HDTenEightyP/NetNews huggingface dataset:
From: tdphette@mke.ab.com (Thad Phetteplace x4461)
Subject: Re: How to network 3-4 home machines cheaply?
Organization: Allen-Bradley Co.
X-Newsreader: Tin 1.1 PL4
Date: Tue, 15 Dec 1992 00:43:11 GMT

hens@snipe.cray.com (Tom Stephens) writes:
: 
: In article <1992Dec10.153444.9033@tinman.mke.ab.com>, tdphette@mke.ab.com (Thad Phetteplace x4461) writes:
: > css@tron.stx.com (Chris Shenton) writes:
: 
: > 
: > You cannot directly connect two 10BaseT trancievers,  You need some
: > sort of hub in the middle to assert the the signals properly.  I don't
: > have prices for 4-8 channel concentrators, we buy 100+ channel boxes
: > here at Allen-Bradley.  I'm guessing they are more expensive than
: > you'd be willing to pay.
: > 
: 
: This is not entirely true. For two nodes,  2 10BaseT tranceivers connected
: with UTP and RJ45's, WILL work.  Receive and transmit need to be flopped
: in the cable.  We are using this in several places here.  For networking 2
: nodes, this works great.  More than 2 nodes, then a hub is your choice.  I
: can send a wiring diagram to anyone who wants.
: --
: ---------------------------------
: Tom Stephens
: Corporate Computing and Networks, Chippewa Falls, WI
: Cray Research Inc.  hens@cray.com

After I stopped to think about it I saw my mistake.  The reason I though
a point-to-point 10baseT connection would have trouble was because of the
collision dection used by 10baseT.  Let me explain.  In 10base2 or 10base5
I believe collisions are detected by seeing the increased signal level
when multiple stations are attempting to talk at the same time.  This
is not the case with 10baseT.  In most twisted pair environments an
intelligent hub of some kind (such as a Synoptics concentrator) is
necessary for collision detection.  It monitors all of its ports and
sees when a signal is being transmitted on more then one of them.  It
then generates a *collision presence signal* and transmits it on all
ports.  This approach makes design of the transceiver much simpler.

My first thought was that the lack of an intellegent hub between two
10baseT nodes would mean no collision detection and thus an unreliable
connection.  I was right in assuming there is no collision detection.
But of course there doesn't need to be.  With separate transmit and
receive lines there can be no contention and thus no collisions.

OK.  Hopefully I've managed to yank my foot out of my mouth.  Thats
what happens when you let software types like me blather on about
hardware. :-)

--
Thad Phetteplace
Network Systems Analyst, Allen-Bradley Co.
Phone: (414)382-4461
Email: tdphette@mke.ab.com

The opinions expressed here are entirely my own and not that of my employer.
I am not a slob, I am simply doing an experiment in domestic entropy!
From: larry@elvis.NoSubdomain.NoDomain (Larry Pollack)
Newsgroups: comp.dcom.lans.fddi
Subject: Re: FDDI Beaconing Question
Date: 14 Dec 92 17:52:12 GMT
Reply-To: larry@xlnt.com
Organization: XLNT Designs, Inc.

In article <1081@rsp.UUCP>, tom@rsp.UUCP (Thomas Ruf) writes:
|> macomber@thoreau.nsc.com ( Robert Macomber) writes:
|> 
|> >It seems to me that this argument assumes that the ailing station
|> >is still capable of responding intelligently to a trace signal.
|> No, my assumption is that the CPU of the system in question is so dead
|> that is does not react to anything (e.g. an OS Kernel that just panic()'ed).
|> After the "global" trace, all good guys will run a path test and then
|> restart PCM. Even the "smart" PCM chips like the DEC/AMD/Moto PLC
|> will not cycle through PCM signalling without CPU intervention.
|> As a consequence, the neighbor's CFM (ahm, sorry CEM ) would isolate
|> the broken machine, so the customer has enough time and reason to
|> blame the vendor ..
|> -- 
|> Thomas Ruf	tom@rsp.de	Schneider & Koch GmbH
|> {uunet,mcvax}!unido!rsp!tom	Germany

In a multiprocessor environment, where one processor controls the PCM
for one or more ports and a second processor controls the MAC and the
station's configurations, it is possible for the MAC's processor to
stop while PCM is still able to operate. Hopefully, the designer of
such a system will have some mechanism in place to detect either the
stopped processor or lack of communication between processors.

