HDTenEightyP/NetNews huggingface dataset:
From: dacobb@uts.uni-c.dk (Bent Bagger)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Secure Ethernet? --> ScaNet?
Date: 6 Nov 92 13:08:21 GMT
Organization: UNI-C, Danish Computing Centre for Research and Education


ScaNet is a LAN/WAN that makes it possible to connect PCs and
most hosts and terminals into a network. ScaNet was originally
Ethernet based but is now extended to FDDI and Token-Ring as
well. The stations may communicate using the TCP/IP, DEC/LAT or
OSI (TP4) protocols. PCs may also use IPX/SPX, NetBIOS, NDIS,
ODI or PDS.

The network interface board in both PCs, host servers, and
terminal servers has an onboard CPU that runs the chosen
protocol(s). On cold restart, a small program stored in PROM
sends out a boot request using either RARP/BOOTP/TFTP or a
ScaNet boot protocol. The boot request is answered by a BOOTP
server or by a ScaNet Network Control Station (NCC) <StarTrek
??? it is not on Danish TV> which downloads a parameter block
to the station. This parameter block contains the specific
parameters for the station such as protocol module names,
transmission characteristics and security parameters.

The PROM solution not only makes it easy to update the protocol
software, but also makes it possible to build up a fairly
secure system using concepts such as password, security level
and access rights.

The password protects a station from access by other,
unauthorized stations.

The security level makes it possible to divide a network into a
hierarchy of groups such that a station may only be accessed by
another station with the same or a higher security level.

Access rights is an explicit list of which stations may connect
to a given port of a station.

Security parameters can only be changed by the NCC operator
(the network administrator), not by the user.

Finally a ScaNet may be made into a completely secure system by
adding a Data Encryption Option to the network. Briefly you add
a DES chip to the boards (they have sockets for this), use
special versions of the protocol software, add a Key
Distribution Center to your network, and voila - you have a
very secure system which uses the RSA algorithm for key
distribution and DES encryption for the data transfer.

>Thanks

-- 
Bent Bagger                             dacobb@uts.uni-c.dk                   
Product Management                      Voice: +45 44530100 
Cray Networks A/S - Denmark     	Fax:   +45 44531415
Newsgroups: comp.dcom.lans.ethernet
From: orion@phobos.unm.edu (Tim Guerrette)
Subject: Re: Win for Workgroups
Date: Wed, 11 Nov 92 02:59:19 GMT
Organization: University of New Mexico, Albuquerque

In article <1992Nov10.182135.14525@polaris.utu.fi>, hmikola@polaris.utu.fi (Hannu Tapio Mikola) writes:
> Hello all beta testers and early birds! Any comments on Windows for Work-
> groups? Is it better or equal to Lantastic for Windows. Does it work with
> 16-bit Lantastic cards? TCP/IP-connections? Any support for DOS-programs?
> 
> Hannu Mikola  hmikola.utu.fi 
> 
> 

The question is between WFW and LANtastic for Windows. There is no comparison. LANtastic is just a network with the network mail... by WFW is Windows 3.1, Lan Manager 2, MicroSoft Mail, Scheduler+ (really cool util).

I'm not sure about the TCP/IP, but the LANtastic cards just need a switch flipped to run with Novell (or Lan Mgr).

In addition to that, you have MicroSoft support (??) but the price is only $68.00 each terminal if you already have windows and network cards.

Thanks,

-- Tim
     
Newsgroups: comp.dcom.lans.ethernet
From: seifert@netcom.com (Rich Seifert)
Subject: Re: Is 10Base-F Part of IEEE 802.3 Std ?
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Date: Thu, 12 Nov 1992 20:53:30 GMT

In article <1992Nov11.173116.91@taney.uscghq.uscg.mil>, roseberry@taney.uscghq.uscg.mil writes:
> 
> 	Is 10Base-F, where the "F" stands for "fiber", actually part
> 	of the IEEE 802.3 standard ?
> 
> 	Just wondering .....
> 
> 	- Bert Roseberry
>           US Coast Guard
> 	  roseberry@taney.uscghq.uscg.mil
> 

Not yet. It was ballotted recently, and will probably get TCCC (IEEE
Technical Committee) approval sometime in the next few months.
-- 
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: mwr@eng.tridom.com (Mark Reardon)
Subject: Re: Ethernet chips
Keywords: ehternet 802.3 design
Reply-To: mwr@eng.tridom.com (Mark Reardon)
Organization: AT&T Tridom; Marietta, Georgia
Date: Sat, 7 Nov 1992 20:17:44 GMT

In article <1992Nov2.060715.26710@cbnewsj.cb.att.com>, etorrem@cbnewsj.cb.att.com (engelbert.jgm.torremans) writes:
|> Does anyone know if there are single chip solutions (or small daugther
|> boards) for integrating an ethernet (cheapnet) interface in a 68k based
|> PCB design.
|> 
|> Any ideas, suggestions, hints are welcome.
|> 
|> Willem Romijn
|> AT&T Network Systems Nederland B.V.

