HDTenEightyP/NetNews huggingface dataset:
From: seifert@netcom.com (Rich Seifert)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Fanouts, multiport transceivers...
Date: 11 Oct 92 19:49:46 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest)

In article <j=kp=a#@lynx.unm.edu>, opus@pioneer.unm.edu (Colby Kraybill) writes:
> 
> While recently crusing an Inmac catalog, I came upon a piece of equipment
> called a 'fanout.'  After much searching, I have decided to pose my
> question to this news group.
> 
> WTF is a fanout and how does it differ from a multiport transceiver?
> (except cost)
> 

In my experience, there is no difference among:
   Multiport transceiver
   Fanout box
   Transceiver multiplexer.


-- 
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.misc
From: duzan@nori.cis.udel.edu (Gary D. Duzan)
Subject: Re: ARCNET and Token Ring
Organization: Your Organization Could Be Here!
Date: Mon, 12 Oct 1992 20:20:32 GMT

In article <1992Oct12.021503.7597@nuscc.nus.sg> eletanjm@nuscc.nus.sg (Tan Jin Meng) writes:
=>I know almost nothing about ARCNET except that it is a token passing
=>architecture. 
=>
=>Question : 
=>What are the similarities and differences between ARCNET and Token
=>Ring? (this is really a question about what is ARCNET).
=>
   I know nothing of Token Ring, so I can't make comparisons, but I
have done some work with ARCNet. ARCNet is a 2.5Mbps token passing
network.  The node address is only 8 bits, so there is a fixed limit of
255 nodes on a single ARCNet (zero being reserved for broadcast
addressing). I have seen is running on coax and unshielded twisted
pair, and I have heard rumors of it running on fiber. I have also heard
rumors of 10 and 100Mbps versions under development. I have used ARCNet
in a mixed star/bus topology over UTP with a fair amount of success.
The max cable stretch is longer than 10BaseT as well, at 400 feet for
UTP (from an active hub).  Stability is good, especially if you use
intelligent hubs with one node per hub port. Node addressing can be a
bit of a pain since you have to keep track of them to assure that no
two nodes have the same address.  Otherwise, ARCNet seems to be a good,
if not terribly speedy, network.

=>Question :
=>I know that Token Rings are almost real time capable due to more predictable
=>response/delay times, allowance for priority etc (simplistically
=>speaking). How would an ARCNET implementation serve in this regard.
=>
   I would think that ARCNet would be a reasonable medium for real-time
systems (assuming that everyone else's idea of real-time matches mine. :-)
The only hitch I see is the additional reconfiguration delay incurred
when new nodes are connected to the network (or other, more melicious
things happen, like duplicate node addresses.) Bounded delay is always
going to be a difficult thing to achieve, I think.

                                        Gary Duzan
                                        Time  Lord
                                    Third Regeneration
                                      Two-Bit Hacker



-- 
                             duzan@cis.udel.edu
   _o_                       ------------------                         _o_
 [|o o|]       Virtual Reality? No thanks, I've already got one.      [|o o|]
  |_O_|       Disclaimer: I have no idea what I am talking about.      |_O_|
Newsgroups: comp.dcom.lans.misc
From: lcz@dptspd.sat.datapoint.com (Lee Ziegenhals)
Subject: Re: ARCNET and Token Ring
Organization: Datapoint Corporation, San Antonio, TX
Date: Thu, 15 Oct 1992 17:23:37 GMT

philipm@cs.kuleuven.ac.be (Philip Marivoet) writes:

>Now that we're talking about ARCNET, I'll be starting up an ARCNET related
>project soon but I'm having a bit of trouble finding documentation about
>ARCNET. I checked our university's library but I wasn't very succesful.
>Anyone who could give me some useful pointers ? (addresses/fax numbers/e-mail
>addresses/ftp sites/book or article references/...)
>Thanks in advance

Philip,

I'm not involved directly with ARCNET, but perhaps I can help.  You'll probably
want to get a copy of the "ARCNET Designer's Handbook", Datapoint publication
number 61610.  This has the technical details on ARCNET.  It covers the basic
concept of ARCNET, the link-level interface, the 9026 chip interface, and some
notes on network tools, operation, etc.  It does not cover the new ArcnetPlus,
which is the 20 Mb/sec version of ARCNET.  I don't know if there is a
designer's handbook out for ArcnetPlus yet.