-- 
/======================================================================\
| Lawrence J. Pollack                   |                              |
| XLNT Designs, Inc.                    | Voice   : 619-487-9320       |
| Internet: larry@xlnt.com              | Fax     : 619-487-9768       |
\======================================================================/
Xref: sparky comp.dcom.lans.fddi:879 comp.protocols.misc:895
From: rpw3@rigden.wpd.sgi.com (Rob Warnock)
Newsgroups: comp.dcom.lans.fddi,comp.protocols.misc
Subject: Re: XTP
Date: 19 Dec 92 05:11:42 GMT
Organization: Silicon Graphics, Inc.  Mountain View, CA

kjell@Xenon.Stanford.EDU (Kjell Saeten) writes:
+---------------
| I am interested in XTP over FDDI, and about half a year ago I read something
| about a XTP chips set, PE-1000. Does anybody knows anything about this ?
| PE stands for Protocol Engine, and I heard some rumour about economical
| problems?
+---------------

Protocol Engines, Inc. (PEI) has indeed recently closed its doors. I can't
comment on the possible availability of the PE-1000 chipset technology;
I suspect the matter is probably still being negotiated with PEI's investors.
[I will say more at a future time, if I can find out anything official.]

However, XTP is alive and well. It was never really very interdependent with
the chipset anyway -- there are several independent implementations out there
in the world -- and some time back Larry Green, one of the founders of PEI,
spun off two new companies to deal with XTP by itself.

One is called "The XTP Forum, Inc.", and is a non-profit organization for the
continued evolution of the XTP protocol, possible standardization activities,
etc. This includes the continuation of the XTP TAB (Technical Advisory Board)
and XTP RA (Research Affiliates) activities, more or less unchanged from the
way they were under PEI.

The other company is "XTP Systems, Inc.", which is a for-profit firm engaged
in continued development/licensing of the XTP KRM (Kernel Reference Model)
implementation of XTP (originally developed by PEI & SGI), as well as other
commercial XTP-related activities, I suspect.

Both may be reached at the following address (which may be familiar
to some as the former address of the Santa Barbara office of PEI):

        Larry Green  
	XTP Forum, Inc.            (or XTP Systems, Inc.)
        1900-D State Street
        Santa Barbara, CA  93101

	Phone: (805)965-0825  (answered as "XTP Forum")
	FAX:   (805)687-2984

(Currently their e-mail is non-functional, but a couple of us are trying
to help get them re-connected...)


-Rob

-----
Rob Warnock, MS-9U/510		rpw3@sgi.com
Silicon Graphics, Inc.		(415)390-1673
2011 N. Shoreline Blvd.
Mountain View, CA  94043
From: rkt@idacrd.UUCP (Robert Thomson)
Newsgroups: comp.dcom.lans.fddi
Subject: fddi cable plant course?
Summary: Does anyone know of a course on fddi cable installation?
Keywords: course, cable
Date: 16 Dec 92 19:26:53 GMT
Organization: idacrd, princeton, nj

Does anyone know of a couse on fddi cable installation?
From: koning@koning.enet.dec.com (Paul Koning)
Subject: Re: FDDI Specifications?
Reply-To: koning@koning.enet.dec.com
Organization: Digital Equipment Co., distributed systems architecture
Date: Mon, 14 Dec 1992 20:47:40 GMT


In article <1992Dec14.112108.3518@nic.csu.net>, Barry Blackburn <blackbub@sonoma.edu> writes:
|>Can anyone out there tell me the specifications for FDDI over multimode
|>62.5/125 micron
|>fiber optic cable?  I will have 4,000+ ft of cable installed to extend
|>our Ethernet (FOIRL 
|>or 10Base-F) and want to insure that this cable can later be used for
|>FDDI.  I would expect 
|>to have to install new connectors for FDDI.  What specifications (maximum
|>attenuation, etc) 
|>would I give to a contractor to insure that both the cable and
|>installation are up to specs?
|>
|>Thanks,
|>Barry Blackburn, Network Administrator at Sonoma State University
|>blackbub@sonoma.edu
|>1801 E. Cotati Ave.
|>Rohnert Park, CA 94928
|>(707) 664-9180

4000 feet should be fine so long as the right cable is used and splicing
is done with adequate care.  If you choose connectors carefully, you may
be able to avoid changing them later -- pick one for which there are patch
cords going both to your current Ethernet equipment, and to the FDDI
connector type.  ST may be a good choice, but check what type of
patch cords are available.

