HDTenEightyP/NetNews huggingface dataset:
Newsgroups: comp.dcom.lans.ethernet
Subject: 802.3 changed to require 802.2 header
From: nason@pa881a.inland.com
Date: 4 Sep 92 09:56:44 CDT
Organization: Inland Steel Company, East Chicago, IN
Nntp-Posting-User: englund

In article <JKT.92Sep3134856@seneca.SED.Provo.Novell.COM>, 
jkt@SED.Provo.Novell.COM (Jack Thomasson) writes:
> 

> unfortunately (as will happen), the standard changed to require 802.2
------------------------------------------------------------------------
I have been looking for this statement.  I have the ISO 8802-3 from 1990 and
cannot find this.  Can you tell me what version and where it changed.  

Thanks,
> 
My opinions are my own and not those of my company.  
Free advice is worth its cost.  
--- John M. Nason - NA9U ---|--------------------------------------------|
Inland Steel Company        |  -- nason@pa881a.inland.com                |
Process Automation MS 2-464 |  -- Fax:   219-399-7856                    |
3210 Watling Street         |  -- Voice: 219-399-2450                    |
East Chicago IN 46312       |"Ya can't shoot em till they stop sparklin" |
----------------------------|--------------------------------------------|
From: johnl@forthd.uucp (John Lebert)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Laptop Ethernet adaptors for use with PC-NFS
Date: 3 Sep 92 20:53:09 GMT
Reply-To: johnl@espace
Distribution: usa
Organization: Fourth Dimension, Portland OR

In article <1992Aug31.191948.28978@pt.com>, rkd@pt.com (Ray Downes) writes:
> I will likely have a need to interface a Laptop to an existing PC-NFS
> (revision 4.0a) "network", and was thinking of using one of the pocket
> adaptors (parallel port <-> 10baseT), via likely a NDIS driver. Anyone
> know of a source for these (hopefully that you seen work)? I've seen a
> Black box one (which seems about 2X "normal cost"), and one by Xircom.
> -- 
> Ray Downes, Performance Technologies Incorporated		rkd@pt.com
> 315 Science Parkway, Rochester, New York 14620		  
> Voice - (716) 256-0200, FAX (716) 256-0791

I have been using Zircom for 3 years without any problem.  The only time
I have ever bought anything from Black Box is when I couldn't get 
something anywhere else. Prices are to high...

John Lebert
Newsgroups: comp.dcom.lans.ethernet
From: ttoupin@zephyr.cair.du.edu (Tory Toupin)
Subject: Accessing a Server / Port
Originator: ttoupin@zephyr.cair.du.edu
Organization: University of Denver
Date: Fri, 11 Sep 92 15:57:23 GMT

comp.dcom.lans.ethernet

Hi :

I am writing a little data monitor and was wondering if there
are any folks out there who can answer a couple of questions for me.

I currently have a data monitor that watches for local node traffic
on the network BUT I would like to be able to specify a server and
port to monitor as well.  Simply :  I need to specify a server address
and a port and be able to snag that data.

I can get past the part of specifying the address and port and snagging the
data BUT here is the question :

	Can someone direct me to a manual that maintains the
	routing information specific to a server?

If you require more information to answer the question - please
feel free to write back.

Ed Toupin
toupine@casi.cba.du.edu
BACKUP : ttoupin@zephyr.cair.du.edu
From: kra@cunixa.cc.columbia.edu (Kenneth R Aron)
Newsgroups: comp.dcom.lans.ethernet
Subject: Help! QEMM & Ethernet conflict
Date: 10 Sep 92 02:41:24 GMT
Distribution: usa
Organization: Columbia University


	I am a relative novice at nets, currently involved in a
pilot program for an Ethernet network here at Columbia
University.  I am running and ALR 25386DX w/DOS 5.0 & QEMM.  If
QEMM is resident, the Ethernet software will lock up.  Only if I
bypass QEMM can I use the net. The installer told me to have QEMM
exclude D00-E00, but that didn't do the trick.  If anyone has a clue
how to fix this, drop me a line.  If you need more info (ie,
program names, etc) e-mail me as well.  Thanks.