You can buy a copy of this book by calling Datapoint in the U.S. at
800-733-1500, extension 7874.  I have no idea how much it costs.  If you
are outside the U.S. the number is +1-512-593-7874.

Lee Ziegenhals,
Datapoint Corporation
From: dcd123@cherry.ucsb.edu (Patrick O'Grady)
Newsgroups: comp.dcom.lans.misc
Subject: Anyone have experience with LON?
Date: 15 Oct 92 05:44:54 GMT
Organization: University of California, Santa Barbara


Greetings!  We are going into the development stage of a
LAN-based motion microcontroller.  The system will be a single-board
combination of an 80386SL CPU and an Analog Devices' 2105 DSP.

The controller will be communicated to via a high-speed network
connection.  My question is:  What system (both hardware and
software) would be best?  Some requirements include:

  o  Relatively 'dumb' nodes.  Since the CPU will be in charge
     of each microcontroller, and can require real-time response
     to (possibly) a *bunch* of stimuli, we can't devote a lot
     of CPU resources to network communication.  What systems
     require lots of processor overhead; and which ones are
     relatively automatic?  Furthermore, because several robots
     may need to coordinated their actions, nodes would have
     to be able to communicate with each other, without host
     intervention.

  o  Large host availablity.  We need to choose a system which
     can be communicated with by any of a bunch of host systems.
     Often times, PCs, Sun workstations, or other systems may
     be the most desirable hosts.  Fortunately, almost all hosts
     will be PCs, but we don't want that restriction.

  o  Bandwidth (of course).  Sometimes a machine will be in 'close'
     contact with something else.  Or a network may before long
     wind up with several hundred nodes.  This is an impossible
     question to answer, but after how long would we reach bandwidth
     limits?  I say impossible because it's entirely a function of
     our customers' programs.

  o  Real estate.  Board space is important, so the hardware involved
     needs to be minimal.


Whew!  I've just described the ideal network...wouldn't that be nice?
Anyway, I've investigated the LON system (Eschelon(sp?)/Motorola).  It
seems ideal...except for the development cost.  Does anyone have experience
with it?  Does anyone know of alternative ways to develop with it?  (I am
imagining renting a development system, or hiring a consultant;  both
these must be less expensive.)    Are there any other industrial standards
already in existence?  Are we just off on the wrong track altogether?

Please e-mail your responses, and thanks!
-patrick

Xref: sparky comp.dcom.lans.misc:815 comp.sys.mac.hardware:18789
From: wizard@greylady.uoregon.edu (KevinS)
Newsgroups: comp.dcom.lans.misc,comp.sys.mac.hardware
Subject: New Drivers for 3com Etherlink SE card
Date: 10 Oct 92 18:54:47 GMT
Distribution: comp
Organization: University of Oregon Chemistry Stores


Does anyone know where I can ftp new drivers for the 
3Com Etherlink SE card from?  The drivers I have are
rather old, version 2.0.

I tried most of the ftp sites I located via archie, but I
couldn't find any that had mac files.

Thanks

-Kevins
--
--------------------------------------------------------------------------
Wizard@greylady.uoregon.edu |           Kevin D Smolkowski. J.D.  
Kevins@ori.org              |
                            |     Play Nethack, visit exotic locations
We know more than you do!   |   meet interesting creatures, and kill them
--------------------------------------------------------------------------
Newsgroups: comp.dcom.lans.misc
From: duzan@gloin.cis.udel.edu (Gary D. Duzan)
Subject: Re: ARCNET and Token Ring
Organization: Your Organization Could Be Here!
Date: Thu, 15 Oct 1992 15:40:59 GMT

