HDTenEightyP/NetNews huggingface dataset:
From: brian@rex.chb.uokhsc.edu (Brian Fairless)
Subject: Re: LANtastic network cards
Originator: usenet@essex.ecn.uoknor.edu
Date: Tue, 15 Sep 1992 22:01:26 GMT
Distribution: usa
Organization: University of Oklahoma Health Sciences Center, OKC

In article <18l7kpINNbe6@matt.ksu.ksu.edu> brettw@matt.ksu.ksu.edu (Brett D. Watson) writes:
>  Anyone know off the top of their head:
>
>  Can I use ANY ethernet card with Lantastic or are the cards vendor
>specific?  I'm assuming from the older cards we have that they must
>come from Artisoft.  I thought they must be different network cards
>since it's a peer-peer network op system.
>
>-=- Brett
>-- 
>  Brett Watson, 915 Calflin Rd. Manhattan, KS  66502, (913) 776-5951
>  ==================================================================
>	brettw@matt.ksu.ksu.edu | brettw@holonet.net

If you have the adapter independant version of Lantastic you can use a 
variety of ethernet cards ex. 3com, NE1000, NE2000 ...

If you have the older version of Lantastic where they supplied thier own 
cards then I think that you are stuck using thier cards.  Unless you can
find a low level driver that will interface with thier software.

Brian Fairless
University of Oklahoma
brian-fairless@uokhsc.edu
Newsgroups: comp.dcom.lans.ethernet
From: lazarea@mercury.ncat.edu
Subject: cascading multiport repeaters
Organization: North Carolina A&T State University
Date: Wed, 9 Sep 1992 13:02:47 GMT

i have a thickwire network with six transceivers connected to it. on
each transceiver i have a multiport transceiver. three are dec, three
are cabletron.

what would be the advantages or disadvantages of cascading the multiport
transceiver off of one single port tansceiver. or maybe cascading three
multiport transceivers off of two single port transceivers.

any thoughts would be appreciated. i am reading up on it but i do like
to hear from real people with real networks :-)

andy


-- 
Andy lazare                  internet  lazarea@garfield.ncat.edu
n.c. a&t state univ                    lazarea@mercury.ncat.edu
greensboro, n.c.             bitnet    lazarea@atsuvax1.bitnet
From: skipm@dorsai.com (Skip Mac-Stoker)
Newsgroups: comp.dcom.lans.ethernet
Subject: Cabling Specifications
Date: 9 Sep 92 06:26:06 GMT
Organization: The Dorsai Embassy +1.718.729.5018
X-Newsreader: Tin 1.1 PL4

Ooops! The Skipper goofed on the last post...

...Anyway : maybe some of the EtherNet.Netgh0ds out there could post an 
answer to this in the newsgroup or via mail to my address...

I'm ready to install/implement/sweat/leap-for-joy over a 10BaseT network 
that is replacing an awful existing ThinNet network that is one contiguous
segment over 2 sides of a building and two floors (I love it when my programmers
think the cable is in their way and disconnect both sides of the T...)

To ensure "upgradability" to new standards such as "CDDI" or ATM, is there
a specific cabling type I should insist my managers to approve P.O.'s to 
install on? I want to make sure that if there comes a need to install another
networking protocol/standard, my cable platform will be reasonably well-thought
out in advance to implement the newest marketing/technical disaster the best
of the industry can give us <chuckle>.

Thanks net.folks...

Skip
From: klitd@hpsgm2.sgp.hp.com (Raj PUBALA)
Date: Sat, 12 Sep 1992 14:30:42 GMT
Subject: Re: HELP: `Multiplexing' 10Base-T - is it possible?
Organization: HP Singapore Notes-Server
Newsgroups: comp.dcom.lans.ethernet

In comp.dcom.lans.ethernet, matcsp@nuscc.nus.sg (Chan Shih-Ping) writes:

    I have an office with just *one* 10Base-T outlet to a wiring hub which I do
    not have access to.  However I have two computers in the room each
    with a twisted pair nic (3COM etherlink II/16T if it matters).