Ken



Kenneth R. Aron                 NYS EMT-Defibrillation            | |  / /
kra@cunixa.cc.columbia.edu      Columbia Area Volunteer Ambulance | |/ / 
                                Columbia University, NYC          | |\ \
"EMTs do it with patience"                                        | |  \ \
Newsgroups: comp.dcom.lans.ethernet
From: ccewch@nuscc.nus.sg (Wong Chee Heng)
Subject: Re: what is SQE  (DUMB QUESTION!) :  No such thing...
Organization: National University of Singapore
Date: Mon, 7 Sep 1992 05:49:25 GMT

lstowell@pyrnova.mis.pyramid.com (Lon Stowell) writes:

:    Its cheaper to build a single model and include a jumper/switch
:    to disable SQE for those interfaces still unable to tolerate it.
:    Otherwise you'd have to build two separate models.  And for the
:    installer, you can always try just flipping the switch if it
:    doesn't work.  (some folks don't honestly know whether their
:    particular adapter is V1, V2, V1.5, or real 802.3...and neither
:    do a lot of datasheets....)   
: 
Do you mean that all the MAUs today can be used for all these standards?
What about the AUI cables?

--
Wong Chee Heng
Systems Programmer

Newsgroups: comp.dcom.lans.ethernet
From: milton@vivian.enet.dec.com (Tony Milton)
Subject: Re: cascading multiport repeaters
Reply-To: milton@vivian.enet.dec.com
Organization: Digital Equipment Corporation
Date: Mon, 14 Sep 1992 09:19:52 GMT


Cascaded DELNIs may NOT be connected to a thickwire segment, if you do
this you WILL have problems.
--
 +------------------------------------+--------------------------------+
 | Tony Milton                        | milton@vivian.enet.dec.com     |
 | Digital Equipment Corporation      | tony.milton@hhl.mts.dec.com    |
 | Digital Services, London, England. |                                |
 +------------------------------------+--------------------------------+
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Laptop Ethernet adaptors for use with PC-NFS
From: denny@alisa.com (Bob Denny)
Date: Sat, 12 Sep 1992 16:13:10 GMT
Distribution: usa
Organization: Alisa Systems, Inc.

In article <1992Aug31.191948.28978@pt.com>, rkd@pt.com (Ray Downes) writes:
> I will likely have a need to interface a Laptop to an existing PC-NFS
> (revision 4.0a) "network", and was thinking of using one of the pocket
> adaptors (parallel port <-> 10baseT), via likely a NDIS driver. Anyone
> know of a source for these (hopefully that you seen work)? I've seen a
> Black box one (which seems about 2X "normal cost"), and one by Xircom.

The Xircom Personal Ethernet Adapter 2 is excellent. It comes with ODI,
NDIS and packet drivers. I use it on my notebook to run DECnet and TCP/IP
simultaneously (NDIS of course). 

BTW, I am using Chameleon/NFS from NetManage which is fully Windows-
integrated (DLL's) including remote printing and NFS. On the DECnet side, I
am using DEC Pathworks (DECnet/DOS). It is not possible to connect to the
DECnet and NFS file servers simultaneously, but with NDIS I can use FTP and
DECnet "NFT" (like ftp), telnet, etc at the same time. Chameleon even has a
facility (MultiLAN) under Windows where you can switch between Pathworks
and NFS file serving _dynamically_ without rebooting Windows.