In article <1992Oct15.142724.29157@cs.kuleuven.ac.be> philipm@cs.kuleuven.ac.be (Philip Marivoet) writes:
>Now that we're talking about ARCNET, I'll be starting up an ARCNET related
>project soon but I'm having a bit of trouble finding documentation about
>ARCNET. I checked our university's library but I wasn't very succesful.
>Anyone who could give me some useful pointers ? (addresses/fax numbers/e-mail
>addresses/ftp sites/book or article references/...)
>Thanks in advance
>
>-Philip

   A good first step would be to contact SMC (Standard Microsystems
Corp.) at (800) 992-4762 (USA) or (800) 433-5345 (Canada) or (516)
273-3100 (anywhere else). They are a fairly major ARCNet equipment
manufacturer and can get you started on a search. Alternatively, you
can try contacting Datapoint Corp., the designer of ARCNet, but I don't
have a number handy.

                                   Gary D. Duzan
                                   Network Administrator
                                   Delaware State Hospital



-- 
                             duzan@cis.udel.edu
   _o_                       ------------------                         _o_
 [|o o|]       Virtual Reality? No thanks, I've already got one.      [|o o|]
  |_O_|       Disclaimer: I have no idea what I am talking about.      |_O_|
Xref: sparky comp.dcom.lans.misc:824 comp.dcom.lans.ethernet:2191 comp.sys.novell:8212 alt.bbs.internet:3972 alt.bbs:6473 comp.bbs.misc:1123
From: jeffa@comtch.spk.wa.us (Jeff Albrecht)
Newsgroups: comp.dcom.lans.misc,comp.dcom.lans.ethernet,comp.sys.novell,alt.bbs.internet,alt.bbs,comp.protocols.tci-ip.ibmpc,comp.bbs.misc
Subject: Telapi / Fossill coexistance possible
Date: 13 Oct 92 23:09:01 GMT
Followup-To: comp.dcom.lans.misc
Organization: CompuTech - Spokane, Washington

Pardon the repost. Going for wider distribution and additonal newsgroups. Plus
the Followup-To newsgroup last used was invalid. This should give those of you
who didn't answer the first time another chance ;-)

Is FOSSILL and TELAPI coexistence possible?

Goal: To telnet from a door on an ms/dos bbs running on NetWare 3.11 to 
a unix host coexistent on the same thinnet ethernet lan.

Problem: Apparently both the FOSSILL driver and the TELAPI program 
'grab'  INT 0x14 during telnet sessions. I can FTP with the FOSSILL and 
TELAPI loaded, but not telnet.

Hardware / software used: Netware 3.11, maximus bbs, X00 or BNU 
FOSSILL (a driver between bbs software and the com port), Novell Lan 
Workplace for DOS, Interactive unix SVR3, 386sx/16 netware workstation
with NE2000.

Questions: Is there a way to disable telnet/telapi from 'grabbing' INT 
0x14 during telnet sessions?

And/or I would like to use NCSA, perhaps even prefer NCSA. Would I have 
the same problem with NCSA as with Lan Workplace? I don't understand how 
to have a packet driver and the ipx/netx loaded concurrently with NCSA I 
have read that this is possible. Would someone be able to give an 
explanation of the software needed and the loading order? I do understand 
how to use NCSA successfully without Netware loaded.

Thanks!
-- 
Jeffrey H. Albrecht N7XFU                 jeffa@comtch.spk.wa.us
Spokane, WA                               ...uunet!tau-ceti!comtch!jeffa
Newsgroups: comp.dcom.lans.misc
From: dave@racer.lkg.dec.com (Dave Lyons)
Subject: Re: Need ethernet monitor for Ultrix
Reply-To: dave@racer.lkg.dec.com
Organization: TNSG - MCC Frameworks Technical Support
Date: Fri, 16 Oct 1992 22:13:49 GMT


|>In article <1992Oct14.153609.705@phri.nyu.edu>, roy@mchip00.med.nyu.edu (Roy Smith) writes:
|>|> 	Does anybody know of an ethernet monitoring program (something like
|>|> tcpdump or etherfind on a Sun) which will run under Ultrix 4.2 on a
|>|> DECstation 5000?