    Is there such a thing as an inexpensive  hub which will allow
    me two connect the two computers and then connect itself to the
    single outlet.  Is this `daisy chaining`, `multiplexing` or
    `cascading` or what?  I am a novice to 10Base-T so I do not know
    what wiring is or is not possible.

    Thanks --
    Shih-Ping Chan
    Dept of Mathematics
    National University of Singapore
    matcsp@nuscc.nus.sg 
     
Yes, you can cascade an inexpensive 10BASET hub to your wiring hub. Your
two computers can connect to the inexpensive 10BASET hub. Please take note
of the following:-

There is a limit to the number of repeaters between between any target 
nodes that your two computers intends to communicate with (all within the
same physical segment, i.e. does not transverse a bridge/router). The limit
is 4 repeaters but if you go past a bridge/router, that count is reset to 
zero.

With regards to "inexpensive", you can go for those "purely" hardwarish
10BASET repeaters that does not have SNMP capability. You may find 10BASET
hubs will give you more ports than you can use.


If you were using thinnet or ThinLAN (10BASE2) cards on your computer, then
you can form a short thinnet or ThinLAN segment between your two computers 
and a ThinLAN to 10BASET transceiver. The 10BASET port of the ThinLAN to
10BASET transceiver can connect to your 10BASET outlet.


Please note that opinion expressed here is entirely my own and is 
independent of my employer.


Regards,

David LEE

Newsgroups: comp.dcom.lans.ethernet
From: seifert@netcom.com (Rich Seifert)
Subject: Re: Max Repeaters/multiport repeater wiring questions
Date: Sun, 06 Sep 92 20:58:34 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 

> A DELNI does not perform any of the tasks normally attributed to a repeater.
> A repeater:
> 	Amplifies the signal,
> 	Retimes the signal, and ensures that symmetry is within tolerance
> 	Sends it out on the next segment with a new preamble,
> 	Provides a Jam if a collision is seen on its one of its segments.
> 
> A DELNI can do none of these things.
> 	  

Well, to pick nits, a DELNI really does amplify the signal. It has a 
standard AUI receiver on each port, and a standard AUI driver on each
port. Thus, when it transmits, it sends at full signal amplitude,
even if the incoming signal was a lower level (due, e.g., to cable
losses).

Minor point.

-- 
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: scoggin@opus.ee.udel.edu (John K Scoggin)
Subject: Re: Bridging 2 lans
Organization: Delmarva Power & Light Company, Newark DE
Date: Fri, 11 Sep 1992 12:08:15 GMT

In article <1992Sep10.172230.13925@panix.com> ss@panix.com (Steve Steinberg) writes:
>My hospital has an off-site location linked by about 500' of 50 pair
>cable.  There is a small 10base2 LAN running there.  I would like to
>connect it to the hospital's backbone utilizing the 50 pair cable.  The
>solution that springs to mind is to buy a pair of remote bridges with V.35
>ports and utilize my (SL-1) PBX as a CSU/DSU at 56 Kbs.  This would run
>about $7k. 
>
>	1) How will the 56 Kb line effect performance of applications
>  	   running across it?  
>
	In general, they will be incredibly slow, if you are accustomed
	to a full Ethernet speed.  At worst, your applications' service
	requests may time out unless the timeout periods are increased.
	Depends a LOT on load.  56K is a pretty thin pipe if you are 
	doing a lot of NFS, for example.

>	2) Can anyone recommend a good remote bridge?  
>
	In general, Cabletron makes some nice stuff.  You might look at
	a T-1 (1.544 MBPS) remote bridge - the 500' is easily within the
	range of a T-1 without any intermediate repeaters.  A T-1 will
	give you very good performance in most cases.  If you need them,
	Black Box sells a T-1 repeater for around $700.

>	3) Is there another solution to the problem? 
>        	a) Is there another way to utilize the V.35
>           	   connection I have between the buildings
>  	
>	 or	 b) Is there another way to utilize the twisted pair
>           	    that is in place.  
>
	As I say above, a T-1 link would be preferable, if you can find
	a pair of remote bridges in your price range.

