...I looked out my window, and saw Kyle Pettys' car upside down, then I
thought 'One of us is in real trouble'." Davey Allison, re: a 150MPH crash
Organisation: European Space Operation Centre (E.S.O.C)
Date: Wednesday, 11 Nov 1992 08:56:03 CET
From: <RHUNTER@ESOC.BITNET>
Newsgroups: comp.dcom.lans.ethernet
Subject:     Possibly the most FAQ for Novell

What is the best way to run Novell & IP clients on IBM Token Ring,
IBM PC Network (Broadband) & of course Ethernet.

The Broadband will disappear in the medium term.

Require clients for Telnet with VT220 & 3270 emulation, FTP, DNS, Ping
plus full Novell access.

May also be nice to have remote printing to Suns using LPR
(outbound only from the PC)

I don't just want to rush out & buy Novell LAN Work Place without seeing what
the collective wisdom of the net says ;-)

Ray Hunter

Cray Systems on contract to the European Space Agency
#include <std.disclaimer>
RHUNTER@ESOC.BITNET
Newsgroups: comp.dcom.lans.ethernet
From: bray_eo@tamug.tamu.edu (Elliott O. Bray)
Subject: Re: Possibly the most FAQ for Novell
Summary: Multiple ethernet usage -Tcpip+Novell
Keywords: NOVELL,telnet,Internet protocols
Organization: Texas A&M University at Galveston
Date: Fri, 13 Nov 1992 13:56:27 GMT

In article <92316.085603RHUNTER@ESOC.BITNET> <RHUNTER@ESOC.BITNET> writes:
>Date: Wednesday, 11 Nov 1992 08:56:03 CET
>From: <RHUNTER@ESOC.BITNET>
>Subject:     Possibly the most FAQ for Novell
>What is the best way to run Novell & IP clients on IBM Token Ring,
>IBM PC Network (Broadband) & of course Ethernet.
>
>The Broadband will disappear in the medium term.
>
>Require clients for Telnet with VT220 & 3270 emulation, FTP, DNS, Ping
>plus full Novell access.
>
>May also be nice to have remote printing to Suns using LPR
>(outbound only from the PC)
>
>I don't just want to rush out & buy Novell LAN Work Place without seeing what
>the collective wisdom of the net says ;-)
>
>Ray Hunter
>
>Cray Systems on contract to the European Space Agency
>#include <std.disclaimer>
>RHUNTER@ESOC.BITNET


I have been using the Clarkson TN3270 package which uses packet drivers for 
access to tcpip.  The driver collection includes drivers for not only 
ethernet but a driver which encapsulates the packet on the token ring.
These from omnigate.clarkson.edu.  They also probably have a package 
called (?) odipkt  which uses an odi packet driver (comes from BYU) and 
links to NOVELL.

Long story short, I am running pc tcp/ip stuff from PCs which are networked 
using Novell Lite  all under windows 3.1.  I will admit, I havn't tried full 
novel but the drivers look like the same stuff.  Also can run this over T.R.

The only cost (other than my time) the Lite packages
Hope this helps.

-----------------------------------------------------------
Elliott Bray, Director                       bray_eo@tamug.tamu.edu
Academic Computer Center                            @tamug.bitnet
Texas A&M University at Galveston         
-----------------------------------------------------------
Organisation: European Space Operation Centre (E.S.O.C)
Date: Friday, 6 Nov 1992 16:14:36 CET
From: <TVERRALL@ESOC.BITNET>
Newsgroups: comp.dcom.lans.ethernet
Subject:    Ethernet Hubs

I would like some info please.
Is there some limit to the number of machines one should have on a
single segment hubnetwork ,this would be 4 hub with fibre optic inter-
hub connections. I do not want to have to located servers in the same
places as there hosts. I also do not wish do do any bridging.

Being new to this hub form of ethernet I have heard some limits bandied
about but would like to know from some of you that use them.

Thanks in advance.

Tim.
Newsgroups: comp.dcom.lans.ethernet
From: hoens@gmd.de (Guenter Hoens)
Subject: Re: Acceptable collision rate?
Organization: GMD, Sankt Augustin, Germany
Date: Fri, 13 Nov 1992 11:49:21 GMT

In <1992Nov12.005523.18145@exlog.com> mcdowell@exlogcorp.exlog.com (Steve McDowell) writes:

>I'm looking for common wisdom on what an "acceptable" or "normal"
>collision rate is in ethernet networks. Is it under 10 percent of
>all packets? Is it 40 percent? Should the acceptable level vary
>with the number of machines on the segment? 

>If you can, expound upon why you offer the number you do. 

in our opinion a collision-rate under 2 percent is acceptable.
if the collisionrate excceds 5 percent, there might be problems
on the ethernet.

under 2 percent we very seldom hear any complaints of the net-users,
but at collisionrates over5 percent usually the net-users start to
complain.