try tcpdump, which runs just fine on my DECstation 5000/200
From: chaynes@ncratl.AtlantaGA.NCR.COM (Chris Haynes)
Newsgroups: comp.dcom.lans.misc
Subject: Re: NETWORK TERMINOLOGY
Keywords: NETWORK, LAN, DEFINITIONS, TERMINOLOGY
Date: 15 Oct 92 13:45:01 GMT
Article-I.D.: ncratl.9622
Organization: NCR Engineering and Manufacturing Atlanta -- Atlanta, GA

In <1992Oct11.173325.27317@netfs.dnd.ca> mitchell@ncs.dnd.ca (Robert D.
Mitchell) writes:


> 
>Could someone please indicate where I can find a Glossary of terms
>relating to NETWORKS, LANS and the like.  The Glossary would ideally
>include descriptive specifications for such terms as 10 Base T, 10 Base
>5, etc.  eg; What is the difference between a concentrator and a hub?
> 
>Hoping to hear from someone.
> 
>Thanks.
> 

>Bob M.

Bob you may want to look at RFC 1208 "A Glossary of Networking Terms". This
can be had by sending mail to SERVICE@NIC.DDN.MIL with a subject line of
"RFC1208" for text or "RFC1208.PS".


Chris Haynes
NCR Corporation
Chris.Haynes@ncratl.atlantaga.ncr.com
Newsgroups: comp.dcom.lans.misc
From: lad@uni.ins.com (Lawrence A. Deleski)
Subject: Re: NETWORK TERMINOLOGY
Organization: International Network Services
Date: Wed, 14 Oct 1992 17:09:54 GMT

From article <1992Oct11.173325.27317@netfs.dnd.ca>, by mitchell@ncs.dnd.ca (Robert D. Mitchell):
> 
>  
> Could someone please indicate where I can find a Glossary of terms
> relating to NETWORKS, LANS and the like.  The Glossary would ideally
> include descriptive specifications for such terms as 10 Base T, 10 Base
> 5, etc.  eg; What is the difference between a concentrator and a hub?
>  
> Hoping to hear from someone.
>  
> Thanks.
>  
> Bob M.

My company, International Network Services, has such a guide.  If you'll
forward your address, I'd be glad to send you one!


-- 
        Lawrence A. Deleski         |       International Network Services
        lad@uni.ins.com             |       4701 Patrick Henry Drive
        uunet!uni!lad               |       Suite 1701
        MABELL:  (408) 496-1410     |       Santa Clara, CA 95054
Newsgroups: comp.dcom.lans.misc
From: todd@uhunix.uhcc.Hawaii.Edu (Todd Ogasawara)
Subject: Token Ring wiring distance
Organization: University of Hawaii at Manoa
Date: Tue, 13 Oct 1992 01:33:23 GMT

Is there a FAQ somewhere with information on specs for various kinds of
wiring? I'm specifically wondering about the max distance for Token Ring
wires from a MAU to a workstation. I'm interested in the max distance for
both Type 1 (shielded) and Type 3 (unshielded twisted pair) wiring.

Thanks...todd
--
Todd Ogasawara, U. of Hawaii, Psychology Department
BITNET:		todd@uhunix
INTERNET:	todd@uhunix.UHCC.HAWAII.EDU
From: add@philabs.philips.com (Aninda V. Dasgupta)
Subject: 2 station Token-Ring - problems with setting up.
Summary: I don't want to buy a MAU!!!!! What can I do instead?
Keywords: Token-Ring, MAU, DTAU, Onan Box, 9pin-to-9pin.
Organization: Philips Laboratories, Briarcliff, New York
Date: Thu, 8 Oct 1992 13:36:44 GMT

I am trying to setup my own little token-ring with just two stations
on it.  Every vendor I talk to, wants to sell me a MAU. I have
just two stations and I know that I will never expand this
network, why should I have to buy a MAU? Even two port MAUs are
so expensive I don't want to touch them....

My question to Token-ring gurus is, can I use/get any one of the 
following?