>My budget is $10k, but that seems like a lot of money.  What do you think? 
>Please post or e-mail your responses, I'll summarize if necessary and
>repost. 

-------------------------------------------------------------------------
John K. Scoggin, Jr.			Email:   scoggin@udel.edu
Supervisor, Network Operations			 scoggin@delmarva.com
Delmarva Power & Light Co.		Voice:	 302-451-5200
P.O. Box 6066				Fax:	 302-451-5321
Newark, DE 19714-6066
-------------------------------------------------------------------------
Your milage may vary.  Void where prohibited by law (or common sense).
Xref: sparky comp.dcom.lans.ethernet:1923 comp.periphs.printers:2665
From: brad@optilink.UUCP (Brad Yearwood)
Newsgroups: comp.dcom.lans.ethernet,comp.periphs.printers
Subject: Who makes good Ethernet printer adapters?
Date: 16 Sep 92 03:34:54 GMT
Organization: Optilink Corporation, Petaluma, CA

We'd like to connect a PostScript laser printer, most likely with a
parallel interface, to an Ethernet full of Sun machines.

Who makes good Ethernet printer adapters?  Who makes bad ones?  A
search of magazine ads has so far turned up only MiLAN.

Brad Yearwood   brad@optilink.com    {uunet, pyramid}!optilink!brad
Petaluma, CA
Newsgroups: comp.dcom.lans.ethernet
From: skishen@xanadu.intel.com (Sunil Kishen)
Subject: Delni improves response??? Explaination please.
Keywords: Dec DELNI, Auspex 5500
Reply-To: skishen@xanadu.intel.com (Sunil Kishen)
Organization: Intel Corporation, Santa Clara, CA USA
Date: Tue, 15 Sep 1992 18:06:20 GMT

Could somebody please explain.

We have an Auspex 5500 Network File Server whose Ethernet 0 was connected
to one of our routed subnets via an Allied Telesis Fiber Optic
Transceiver(fot).

The exact picture:


[auspex e0]-[fot]-------[Synoptics Fiber Hub]---[Cisco-router]-(other subnets)

Under the above configuration we were seeing very poor response for users
on the other side of the cisco router (other subnets). In the process of  
trouble shooting I connected the fot to a delni and from the delni I 
connected one to the ports to the Auspex and used one other ports to the 
connect a Sniffer.

Picture now:

[auspex e0]--[delni]--[sniffer]
               |
            [Fot]
	       |
	       |
	       |
           [Synoptics Hub]
	       |
	       |
	   [router]


From the moment I connected the delni the response times for the users
talking to the auspex improved dramatically. I removed the delni and
the response went bad again and improved when i reconnected the delni again.

Could someone explain why this could be happenning. In the process I also
replaced the fot, changed the segment to the router, changed the port on the
concentrator (only thing thats making the difference is the delni)

Pl. email your responses. ( I could provide more info. if needed)


__
Sunil Kishen
ICES Networking.
Intel Corp., Santa Clara.
Xref: sparky comp.dcom.lans.ethernet:1896 comp.dcom.lans.fddi:619 comp.protocols.tcp-ip:4395
From: neerma@nosc.mil (Merle A. Neer)
Newsgroups: comp.dcom.lans.ethernet,comp.dcom.lans.fddi,comp.protocols.tcp-ip
Subject: NDIS drivers
Keywords: NDIS,packet drivers
Date: 11 Sep 92 22:11:49 GMT
Organization: Naval Ocean Systems Center, San Diego, CA

I am trying to get PCNFS to work with an NDIS driver supplied by
Network Peripherals for their FDDI board (the EISA version).

The Network Peripheral documentation references a "NP-NDIS driver
for Microsoft LAN Manager Ver 2.0" and a "NP-PCNFS driver for SUN
NDIS". The "for" clauses have me confused:I thought the idea behind
NDIS (and, for that matter, ODI and packet driver) was that once
an NDIS-compliant device driver was produced for a particular net
card, it could interface with any NDIS-compliant protocol stack (like
PCNFS). It appears to me that in my particular situation, NP has
produced device drivers that talk to particular protocol stacks (and
yet they mysteriously use the NDIS label!). 