I wish more folks would adopt NDIS!
_______________________________________________________________________________
Robert B. Denny                                           voice: (818) 792-9474
Alisa Systems, Inc.                                         fax: (818) 792-4068
Pasadena, CA                         (denny@alisa.com, ..uunet!alisa.com!denny)
From: tom@rsp.UUCP (Thomas Ruf)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 802.3 Non-Compliance (summary and lesson)
Date: 4 Sep 92 17:19:47 GMT
Organization: RSP Datensysteme, W-Germany

jkt@SED.Provo.Novell.COM (Jack Thomasson) writes:

>ipx already uses the length field correctly;
Except for the fact that it requires you to only use even length values,
even so when the IPX packet has an odd length ...


Thomas
-- 
Thomas Ruf	tom@rsp.de	Schneider & Koch GmbH
{uunet,mcvax}!unido!rsp!tom	Germany
Newsgroups: comp.dcom.lans.ethernet
From: chartman@holonet.net (C.A. Hartman)
Subject: Re: Fiber speed
Organization: HoloNet (BBS: 510-704-1058)
Date: Sat, 5 Sep 1992 04:45:39 GMT

seifert@netcom.com (Rich Seifert) writes:

>In article <1992Aug18.181507.14439@picker.com>, SYSNET@engvax.picker.com (Leonard A. Visconti) writes:
>> Does anyone know the speed of a signal through fiber? For example, through
>> thick wire ethernet cable the propagation speed is about 77% of the 
>> speed of light. We are using 62.5/125 multimode fiber at 850 nm. I've 
>> heard (and read) things that lead me to believe this speed might be as 
>> low as 66% of light speed. Thanks in advance....
>>
>That's approximately correct. Contrary to popular belief, fiber is
>SLOWER than most wire. (It is capable of handling higher data rates,
>of course.)
> 

  A simplified yet practical guesstimate of the speed can be found if you can

 obtain the index of refraction, n, (or relative permittivity, er, as n is

 related to er by:  n=1/((er)^.5)) of the material used in your fiber cable

 core (e.g. glass, plastic, silica glass) ... Since v=c/n, speed in the medium

 (the fiber) is simply found by dividing the speed of light by n ... so in

 order to get a percentage you would just take the inverse of n and multiply

 by 100. For example, n should be around 1.45 ... 1/1.45 * 100 = 69.97%.

        ----------------------------------------------------------------
            Chad A. Hartman           cahartm@mbnoa2.mnet.uswest.com
            Electrical Engineer                   {"Hart"}
            US West Communications
      
            "Optimism lives in the hearts of those who will succeed."
Newsgroups: comp.dcom.lans.ethernet
From: joet@dcatlas.dot.gov (Joe Trott)
Subject: Re: Help! QEMM & Ethernet conflict
Organization: U.S Dept. of Transportation
Distribution: usa
Date: Thu, 10 Sep 1992 19:25:33 GMT

kra@cunixa.cc.columbia.edu (Kenneth R Aron) writes:


>	I am a relative novice at nets, currently involved in a
>pilot program for an Ethernet network here at Columbia
>University.  I am running and ALR 25386DX w/DOS 5.0 & QEMM.  If
>QEMM is resident, the Ethernet software will lock up.  Only if I
>bypass QEMM can I use the net. The installer told me to have QEMM
>exclude D00-E00, but that didn't do the trick.  If anyone has a clue
>how to fix this, drop me a line.  If you need more info (ie,
>program names, etc) e-mail me as well.  Thanks.

You need to exclude the RAM address range used by your ethernet card.
Typically, it is D000-E000 (_not_ D00-E00), but it may not be.  Manifest,
which comes with QEMM, should be able to tell you where your card lives.
Assuming your network is Novell (you're using IPX), you can also type
IPX /I  to get IPX to give you I)nformation about how it is configured
without actually loading.  This will tell you what address range to
exclude.