I have aleady replied to the poster but wanted to add my 2 cents on
controllers.  We have recently used the Fujitsu NICE cheap and found
it to be quite easy to work with.  We interfaced it to a 68302 based
system and use the '302's DMA to load it and unload it.  It has its 
own private bus for buffer storage and interfaced easily to the '302's
bus.  It has a built in ENDEC so the design was fairly simple.  It
has a sister chip, The EtherCoupler, that has 10baseT capabilities
and is software compatible.

From the software side this part is easy to use.  An advantage for
those of us interested in examining packets for filtering, the NICE
allows the processor to skip the rest of the packet being currrently 
read so that the data doesn't cross the processors bus.

When making our choice we looked at over a dozen controllers on the
market and considered many issues including the following:

	cost including interfacing "glue',
	power (we are limited),
	ease of programming,
	reputation for reliability,
	board space,
	support,
	load on processor for our application.

Of course we assigned our own weighting to these issues and the pick
is always a compromise.

-- 
Mark

---------------------------------------------------------------------
| Mark Reardon           |  AT&T Tridom                             |
| mwr@eng.tridom.com     |  840 Franklin Court                      |
|                        |  Marietta, GA 30067                      |
---------------------------------------------------------------------
From: ctoomey@ccvax.ucd.ie
Newsgroups: comp.dcom.lans.ethernet
Subject: Apologies to 'vjs' (was Re: FAQ: Or would be, if there was one)
Date: 10 Nov 92 13:27:07 GMT
Organization: University College Dublin

Ooops, actually it wasn't Vernon who told me that I could use less than the
0.5M internode minimum under 10Base2, in my special situation, but somebody
completley different....

Apologies Vernon; I'll try to stop commenting by proxy for you in future :-D

Off to get my eyes tested, mind replaced..

		- Colm Toomey -
		B.Sc., Graduate Student in Comp. Sci.
		('Down Undergrad., Down Boy...)
Newsgroups: comp.dcom.lans.ethernet
From: orchard@eceserv0.ece.wisc.edu (Bruce Orchard)
Subject: Thin-wire - twisted-pair converter
Organization: Univ. of Wisconsin-Madison; Electrical & Computer Engineering
Date: 9 Nov 92 14:37:04 CST

We are about to move into an addition to our building.  Most of
the old part of the building is wired with thin-wire Ethernet
but the new part will be wired with twisted-pair Ethernet.
Some of the rooms in the new part will have several workstations
moved from the old part.  The workstations are now wired with
thin-wire Ethernet.  Most of the workstations have an AUI 
interface, some have a thin-wire interface, and at most a few have
twisted-pair interfaces.

Here are the options I have thought of:

1.  Put twisted-pair transceivers on all the workstations and
    use a twisted pair hub in the room with the workstations.
    Unfortunately, a few of the workstations have only the
    thin-wire interface.

2.  Use a twisted-pair - thin-wire converter such as is made by
    Cabletron and Milan.  These are not true repeaters and
    have a limit of 10 connections on the thin-wire side.
    I do not expect the limit of 10 to be a problem.
    The thin-wire segment does not count as an Ethernet
    segment.

3.  Use a true repeater with interfaces for twisted pair and
    thin-wire such as is made by Allied Telesis.  This makes
    the thin-wire segment count as an Ethernet segment, but I 
    do not expect to exceed the 5 segment limit.  The thin-wire
    segment can have 30 connections, the same as any other 
    thin-wire segment.

I am leaning to either option 2 or option 3.  The repeater
for option 3 costs about $100-$200 more than the converters
in option 2 (I don't have firm quotes).  

Are there advantages or disadvantages of options 2 or 3
I have not thought of?

How well to the converters (option 2) work?

Bruce Orchard (orchard@ece.wisc.edu)
From: hdavies@rx.xerox.com (Hugh J.E. Davies)
Newsgroups: comp.dcom.lans.ethernet
Subject: Connecting a Sun to thin ethernet?
Date: 9 Nov 92 13:52:38 GMT
Article-I.D.: spectrum.1992Nov9.135238.27451
Reply-To: hdavies@rx.xerox.com
Organization: Rank Xerox Ltd.


---
How can I connect a Sun workstation to a thin ethernet? I need to allow my Sun to talk to my PC, with mimimal expenditure. I was going to use a 3COM 3C501 card in the PC, configured for thin ethernet. I have scrounged a transceiver for the Sun, and I was just going unsolder the vampire tap and either solder in a BNC socket, or just solder the cable directly into the transceiver. Would this work?



Regards,

Hugh.
------------------------------------------------------------------
I don't speak for Xerox, nor they for me.