The relevant standard is the ANSI PMD standard, X3.166.

	paul
!-----------------------------------------------------------------------
! Paul Koning, NI1D, A-13683
! Digital Equipment Co., LKG1-2/A19, Littleton, MA 01460, USA
! (508) 486-7313 or (508) 952-3344, koning@koning.enet.dec.com
!-----------------------------------------------------------------------
! "The only purpose for which power can be rightfully exercised over 
!  any member of a civilized community, against his will, is to prevent
!  harm to others.  His own good, either physical or moral, is not
!  a sufficient warrant."    -- John Stuart Mill, "On Liberty" 1859
Newsgroups: comp.dcom.lans.fddi
Subject: FDDI Specifications?
From: Barry Blackburn <blackbub@sonoma.edu>
Date: 14 Dec 92 11:21:06 PST
Distribution: world
Organization: Sonoma State University
X-UserAgent: Nuntius v1.1.1d1

Can anyone out there tell me the specifications for FDDI over multimode
62.5/125 micron
fiber optic cable?  I will have 4,000+ ft of cable installed to extend
our Ethernet (FOIRL 
or 10Base-F) and want to insure that this cable can later be used for
FDDI.  I would expect 
to have to install new connectors for FDDI.  What specifications (maximum
attenuation, etc) 
would I give to a contractor to insure that both the cable and
installation are up to specs?

Thanks,
Barry Blackburn, Network Administrator at Sonoma State University
blackbub@sonoma.edu
1801 E. Cotati Ave.
Rohnert Park, CA 94928
(707) 664-9180
From: jlt1@crosfield.co.uk (john tricker)
Newsgroups: comp.dcom.lans.fddi
Subject: Low cost concentrator
Date: 18 Dec 92 11:52:35 GMT
Organization: Crosfield Electronics, Hemel Hempstead, United Kingdom.


	I am currently experimenting with of small ( < 5 SAS's over < 100m ) 
FDDI networks. In these configurations large concentrators represent a 
significant portion of the total network cost. I would like to obtain a 
minimal, low cost, concentrator with the following spec ...

	2 to 4 STP or UTP M ports.
	No A,B or S ports.
	No MAC.

	Does anyone currently manufacture such a product or have plans to do so
within the next 6 months ?

	Thank you for any information ...

-- 
---------------------------------------------------------------------------
#include <discliamer.std>  \_^o.  ->>>	jlt1@crosfield.co.uk	<<<-
--------------------------_ LL __------------------------------------------
Newsgroups: comp.dcom.lans.fddi
From: John Horn <jhorn@arco.com>
Subject: Re: fddi cable plant course?
X-Xxmessage-Id: <A757A56C62013331@horn.is.arco.com>
X-Xxdate: Fri, 18 Dec 92 23:57:32 GMT
Organization: ARCO Exploration & Production Technology
X-Useragent: Nuntius v1.1.1d15
Date: Fri, 18 Dec 1992 21:57:24 GMT

From: Robert Thomson, rkt@idacrd.UUCP
Date: 16 Dec 92 19:26:53 GMT
In article <1814@idacrd.UUCP> Robert Thomson, rkt@idacrd.UUCP writes:
>Does anyone know of a couse on fddi cable installation?

For what it's worth, Learning Group International (aka "the learning
tree") offers a course titled "Introduction to Fiber Optic
Communications". The course content lists topics referring to "cables and
installation techniques" and "FDDI and LANS". 
Four day course, List Price $1895.
I do not have personal experience with the course.
Newsgroups: comp.dcom.lans.fddi
From: larry@elvis.NoSubdomain.NoDomain (Larry Pollack)
Newsgroups: comp.dcom.lans.fddi
Subject: Re: FDDI Beaconing Question
Date: 14 Dec 92 18:02:04 GMT
Reply-To: larry@xlnt.com
Organization: XLNT Designs, Inc.