-JTT

From: pat@hprnd.rose.hp.com (Pat Thaler)
Date: Sat, 12 Sep 1992 00:29:32 GMT
Subject: Re: Max Repeaters/multiport repeater wiring questions
Organization: HP Roseville Networks Division
From: seifert@netcom.com (Rich Seifert)
Subject: Re: 802.3 Non-Compliance (?)
Date: Sun, 06 Sep 92 21:00:57 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 

> >In any case, current releases of NetWare (2.2, 3.11, etc.) fully
> >support 802.2.
> > 
> 
> Curious.  Wasn't aware of 802.2 support.  Does that also mean that instead
> of using the Ethernet TYPE field, Novell instead uses it as a true 802.3
> LENGTH field?  It would seem that 802.2 conformance would imply the latter,
> but I was under the impression that Novell implemented the former.
> -- 

Yes, NetWare 3.11 and 2.2 both support stations using Ethernet-II
(802.3 without 802.2), True 802.3 (with 802.2) and 802.3 with 802.2 and
SNAP{ encapsulation. The option is selected in a driver configuration 
file.

-- 
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: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
Subject: Re: Bridge/switch/router for multicast addresses?
Keywords: multicast
Organization: Silicon Graphics, Inc.  Mountain View, CA
Date: Fri, 11 Sep 1992 17:39:10 GMT

In article <1992Sep11.021850.5029@monu6.cc.monash.edu.au>, shall@fawlty1.eng.monash.edu.au (Dr SC Hall) writes:
> 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?  


If you use UDP/IP, then at least some router vendors have been promising
multicast routing support "with OSPF" for more than 2 years.  THey
may be shipping by now.

You can always use mrouted tunnelling if your routers don't do IGMP.



Vernon Schryver,  vjs@sgi.com
Organisation: European Space Operation Centre (E.S.O.C)
Date: Thursday, 10 Sep 1992 09:35:50 CET
From: <RHUNTER@ESOC.BITNET>
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: cascading multiport repeaters

It says in the DEC Networking Guide:

YOU CANNOT CONNECT A DEC REPEATER TO A DELNI.

For the sake of reliability I would stick to individual transceivers
if you already have them.
Cabletron are 802.3.



`
qquit
qquit
qquit
qquit
From: oberman@ptavv.llnl.gov
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: what is SQE  (DUMB QUESTION!) :  No such thing...
Date: 7 Sep 92 22:38:48 GMT

In article <1992Sep7.054925.16210@nuscc.nus.sg>, ccewch@nuscc.nus.sg (Wong Chee Heng) writes:
> lstowell@pyrnova.mis.pyramid.com (Lon Stowell) writes:
> 
> :    Its cheaper to build a single model and include a jumper/switch
> :    to disable SQE for those interfaces still unable to tolerate it.
> :    Otherwise you'd have to build two separate models.  And for the
> :    installer, you can always try just flipping the switch if it
> :    doesn't work.  (some folks don't honestly know whether their
> :    particular adapter is V1, V2, V1.5, or real 802.3...and neither
> :    do a lot of datasheets....)   
> : 
> Do you mean that all the MAUs today can be used for all these standards?
> What about the AUI cables?

In general, Ethernet V2 and 802.3 equipment is compatible. A significant
exception is repeaters. Repeaters generally MUST be used with the same type of
MAU (802.3 with 802.3 and Ethernet V2 with Ethernet V2). This has to do with
correctly recovering from error conditions and segmentation. If you don't mind
manual resets on occasion, even this limitation can usually be ignored. (I
strongly suggest that you don't, though!)

While AUI cables are different between 802 and V2, it is not on signal pins and
they will interoperate. I suggest using 802.3 cables because of the improved
ground configuration.

If you have Ethernet V1 equipment I suggest throwing it out. It needs Ethernet
V1 MAUs, which are hard to come by, and generally will keep confusing folks for
years. Since V2 came out before Ethernet got too popular it is unlikely that
you will find much V1 equipment.