Of course, I dont get the PCNFS version. I get the other one (of
course, since I want the device driver to talk to PCNFS). No. It
doesnt work.

Perhaps, I misunderstand the NDIS business...but, I was excited to
find a device driver for the FDDI card that claimed "NDIS-ness" since
I have seen my PCNFS talk NDIS to my ether card...and, assumed, that
I had found a way to TCP over my NP card. By the way, if anyone has
a solution for this more general problem, feel free to offer it up.

Thanks in advance,
Merle
neerma at cod.nosc.mil
(619)553-4135
.
Newsgroups: comp.dcom.lans.ethernet,comp.sys.sun.misc,comp.unix.programmer
From: omerzu@quando.quantum.de (Thomas Omerzu)
Subject: How to use /dev/nit?
Reply-To: omerzu@quantum.de (Thomas Omerzu)
Organization: Quantum Software GmbH, Dortmund, Germany
Date: Mon, 14 Sep 1992 08:00:21 GMT



On a Sun sparc, I'm trying to read and write "arbitrary"
ethernet packets using /dev/nit, Sun's "network interface tap".

Although I'm able to read packets, it seems as if I cannot get 
anything out of the machine.

Has anyone here ever done this successfully?

Any hints are appreciated.




-- 
*--------------------------------------------------------------------------*
    Thomas Omerzu.            Internet: omerzu@quantum.de
 Quantum Software GmbH        Bitnet:   omerzu%quando@UNIDO.bitnet
   Dortmund,Germany           UUCP:     ...!unido!quando!omerzu
Newsgroups: comp.dcom.lans.ethernet
From: Havard.Eidnes@runit.sintef.no
Subject: Ethernet on fiber -- state of standards?
Originator: he@ugle.unit.no
Reply-To: Lars.Odegaard@runit.sintef.no, Havard.Eidnes@runit.sintef.no
Organization: SINTEF Runit, Norway
Date: Tue, 15 Sep 92 20:17:15 GMT

Hi,

I have a couple of questions concerning running Ethernet over fiber.

My information says 10Base-F (?) is either in draft or final standard form.
This standard is supposed to consist of two substandards -- 10Base-FB (Fiber
Backbone) and 10Base-FL (Fiber Link), the latter building on the industry
standard (?) FIORL (Fiber Optic Inter-Repeater Link).

We are interested in knowing what state this standard is in at present,
and a short summary wrt. its contents, particularly in the area of how many 
repeater links are allowed in an Ethernet constructed with use of equipment
conforming to this standard.

Please reply by mail (as well?) if you decide to follow this up.

- Havard
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 10Base-2 connection limits
From: Andy.Linton@comp.vuw.ac.nz (Andy Linton)
Date: Sun, 6 Sep 1992 22:36:40 GMT
Organization: Dept of Comp Science, Victoria Uni, Wellington, NEW ZEALAND


In article <12pns7_.seifert@netcom.com>, seifert@netcom.com (Rich Seifert) writes:
|> In article <Bu2EC7.1qr@world.std.com>, edwards@world.std.com (Jonathan Edwards) writes:
|> > I want to set up a small 10Base-2 network, and am thinking of running the
|> > coax as homeruns to the wiring panel for better fault tolerance.
|> > My question is whether I can avoid useing a hub, and just tie them together
|> > with a sequence of T-connectors? 
|> > Is there a specified limit to how far I can take this?
|> > 
|> 
|> No, No, NO, NO, NOOOOO!  10Base2 cannot be wired as a star as you describe.
|> It requires wiring as a linear bus, (aka daisy-chaining) from station-to-
|> station. If you want to use star-wired coax, a multiport-repeater must
|> be used at the star center (you may call this a hub, if you wish, but
|> I don't).

You could get a "star" configuration by running two lengths of coax from your
patch panel to each location that you want to connect and then connecting the
bus up with 'T' connectors and short jumpers at the patch panel. You'll chew up
your 180 metres fairly quickly doing this of course.