In article <tcvo6tc@rhyolite.wpd.sgi.com>, vjs@rhyolite.wpd.sgi.com (Vernon Schryver) writes:
|> 
|> [...some discussion deleted...]
|>
|> I still think it is important to not design and mandate in the standard
|> solutions for non-existent problems.  FDDI is mature.  Unless a
|> significant number of existing rings have seen this (or any) particular
|> problem, the standard should not be changed to "fix" it.
|> 
|> [...more discussion deleted...] 
|> 
|> Vernon Schryver,  vjs@sgi.com

I agree. The scenarios discussed for this particular problem require
_at_least_ two points of failure (I can come up with a single point
of failure, but the coincidental timing of the events makes it
statistically insignificant). It is simply not realistic to put
every fault case into the standard.

This particular problem has shown itself more often than other
problems. However, this places where this occurs (like at multivendor
demonstrations) tend to have more "green" implementations than in a
production network. Assuming that this equipment goes through a
reasonable beta test, these kinds of problems should be ironed out
before production begins.

-- 
/======================================================================\
| Lawrence J. Pollack                   |                              |
| XLNT Designs, Inc.                    | Voice   : 619-487-9320       |
| Internet: larry@xlnt.com              | Fax     : 619-487-9768       |
\======================================================================/
Newsgroups: comp.dcom.lans.fddi
From: b_goodwin@saar.enet.dec.com ()
Subject: Re: FDDI Specifications?
Reply-To: b_goodwin@saar.enet.dec.com ()
Organization: Digital Equipment Corporation
Date: Wed, 16 Dec 1992 22:27:52 GMT


In article <1992Dec14.112108.3518@nic.csu.net>, Barry Blackburn
<blackbub@sonoma.edu> writes:
|>Path:
|
nntpd2.cxo.dec.com!nntpd.lkg.dec.com!news.crl.dec.com!deccrl!caen!spool.
mu.edu!umn.edu!csus.edu!beach.csulb.edu!nic.csu.net!nuntius!blackbub
|>Newsgroups: comp.dcom.lans.fddi
|>Subject: FDDI Specifications?
|>Message-ID: <1992Dec14.112108.3518@nic.csu.net>
|>From: Barry Blackburn <blackbub@sonoma.edu>
|>Date: 14 Dec 92 11:21:06 PST
|>Distribution: world
|>Organization: Sonoma State University
|>Nntp-Posting-Host: computer_ctr.sonoma.edu
|>X-UserAgent: Nuntius v1.1.1d1
|>Lines: 17
|>
|>Can anyone out there tell me the specifications for FDDI over
|>multimode
|>62.5/125 micron
|>fiber optic cable?  I will have 4,000+ ft of cable installed to
|>extend
|>our Ethernet (FOIRL 
|>or 10Base-F) and want to insure that this cable can later be used for
|>FDDI.  I would expect 
|>to have to install new connectors for FDDI.  What specifications
|>(maximum
|>attenuation, etc) 
|>would I give to a contractor to insure that both the cable and
|>installation are up to specs?
|>
|>Thanks,
|>Barry Blackburn, Network Administrator at Sonoma State University
|>blackbub@sonoma.edu
|>1801 E. Cotati Ave.
|>Rohnert Park, CA 94928
|>(707) 664-9180
|>


Typical fiber : 62.5/125 graded index, multimode
Fiber length - multimode: 2km
Link loss budget - multimode: 11db
Connector type: Media Interface Connector (MIC)
	You might want the check with the manufacuture of the fddi equipment 
	you will use, some of them will use ST type connectors.
Xref: sparky comp.dcom.lans:2033 comp.dcom.lans.ethernet:2843 comp.dcom.lans.misc:1066
From: herberj@prism.CS.ORST.EDU (John Wesley Herberg)
Newsgroups: comp.dcom.lans,comp.dcom.lans.ethernet,comp.dcom.lans.misc,comp.sys.ibm.pc.net
Subject: 8-bit vs. 16-bit Ethernet
Date: 19 Dec 92 19:42:03 GMT
Article-I.D.: flop.1gvtubINNgeb
Distribution: world
Organization: CS Dept, Oregon State University
NNTP-Posting-Host: prism.cs.orst.edu