R. Kevin Oberman			Lawrence Livermore National Laboratory
Internet: koberman@llnl.gov		(510) 422-6955

Disclaimer: Don't take this too seriously. I just like to improve my typing
and probably don't really know anything useful about anything.
Newsgroups: comp.dcom.lans.ethernet
From: milton@vivian.enet.dec.com (Tony Milton)
Subject: Re: cascading multiport repeaters
Reply-To: milton@vivian.enet.dec.com
Organization: Digital Equipment Corporation
Date: Thu, 10 Sep 1992 10:00:04 GMT


In article <92254.094504RHUNTER@ESOC.BITNET>, <RHUNTER@ESOC.BITNET> writes:

>Sorry about last posting... it was the IBM line editors fault... honest.
>
>YOU CANNOT CONNECT A DEC REPEATER TO A DELNI.....
>
>It says so in the DEC Networking Guide.
>I beleive this is due to SQE being seen as a segmentation signal
>by the repeaters.
>
>Ray

You can get round this problem (if you really want to) by putting the DELNI 
in global mode and put a loopback connector in the global port - as long as 
no other device that requires on the DELNI requires SQE. In any case my 
reading of the proposed configuration is cascaded DELNIs attached to a 
thickwire - this is a unsupportable configuration and will cause problems 
(e.g. remote failures to defer). My advice would be don't cascade as this 
implies a powered single point of failure.
--
 +------------------------------------+--------------------------------+
 | Tony Milton                        | milton@vivian.enet.dec.com     |
 | Digital Equipment Corporation      | tony.milton@hhl.mts.dec.com    |
 | Digital Services, London, England. |                                |
 +------------------------------------+--------------------------------+

Newsgroups: comp.dcom.lans.ethernet,comp.dcom.lans.misc,comp.protocols.iso
From: martin@weigele.de (Martin Weigele)
Subject: Multi-Protocol Routers wanted to connect LANS into a WAN
Organization: M. Weigele
Date: Tue, 8 Sep 1992 16:48:35 GMT

I am looking for products to interconnect Ethernet 802.3 LANs which run both  
tcp-ip and osi-protocols, and act as routers. Preferably the LANs should be  
connected by ISDN-dialup lines.

Any hints much appreciated.
-- 
Martin Weigele, Kapellenweg 32, D-W-5300 Bonn 2
phone +49 228 333252 home, +49 228 9866385 office
email: martin@weigele.de
Organization: Penn State University
Date: Wed, 9 Sep 1992 10:32:49 EDT
From: <JDB6@psuvm.psu.edu>
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 10Base-T over STP type 1

We use a lot of the IBM wiring system (Type 1, 2, 6, etc) here at Penn State.
We put out a bid for 10baseT equipment and specified that the manufacturers
had to GUARANTEE that their equipment would work to 100m on 150ohm STP.

 David Systems (Concentrators and cards)
 Cabletron Systems (Concentrators, cards and adapters)
 Asante (cards)

all said (and subsequently proved) that their equipment didn't care what
impedance cable was attached.
We have had good success with hundreds of connections from the above
manufacturers on both STP and UTP.

This is not a paid announcement. All above equipment has its shortcomings.

John Balogh, PSU Office of Telecom, JDB@ECL.PSU.EDU, %inc disclaim.std
Newsgroups: comp.dcom.lans.ethernet
From: shava@hermes.oit.unc.edu (Shava Nerad Averett)
Subject: Re: 802.3 Non-Compliance (summary and lesson)
Organization: University of North Carolina, Chapel Hill
Date: Tue, 8 Sep 1992 22:22:37 GMT

In article <JKT.92Sep3134856@seneca.SED.Provo.Novell.COM> jkt@SED.Provo.Novell.COM (Jack Thomasson) writes:
>odi-based drivers (v3.11+ and workstation) can be configured for
>ethernet_802.3 (draft standard mentioned above, also know as "raw"),
>ethernet_ii, ethernet_802.2 (fully compliant and a good choice, hint,
>hint), and ethernet_snap (ethernet_802.2 + snap extension).

ethernet_802.2 is fine *IFF* you use only IPX via ODI on your workstation,
or if you are using IPX and IP using LAN WorkPlace.  If for any reason
you want to use packet drivers on top of ODI (for instance, to save 
memory...), the ODIPKT packet driver interface will not support 802.2.