I'd go for 10BaseT. Even allowing for the cost of the hub - we pay under US$500
for one here in New Zealand - I'd recommend it. Naive users can't screw
everybody else by unplugging their workstation and if you put good cable in
you'll be able to upgrade to 100Mbps later. You can also use the cabling for
good old RS232, Appletalk if you need it. Invest in your cabling - do it right
and it will outlast your existing equipment by a couple of generations.

|> No "stubs" are allowed on 10Base2; the coax cannot branch using T
|> connectors anywhere. T connectors are used to attach stations to the
|> cable, with a short (zero) length tap.

Rich's point about "stubs" is spot on of course!
Newsgroups: comp.dcom.lans.ethernet
From: shall@fawlty1.eng.monash.edu.au (Dr SC Hall)
Subject: Bridge/switch/router for multicast addresses?
Keywords: multicast
Organization: Monash University
Date: Fri, 11 Sep 1992 02:18:50 GMT

I am developing a conferencing application on Ethernet, and want to
make use of the multicast (as distinct from broadcast) addressing
feature.  A problem arises when I want to work across more than one
Ethernet segment, because the bridge/switch/router needs to be able to
interpret these addresses.  I have been unable to get an answer out of
local vendors as to how their products treat multicast addresses.
Therefore, my question is: Does anyone know of an Ethernet
bridge/switch/router which CAN handle multicast addresses?  
Thanks in advance.

Stephen Hall              shall@eikona.eng.monash.edu.au
Centre for Telecoms and Information Eng.
Monash University
Australia
From: bennett@dstos3.dsto.gov.au
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 10Base-T over STP type 1
Date: 7 Sep 92 19:01:19 GMT
Organization: Defence Science and Technology Organisation

In article <1992Sep6.033240.6151@monu6.cc.monash.edu.au>, dazz@monu6.cc.monash.edu.au (Mr D.K. Woodman) writes:
> Can anyone tell me from personal experience what, if any, problems they
> have running 10Base-T over standard IBM type 1 (STP) cable.

I don't have real world experience of this, but here's a little info.  

UTP and its shielded equivalent are 100 ohm characteristic impedance, whereas 
Type 1 is 150 ohm.  Isolan (now 3Com) make hub cards etc designed for Type 1. 
I don't know of any other supplier doing that, so you may want to talk to your 
Isolan supplier.

Regards,

John Bennett                                E-mail: bennett@dstos3.dsto.gov.au
Head, Networks Group                        Phone : +61 8 259 5292
Corporate Information Systems               FAX   : +61 8 259 5537
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION Postal: Bld 73 Labs Area
AUSTRALIA                                           PO Box 1500 Salisbury 
            "Lord Warden of the Sync Ports"         South Australia  5108
                (DSTO Network Manager)              AUSTRALIA
Newsgroups: comp.dcom.lans.ethernet
From: toddi@mav.com (Todd Inch)
Subject: Re: 10Base-T over STP type 1
Organization: Maverick International Inc.
Date: Tue, 15 Sep 92 21:02:59 GMT

In article <1992Sep7.130119.164463@dstos3.dsto.gov.au> bennett@dstos3.dsto.gov.au writes:

>UTP and its shielded equivalent are 100 ohm characteristic impedance, whereas 
>Type 1 is 150 ohm.  Isolan (now 3Com) make hub cards etc designed for Type 1. 
>I don't know of any other supplier doing that, so you may want to talk to your 
>Isolan supplier.

I presume that the devices on both ends of the cable have to be designed for
150 Ohm impedance?  (E.g. the hub and workstation card?)

I'd hazard a guess that the normal stuff might work enough to confuse someone
but be unreliable?  :-)
Newsgroups: comp.dcom.lans.ethernet
From: gary@sci34hub.sci.com (Gary Heston)
Subject: Re: Sharp PC-3000 and LAN connectivity
Reply-To: gary@sci34hub.sci.com (Gary Heston)
Organization: SCI Systems, Inc., Huntsville, Al.
Date: Tue, 8 Sep 1992 18:07:51 GMT

In article <1992Sep2.233041.25474@state.systems.sa.gov.au> coexbgw@state.systems.sa.gov.au writes:
|I am hoping that someone can help me with a problem which I am having: namely
|connecting a Sharp PC-3000 (palmtop) computer to our LAN.  The connection to
|the LAN is through a pocket (parallel) adaptor, which the system just doesn't
|seem to recognise.  We have an Ethernet system, Novell IPX/SPX v3.01 running
|the Netware v3.02 workstation shell.  The adaptor is a Longshine unit.