We're currently in the process of installing an ethernet & have the option 
of 8-bit or 16-bit.  My question is, is there a signifactly noticable difference
in performance?  Will it produce connectivity problems in the future?  If our
environment(described below) won't notice the difference, when is a
difference noticable?  What if we add 1-4 X-Terms?

The network would involve a range of 6-20 users w/the following boxes:
	1-4 unix machines
	6-20 40 mhz 386/SX PC's

Please respond by e-mail as I'm not a regular reader of these groups(at least
not yet).

Any & all help appreciated,
-- 
-----------------------------------------------------------------------
John W. Herberg	     		      Internet: herberj@prism.cs.orst.edu
Newsgroups: comp.dcom.lans,comp.dcom.lans.ethernet,comp.dcom.lans.misc,comp.unix.admin
From: hens@snipe.cray.com (Tom Stephens)
Subject: Re: How to network 3-4 home machines cheaply?
Organization: Cray Research, Inc.
Date: 14 Dec 92 09:43:08 CST


In article <1g9ps1INN12l@iraul1.ira.uka.de>, becker@iras2.ira.uka.de (Klaus Becker) writes:
> In article <1992Dec10.165442.3110@walter.cray.com>, hens@snipe.cray.com (Tom Stephens) writes:
> 
> 
> > This is not entirely true. For two nodes,  2 10BaseT tranceivers connected
> > with UTP and RJ45's, WILL work.  Receive and transmit need to be flopped in
> > the cable.  We are using this in several places here.  For networking 2 nodes, 
> > this works great.  More than 2 nodes, then a hub is your choice.  I can send
> > a wiring diagram to anyone who wants.
> 
> Maybe this answer is misleading too.
> You can make up a point-to-point connection
> of two twisted-pair transceivers with the 
> "flopped" pins.
> 
> You can attach more than two nodes to
> the transceivers.
> The original configuration (3 UNIX and 1 LISP)
> would work with a 4-Port-Transceiver
> and a Single-Port Transceiver.
> 

Good Point.
Thanks for clarification Klaus.


Tom
--
---------------------------------
Tom Stephens
Corporate Computing and Networks, Chippewa Falls, WI
Cray Research Inc.  hens@cray.com
Newsgroups: comp.dcom.lans.hyperchannel
From: cearr@cwis.unomaha.edu (Jesse C. Neese)
Subject: Where to find CYBERSPACE VANGUARD
Organization: University of Nebraska at Omaha
Date: Mon, 14 Dec 1992 18:39:46 GMT

Can you blazon that?

CEARR


Newsgroups: alt.heraldry.sca
From: cr11@cunixf.cc.columbia.edu (Carlos Rodriguez)
Subject: Re: clan info
Reply-To: cr11@cunixf.cc.columbia.edu (Carlos Rodriguez)
Organization: Columbia University
Date: Thu, 17 Dec 1992 16:15:45 GMT