--
-----------------------------------------------------------------
* Guenter Hoens, GMD - I8, 
* German National Research Center for Computer Science
* hoens@gmd.de    (02241) 14-2408
Newsgroups: comp.dcom.lans.ethernet
From: hmikola@polaris.utu.fi (Hannu Tapio Mikola)
Subject: Win for Workgroups
Organization: University of Turku, Finland
Date: Tue, 10 Nov 92 18:21:35 GMT

Hello all beta testers and early birds! Any comments on Windows for Work-
groups? Is it better or equal to Lantastic for Windows. Does it work with
16-bit Lantastic cards? TCP/IP-connections? Any support for DOS-programs?

Hannu Mikola  hmikola.utu.fi 












Newsgroups: comp.dcom.lans.ethernet
From: mwr@eng.tridom.com (Mark Reardon)
Subject: Re: Are the 3C501 cards any good?
Reply-To: mwr@eng.tridom.com (Mark Reardon)
Organization: AT&T Tridom; Marietta, Georgia
Date: Wed, 11 Nov 1992 18:10:57 GMT

In article <9NOV199215465488@elroy.uh.edu>, st1r8@elroy.uh.edu (Guillot, Burt J.) writes:
|> I recently bought two 3C501 cards for $35/each recently.  I am using them
|> with Netware Lite and they seem to run okay, although a bit slow.  The
|> docs claim they can go 10 megabit/second, yet, when I run Norton's Network
|> performance test, I only get around 22-40K/sec rating (I believe).  My
|> uncle has some 1 megabit/second card and he gets around the same rate.
|> Shouldn't I be able to get ten times what he gets?

The 10 megabit/second rating of your cards is for the ethernet side.
That is the rate of all 10baseX devices.  The actual throughput you
see is really controlled by the processor and application you are
running.  If my math is correct 4Kbits/sec is a byte every 200 
microseconds.  That's not all that fast but then neither is a 286./8.

Your Uncle's cards sound like they're for one of the old 1 megabit
versions of Ethernet, Starlan, or Merlan.  This is again the network
bit rate and not the actual throughput.  If the processor is the
limiting factor, then it isn't suprising that you both get the same
throughput numbers.

|> 
|> For the price, they seem to perform well, I just thought they'd be a
|> little faster.  They are 8-bit cards running on a 286/8 and a 8088 that
|> has a 286/8 express card in it.
|> 
|> I might consider buying a few more at the same price in the future, but
|> I wanted to know if there are any other cards around the same price that
|> could do better ... Basically, what I'm asking is ... is the 3C501 network
|> card good or bad ... why or why not?

It is an older design but a pc card of any kind for $35 can't have much
margin for profit.  I doubt if you will find anything cheaper.

|> 
|> If I want to add computers to my little network later, do I have to
|> use 3C501 cards, or can I use any other cards that allow BNC cabling?
As long as the cards are for thin net ethernet (10Base2) or can be converted
to it you should be fine.  Just remember that if you put a 486 system in 
your network with a screaming ethernet card, you may not see high
throughput numbers unless the system at the other end is also such a
system.

-- 
Mark

---------------------------------------------------------------------
| Mark Reardon           |  AT&T Tridom                             |
| mwr@eng.tridom.com     |  840 Franklin Court                      |
|                        |  Marietta, GA 30067                      |
---------------------------------------------------------------------
 
Newsgroups: comp.dcom.lans.ethernet
From: cfkfb@uxa.ecn.bgu.edu (Karl Bridges)
Subject: data exchange ethernet/tokenring
Summary: Need information on data exchange between ethernet/tokenring
Organization: Educational Computing Network
Date: Fri, 13 Nov 1992 15:18:35 GMT

  I'm considering setting up a system where Mac users on a 4MB tokenring
are accessing a Mac on a separate network using ethernet at 10MB.  I'm
thinking of using file sharing with System 7.0 to give users access.
Has anyone any experience doing this kind of thing and could advise?
Newsgroups: comp.dcom.lans.ethernet
From: rich@grebyn.com (Richard Lawrence)
Subject: 100mbit Ethernet
Keywords: Ethernet Metcalf 100mbit 100Mhz
Organization: Grebyn Timesharing
Date: Thu, 12 Nov 1992 03:16:26 GMT

What does everybody think of the 100Mbit Ethernet announcement made by
Grand Junction? 

While the concept of a 100mbit signal isn't new, I find the makeup of
the company itself kind of interesting. For instance, Metcalf himself is
on the board of directors, if I read the PR announcement correctly. Does
anybody know if he was involved in the actual engineering, or is he just
a name contributor? Rich Seifert, do you know?

I understand Grand Junction (I think that's the right name, don't have
the article here with me) submitted to IEEE directly after their
announcement. Be interesting to see what comes out. I know for a fact
that ah, more than one intelligent hub vendor had been working on the
same technology. Ahem. 