At least, this is our experience.  We are still going to ethernet_ii,
campuswide.  We doubt TCP/IP, which runs ethernet_ii, is going to disappear
very soon, so it seems like a fairly safe bet.

Note that even the NetWare documentation for 3.x, in the sysadmin guide,
under LOAD, mentions that you should only use the 802.3 default frame
type on a network that is only carrying NetWare.  But no mention of this
caveat is made in the installation guide...
-- 
Shava Nerad Averett				shava_averett@unc.edu
/*  all materials (c)1992, Shava Nerad Averett, and have nothing significant
    to do with the University of North Carolina, a mostly owned subsidiary 
    of the NC Legislature, a mostly owned subsidiary of the DOT.      */
Newsgroups: comp.dcom.lans.ethernet
From: skimmel@iiic.ethz.ch (Stefan Martin Kimmel)
Subject: NetBios for SINIX (UNIX)
Organization: Dept. Informatik, Swiss Federal Institute of Technology (ETH), Zurich, CH
Date: Mon, 14 Sep 1992 09:25:55 GMT

We are trying to connect PC Clients to a SINIX hosted server.

To be able to run NetBios over TCP/IP and Ethernet we are looking
for a NetBios implementation for the Siemens Unix derivate SINIX V. 5.2.1
running on a MX500 Siemens machine.

Does anybody know of such a product (commercial or free)? Is there a
portable UNIX NetBios Interface available, that we could port?

Does anyone have experience with NetBios on UNIX (SINIX) servers who can
tell us where to get more information on this subject.

Please respond via email to skimmel@inf.ethz.ch

Thank you very much     

                          Stefan Kimmel
From: ss@panix.com (Steve Steinberg)
Newsgroups: comp.dcom.lans.ethernet
Subject: Bridging 2 lans
Date: 10 Sep 92 17:22:30 GMT
Organization: PANIX Public Access Unix, NYC

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?  

	2) Can anyone recommend a good remote bridge?  

	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.  

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. 

Thanks in advance,
 
 
 
 
 

-- 
=====================================================================
=== Steve Steinberg   ==  ss@panix.com  == {cmcl2,apple}!panix!ss ===

              (The space below intentionally left blank)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: cascading multiport repeaters
From: don@rata.vuw.ac.nz (Don Stokes)
Date: Fri, 11 Sep 1992 02:12:49 GMT
Organization: NewZnet Support Group, VUW, New Zealand.

<RHUNTER@ESOC.BITNET> writes:
> YOU CANNOT CONNECT A DEC REPEATER TO A DELNI.....

(a) Please don't shout.

(b) You can.  The constraint is that the transceiver that the DELNI's 
global port is attached to must have the SQE test disabled (as does
a single transceiver attached to a repeater).  The effect of this is
that all devices on the DELNI (or other manufacturer's multiport MAU --
this doesn't just apply to DELNIs) "think" they're attached to an MAU 
that has the SQE test disabled.  Some things care, some don't.  If you
have a number of repeaters, consider sticking them all into one DELNI
with the SQE test disabled.

With regard to the _original_ question, ie can you cascade DELNIs, the 
answer is no.  The only exception is when the "top" DELNI is in local 
mode, which isn't the configuration being asked about.  Buy more 
transceivers.

--
Don Stokes, ZL2TNM (DS555)                      don@zl2tnm.gen.nz (home)
Network Manager, Computing Services Centre          don@vuw.ac.nz (work)
Victoria University of Wellington, New Zealand.           +64-4-495-5052
Newsgroups: comp.dcom.lans.ethernet