In article <16DEC199209565048@tirith.carleton.edu> LAMBERTN@CARLETON.EDU writes:
>Hello.  I was wondering if anyone out there (is there anyone out there? ;> )
>knows of any source through which I could find more information about my clan? 
>Specifically, our tartan and coat of arms.  The clan is Irish, the Kelleys (I
>have the gaelic name somewhere, I can post it if neccessary).  
>
>Also, does anyone have any information on the O'Ciardubhain clan (my persona is
>an O'Ciardubhain, and I'd love more information about them.)?
>
>--Bealltaine O'Ciardubhain
>
>~-----------------------------------------------------------------------------~
>| Nikita "Kii" Lambert           |        LOVE IS THE LAW  --Queer Nation     |
>| major: Classical Studies       ~--------------------------------------------~
>~--------------------------------~   Gin I were a baron's heir,               |
>|lambertn@morgul.acc.carleton.edu|   And could I braid wi' gems your hair,    |
>~--------------------------------~   And make ye brauw as ye are fair,        |
>|"O I forbid ye, maidens a'      |   Lassie, would you lo'e me?               |
>| That wear gowd in your hair    ~--------------------------------------------~ 
>| To come or gae by Carterhaugh  |  Love and scandal are the best sweeteners  | 
>| For young Tam Lin is there..." |      of tea.                               |
>~--------------------------------~--------------------------------------------~
Hello
I think that I can help you in your search.  First of all as far as my knowledge of tartans goes ( I worked for several years at a Scottish Import store),
there are no Irish tartans.  The only exceptions are those clans that came derect from Ireland to Scotland: ex. MacDonald, Kennedy, etc.
As to your family's clan name, there are many books in your local lirary 
which can help you find this information.  One good book that I can mention
is BOOK OF IRISH NAMES byRonan Coghlan, Ida Grehan & P. W. Joyce.  It is
put out by Sterling Publishing Co., Inc. of New York.  The book gives a short
history of the clan above which is placed in color the coat of arms.  It also
gives you various spellings of the name.
I hope that this is of help to you.  Good Luck
Carlos Rodriguez ( Ruardhrigez = Celt Form; Son of Hrodthik = Visigoth Form)













Newsgroups: alt.heraldry.sca
From: lambertn@tirith.carleton.edu (Alas, my love, you do me wrong...)
Subject: clan info
Organization: Carleton College
Date: Wed, 16 Dec 1992 14:56:00 GMT
News-Software: VAX/VMS VNEWS 1.40    
Reply-To: LAMBERTN@CARLETON.EDU
X-Posted-From: tirith.acc.carleton.edu
NNTP-Posting-Host: sol.ctr.columbia.edu

Hello.  I was wondering if anyone out there (is there anyone out there? ;> )
knows of any source through which I could find more information about my clan? 
Specifically, our tartan and coat of arms.  The clan is Irish, the Kelleys (I
have the gaelic name somewhere, I can post it if neccessary).  

Also, does anyone have any information on the O'Ciardubhain clan (my persona is
an O'Ciardubhain, and I'd love more information about them.)?

--Bealltaine O'Ciardubhain

~-----------------------------------------------------------------------------~
| Nikita "Kii" Lambert           |        LOVE IS THE LAW  --Queer Nation     |
| major: Classical Studies       ~--------------------------------------------~
~--------------------------------~   Gin I were a baron's heir,               |
|lambertn@morgul.acc.carleton.edu|   And could I braid wi' gems your hair,    |
~--------------------------------~   And make ye brauw as ye are fair,        |
|"O I forbid ye, maidens a'      |   Lassie, would you lo'e me?               |
| That wear gowd in your hair    ~--------------------------------------------~ 
| To come or gae by Carterhaugh  |  Love and scandal are the best sweeteners  | 
| For young Tam Lin is there..." |      of tea.                               |
~--------------------------------~--------------------------------------------~
Newsgroups: alt.save.the.earth,sci.environment,talk.environment
From: rpj@beta.lanl.gov (Richard Jenks)
Subject: Re: E-Link: Ticket America Campaign
Organization: Los Alamos National Laboratory
Date: Sat, 12 Dec 1992 15:01:27 GMT

In article <0f_BK9y00iUz03IWV_@andrew.cmu.edu> env-link+@andrew.cmu.edu (Student Enviro-Link) writes:
>This spring, we're launching the national TICKET AMERICA direct
>action campaign.  We expect it to be controversial and provocative. 

An interesting campaign... Another potentially-useful campaign would encourage
people to "telecommute" or use "teleportation" to work from home and/or
transport their abilities via telecommunications.  These techniques, where
feasible, may help to reduce highway usage and the associated energy,
environmental, and social problems that current commuting methods give us.

-- 
Rick Jenks, Staff Member       | Voice1   505-667-0912  |  "Strike while
Los Alamos National Laboratory | Voice2   503-493-2212  |   the iron is
Mailstop K551                  | FAX      505-665-3167  |   hot"
Los Alamos, NM  87545  USA     | Internet rpj@lanl.gov  |