- A Dual Terminal Access Unit or DTAU (People within IBM call it an Onan Box
  because it is made by Onan, Inc., but nobody seems to know how to
  buy one.) A DTAU servers two purposes.  One can connect it to a Token-ring
  wall outlet and then hook up two computers to its two ports, thus essentially
  expanding a single-port wall outlet to two ports.  But by flipping a
  switch one can use the DTAU to simply connect two stations and not hook the
  DTAU to any wall-outlet, thus having a two-station ring.  Does anyone know
  what I am taking about, know where I can buy one of these boxes?

- A 9-pin to 9-pin cable that allows me to connect the two adapters on
  the two computers together?  Will such a cable work if I don't care
  about the fault detecting relays in a MAU?  (What else is a passive MAU
  good for other than the bypass-relays in it?)
  Any recommended vendors for such 9-pin to 9-pin (male to male) cables?
  I have tried BlackBox and Cabletron, didn't work.

- A Cheap 2-port MAU (within $250).  All the ones I have seen are way over
  my meagre budget.

It's so hard to believe that setting up a simple two-station ring requires
the purchase of so much extra junk that I don't need (read: an 8-port MAU.)

Any help will be greatly appreciated.  Thanks in advance.
-- 
Aninda DasGupta   (add@philabs.philips.com)
Ph : (914) 945-6071    Fax : (914) 945-6552
Philips Labs\n 345 Scarborough Rd\n  Briarcliff Manor\n NY 10510
(Gas from Phillips Petroleum, Antacid from Phillips Medical, Lightbulbs from us)
From: teague@acavax.lynchburg.edu
Newsgroups: comp.dcom.lans.misc
Subject: DECrepeater 200 segmentation error
Date: 15 Oct 92 11:14:56 -0500
Organization: Lynchburg College


Can some advise me as to what conditions will cause a port on a
DECrepeater 200 to fail with a segmentation error?  This is a local
repeater (DEREN-AA) which experiences a segmentation error every few
days or so on the port attached to a fiber transceiver.  I've
already tried switching the Ethernet connections between ports A and
B and the problem shifts ports as well.  Specifically, does a
segmentation error result from a physical problem (such as a bad
transceiver), a data link problem (such as a corrupt packet) or
can it result from either?

Please E-mail responses to teague@acavax.lynchburg.edu.

Thanks
---
Kipp Teague
VAX Systems Manager
Lynchburg College, Lynchburg, VA
From: seifert@netcom.com (Rich Seifert)
Newsgroups: comp.dcom.lans.misc
Subject: Re: DECrepeater 200 segmentation error
Date: 16 Oct 92 21:22:00 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest)

In article <1992Oct15.111456.33@acavax.lynchburg.edu>, teague@acavax.lynchburg.edu writes:
> 
> Can some advise me as to what conditions will cause a port on a
> DECrepeater 200 to fail with a segmentation error?  This is a local
> repeater (DEREN-AA) which experiences a segmentation error every few
> days or so on the port attached to a fiber transceiver.  I've
> already tried switching the Ethernet connections between ports A and
> B and the problem shifts ports as well.  Specifically, does a
> segmentation error result from a physical problem (such as a bad
> transceiver), a data link problem (such as a corrupt packet) or
> can it result from either?
> 

This type of error results from
  -An open cable
  -A shorted cable
  -A device failure whereby some station is regularly transmitting
on top of others, causing excessive collisions.

The segmentation is triggered by 64 (I think) successive collisions, or
a similar number of carrierSense failures.

It sound like you have an intermittent connector in your LAN.