For those that don't know, Metcalf is considered the leading designer of
original Ethernet at Xerox. He was also a key figure/the key figure in
the formation of 3Com. Most of the announced employees of GJ are former
3Com employees.

I'm not sure that just granted Ethernet a bigger pipe is going to fix
its problems with todays faster machines. For instance, I can't see
folks dropping several high bandwidth file servers on 100mbit Ethernet
over, say, FDDI. Even at a higher signal rate there's still the problems
associated with a contention based design - or are there other
differences besides just the signal speed? Is there a different
collision/back off algorhithm? Minimum/maximum packet size?
-- 
Rich Lawrence, Synoptics Systems Engineer  DOD#9630  rich@grebyn.com
     '92 Seca II "Yuri"  CI$:71101,2272  GEnie:R.LAWRENCE14
   216 years ago my government gave me certain inalienable rights.
     Since then, they've been trying to correct their mistake.
Newsgroups: comp.dcom.lans.ethernet
From: jcarroll@ferris.cray.com (Jeff Carroll)
Subject: Re: Please explain....
Originator: jcarroll@ferris
Organization: Cray Research, Inc.
Date: 5 Nov 92 21:56:14 CST



>IEEE address:
>
>Institute of Electrical and Electronic Engineers
>1730 Massachusetts Ave. N.W.
>Washington, DC 20036-1903
>(202)-371-1013

In case anyone still cares (or ever did), this is not a particularly useful
way to reach the IEEE for the purpose of ordering publications. The best way
to do *that* is to call (800) 678-IEEE, which (in case you're interested)
is answered in Piscataway, NJ.

Jeff Carroll
member, IEEE
carroll@cray.com
From: chesl@garnet.berkeley.edu (Gail Chesler)
Newsgroups: comp.dcom.lans.ethernet
Subject: token ring v ethernet - references sought
Date: 7 Nov 92 17:46:10 GMT
Organization: University of California, Berkeley
NNTP-Posting-Host: garnet.berkeley.edu

I need to get smart about the differences between the 
two topologies between now and Tues morning.  Has there
been a thread on anywhere?  or magazine article which is
good (i've read "the clash of the titans")?  Any 
suggestions gratefully received.  Will summary post if
traffic suggests it to be worthwhile.  Thanks, Gail
Chesler (chesl@garnet.berkeley.edu)
Newsgroups: comp.dcom.lans.ethernet
From: mitton@dave.lkg.dec.com (Dave Mitton)
Subject: Re: Are the 3C501 cards any good?
Reply-To: mitton@dave.lkg.dec.com (Dave Mitton)
Organization: Digital Equipment Corporation, Littleton MA
Date: Wed, 11 Nov 1992 22:52:18 GMT


In article <9NOV199215465488@elroy.uh.edu>, st1r8@elroy.uh.edu (Guillot, Burt J.) writes:
>Newsgroups: comp.dcom.lans.ethernet
>From: st1r8@elroy.uh.edu (Guillot, Burt J.)
>Subject: Are the 3C501 cards any good?
>Date: Mon, 9 Nov 1992 21:46:00 GMT
>

	The 3C501 was a pioneer cheap Ethernet card for PCs, however
it is a marginal (at best design).

	The 3C501 has one (count them 1!) packet buffer on-board.
It does not bus-master or do direct DMA.  Heck they couldn't even do that
when they were first designed.

	The board is blind to the Ethernet from the instant a packet is
received into that buffer, until the software copies that frame out
or resets the board.  Do want to send a frame?  Same problem!
You have to stop receiving and copy the frame in, wait for access, and
send it.  A collision? wait some more!

	3C501s can function fine when it's in a network of like speed
systems using the same software transmitting at the same rate.

	Put it in a network with blazing workstations that know how to
send bursts of packets (doesn't even have to be back-to-back) and performance
will fall into the dumper.  Some protcols, like NetWare, with hair-trigger
retransmit timers can persevere, but do so under duress.  Older NW benefited
also because it didn't pipeline.

	Use them for cheap self-contained nets, but look out if you hook
them up to something bigger.

	Dave Mitton
	former Mr. DECnet-DOS (V1 thru V3)
	Networks and Communications
	Digital Equipment Corp.
From: redsonja@src4src.linet.org (Red Sonja)
Newsgroups: comp.dcom.lans.ethernet
Subject: MAC address manufacturer ID list?
Date: 5 Nov 92 18:19:13 GMT
Organization: The Source for Source


Please excuse me if this is a FAQ. I am looking for a list, if one
exists, of the first three fields of an ethernet MAC address and the
corresponding manufacturers. If there is one floating around the net,
or someone who knows who to talk to at the IEEE about getting a current list,
please send email or post.

Thanks! 
redsonja@src4src.linet.org
self possession is 9/10 of the law.

-- 
------------------------------------------------------------------------------
redsonja@src4src.linet.org     \\\RS///    Self possession is 9/10 of the law.
------------------------------------------------------------------------------
Newsgroups: comp.dcom.lans.ethernet