Check the documentation and verify that the parallel port is really
bidirectional. If it is, check with Sharp and see if they have any
capacitors on the signal lines. I've run into this before, with desktop
systems we build. Our solution was to quit putting the cap on a clock line.



-- 
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.
    The most dangerous person in the world is Jessica Fletcher.
        Everywhere she goes, people die.
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: ThickWire repeaters...
From: graeme@ccu1.aukuni.ac.nz ( Graeme Moffat)
Date: Sat, 5 Sep 1992 05:07:19 GMT
Organization: University of Auckland, New Zealand.

pim@fct.unl.pt (Joao Paulo Pimentao) writes:

>We are considering using thick wire ethernet to connect two buildins
>on our campus. Later on we are going to replace it by fiber optics;
>but the easiest way and the fastest for us presently is to create a
>thick wire connection.
>Our thick wire cable may be near the maximum lenght that I believe is
>1 km.

Max length for thickwire is 500m.

>Could you please help me sugesting the best way to extend it.
>I think I can use repeaters to enlarge it with another km or so. Is
>this true? Could you point me to some repeaters?

Max of 2 repeaters will give length of 1500m
The DEC product is called a DEREP, there are now many AUI-AUI repeaters
available (eg IMC have dual-port repeaters)

-- 
Graeme Moffat                g.moffat@aukuni.ac.nz \ Time wastes us all, 
Computer Aided Design Centre,  Fax: +64-9-366-0702 /  our bodies & our wits
School of Engineering,    Ph: +64-9-737-999 x8384 /  But we waste time,
University of Auckland, Private Bag, Auckland, NZ \   so time & we are quits
From: kcone@ncrclm.ClemsonSC.NCR.COM (Kevin Cone)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 802.3 Non-Compliance (?)
Date: 11 Sep 92 14:10:01 GMT
Reply-To: kcone@ncrclm.ClemsonSC.NCR.COM (Kevin Cone)
Organization: NCR E&M CLEMSON Liberty, SC

In article <1071@rsp.UUCP> tom@rsp.UUCP (Thomas Ruf) writes:
>I've heard of at least one vendor who ships drivers that send frames that
>are longer than 2k in order to fit a 2k IPX packet and win a benchmark ....
>(max Ethernet size is 1518 bytes)

I strongly suggest naming the offending vendor publicly (and giving them
a chance to respond, of course).  If this is true, then interoperability
with other vendor's equipment is highly suspect.  I'd think the net
would want to know about it.
-- 
Kevin A. Cone                           e-mail:  Kevin.Cone@ClemsonSC.NCR.COM
Consultant Engineer                     s-mail:  7240 Moorefield Hwy.
NCR Workstation Products Div.                    Liberty, SC  29642
phone:  803-843-5085 (VP 624-5085)      fax:     803-843-1793 (VP 624-1793)
Newsgroups: comp.dcom.lans.ethernet
From: shall@fawlty1.eng.monash.edu.au (Dr SC Hall)
Subject: More on bridges/switches/routers and multicast
Organization: Monash University
Date: Wed, 16 Sep 1992 00:31:27 GMT

Thanks to those who responded to my previous query regarding the
handling of multicast Ethernet addresses.  I realise I should have
been a bit more specific, however.  What I require is _not_ that the
bridge should simply treat a multicast frame like a broadcast frame,
and forward it on all ports.  Rather, it should forward it on a
selected _subset_ of those ports, where the subset is defined during
some setup process.  I realise this is asking a lot, but without this
capability a lot of wasteful traffic will be generated in my
application (multiparty conferencing).  Does anyone know of a bridge
or similar device that fits the bill?

Stephen Hall
Centre for Telecoms & Info Eng.
Monash University
Australia