-- 
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.misc,comp.dcom.servers
From: rjwalsh@maths.tcd.ie (Robert Walsh)
Subject: Automatic unloading of Netware Loadable Modules (NLM's)?
Keywords: Netware, NLM
Organisation: Amalgamated Durables
Organization: Dept. of Maths, Trinity College, Dublin, Ireland.
Date: Fri, 16 Oct 1992 15:29:13 GMT

I hope these are the right groups to post this to:

	Is there some way for unloading NLM's automatically, so it can become
	part of an automatic backup system (i.e. unload and backup
	automatically)?
-- 
rjwalsh@maths.tcd.ie
Robert Walsh
Student Computer Research Group
Trinity College, Dublin.
Newsgroups: comp.dcom.lans.misc
From: dazz@monu6.cc.monash.edu.au (Mr D.K. Woodman)
Subject: IBM LAN Server
Organization: Monash University, Melb., Australia.
Date: Thu, 15 Oct 1992 04:48:47 GMT

Is there a newsgroup devoted to IBM LAN Server or any ftp sources for
info/reports/discussions on it? o

I am specifically interested in how it differs from LAN Manager 2.1
and on how well it is supported by IBM and third-party vendors.

Does IBM recognise the existance of SNMP management and intelligent
hubs or are these tools meant to be provided by a third-party.

any replies appreciated
thanks
dazz
From: esx070@cck.coventry.ac.uk (Brevan Miles (esx070))
Newsgroups: comp.dcom.lans.misc
Subject: Network simulation packages
Summary: What is available
Keywords: Sources required
Date: 16 Oct 92 09:28:45 GMT
Followup-To: comp.dcom.lans.misc or e-mail
Organization: Coventry University


I want to find a network simulator that I can use for testing new media access
control algorithms and thence I will need source codes (preferably in C).
If you know of any can you let me know ASAP, as my project has to be approved 
by the end of the month. I will need to know who supplies it, where I can
contact them.
I am particulary interested in Simulators that I can adpat the MAC and
Data link layer sections on.

Many thanks,

Brevan  Miles,
School of Engineering
Coventry University (UK)
Xref: sparky comp.dcom.lans.misc:813 comp.protocols.misc:777 comp.protocols.ppp:830
From: louis@netronix.com (Louis Valentino)
Newsgroups: comp.dcom.lans.misc,comp.protocols.misc,comp.protocols.ppp
Subject: Question about HDLC and T1 retransmit timer?
Distribution: world
Date: Fri, 09 Oct 92 18:30:24 GMT
Organization: Netronix, Inc.

I'm looking for information about HDLC over T1 links. Specifically, if the
T1 interface retransmit timer has expired N times is the "application"
supposed to be notified?  Who has responsibility for setting N and what is
an upper bound for N.

Any references to HDLC docs, especially those available online, would also
be appreciated.   Thanks.  -LDV

|---------------------------------------------------------------------------|
|   Louis Valentino       "Netronix {domain usenet news mail modem} admin." |
|    Netronix, Inc.                                                         |
| 1372 N. McDowell Blvd.         USENET   : uunet!netronix!louis            |
|   Petaluma CA 94954            Internet : louis@netronix.com              |
| phone: (707) 769-3300                                                     |
| fax:   (707) 763-6291                                                     |
|---------------------------------------------------------------------------|
Xref: sparky comp.dcom.lans.misc:816 comp.protocols.misc:779 comp.protocols.ppp:832
From: art@acc.com (Art Berggreen)
Newsgroups: comp.dcom.lans.misc,comp.protocols.misc,comp.protocols.ppp
Subject: Re: Question about HDLC and T1 retransmit timer?
Date: 10 Oct 92 23:20:33 GMT
Organization: ACC, Advanced Computer Communications

In article <718655424snx@netronix.com> louis@netronix.com (Louis Valentino) writes:
>I'm looking for information about HDLC over T1 links. Specifically, if the
>T1 interface retransmit timer has expired N times is the "application"
>supposed to be notified?  Who has responsibility for setting N and what is
>an upper bound for N.
		   ^^^
   I assume N2 was meant, N1 is the frame size.

I'd say that it depends on the client using HDLC.  If the client needs a
reliable, connection oriented service, then Link Up/Down/Reset events should
be signalled.  If the client just needs a datagram service, then there may
not be a need.  If you are building a generalized service interface, for
multiple possible uses, I'd put in a full suite of control/status interface
primitives.

>Any references to HDLC docs, especially those available online, would also
>be appreciated.   Thanks.  -LDV

I's recommend getting the relevant ISO standards, but they are not going to
found online. (sorry I'm at home and don't have the numbers handy)

Art