Rank Xerox European Systems Centre, Welwyn Garden City, Herts., UK.
Mail to; Huge.wgc1@rx.xerox.com, whatever it says in the header.
From: heisen@convex.rz.uni-duesseldorf.de (Henner Eisen)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: MAC address manufacturer ID list?
Date: 9 Nov 1992 16:00:02 +0100
Organization: Heinrich-Heine-Universitaet Duesseldorf
Distribution: world
NNTP-Posting-Host: convex.rz.uni-duesseldorf.de

In <1992Nov05.181913.9705@src4src.linet.org> redsonja@src4src.linet.org (Red Sonja) writes:


>Please excuse me if this is a FAQ. I am looking for a list, if one
>exists, of the first three fields of an ethernet MAC address and the
>corresponding manufacturers. If there is one floating around the net,
   [...]

rfc1340, which can be ftp'ed from many servers, contains a list of
several ethernet vendor address components. I don't think that it is
complete but all major manufacturers seem to be included.

--
Henner Eisen
From: dacobb@uts.uni-c.dk (Bent Bagger)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Secure Ethernet? --> ScaNet?
Date: 9 Nov 92 12:20:59 GMT
Organization: UNI-C, Danish Computing Centre for Research and Education

In <1992Nov9.041726.3234@grebyn.com> rich@grebyn.com (Richard Lawrence) asks:

>>protocol(s). On cold restart, a small program stored in PROM
>>sends out a boot request using either RARP/BOOTP/TFTP or a
>>ScaNet boot protocol. The boot request is answered by a BOOTP
> ^^^^^^^^^^^^^^^^^^^^

>Do you know if this is directed or broadcast? ie, will it cross routers
>without bootp helper?
> 
The ScaNet boot request is sent out as a 802.3 Multicast (using the 
ScaNet addressing space), i.e. it *will* be routed unless specifically
filtered out by the routers.

-- 
Bent Bagger                             dacobb@uts.uni-c.dk                   
Product Management                      Voice: +45 44530100 
Cray Networks A/S - Denmark     	Fax:   +45 44531415
From: roseberry@taney.uscghq.uscg.mil
Newsgroups: comp.dcom.lans.ethernet
Subject: Is 10Base-F Part of IEEE 802.3 Std ?
Date: 11 Nov 92 17:31:16 EST
Organization: United States Coast Guard


	Is 10Base-F, where the "F" stands for "fiber", actually part
	of the IEEE 802.3 standard ?

	Just wondering .....

	- Bert Roseberry
          US Coast Guard
	  roseberry@taney.uscghq.uscg.mil

Newsgroups: comp.dcom.lans.ethernet
From: tbooth@netcom.com (Todd Booth)
Subject: Re: Synoptics/WellFleet question...
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Date: Thu, 5 Nov 1992 05:41:28 GMT

dhuber@autelca.ascom.ch (Daniel Huber) writes:

>The same customer (see article "Secure Ethernet --> Scanet?), want's
>to switch from his LattisNet HUB's (well, just for two of them) to 
>WellFleet Routers... 

>My question is: Why does he choose wellfleet, and not cisco modules
>for the hub?

It is difficult for me or anyone else to know why *he* choose Wellfleet
although I can think of many reasons why he *may* have choosen
Wellfleet.

>He said something about a 1GB backplane in the wellfleet router...
>Could that be the reason?

Yes, that *could* be the reason but...

You (and others) would be better off not comparing backplance speeds,
even though we do have 1Gb/sec through our backbone systems.

You would be better off comparing the aggregate throughput since it
is possible for a company to have a 1Gb/sec backplace and have less
than 100K pps throughput.  Our 1Gb/sec has throughput of 480K pps.

You would be even better off comparing systems for the environment
for which they will be used.  The reason for this is that some
vendors may have a 60-70% performance hit when using filters or
non-ip protocols.  Note that this may not matter depending upon
your requirements.

--todd booth / Wellfleet Systems Engineer
Newsgroups: comp.dcom.lans.ethernet
From: tilley@ccu.umanitoba.ca (Richard Tilley)
Subject: Re: Please explain....
Organization: University of Manitoba, Winnipeg, Canada
Date: Sun, 8 Nov 1992 13:11:33 GMT

In <1992Nov2.011806.13613@netcom.com> seifert@netcom.com (Rich Seifert) writes:

>[...] This is not
>surprising, since (1)It is not a bridge, and (2) It isn't intended to
>be a substitute or replacement for a bridge. The best way to think of this
>beast is as a "turbo-charged" hub. In a SynOptics concentrator, for example,
>hundreds of devices can attach to the hub, but they all share the same
>10 Mb/s Ethernet. In a Kalpana, every device that connects to it has its
>own, private 10 Mb/s Ethernet. 

I must be missing something.
From what I have gleaned from this group, a Kalpana is a multiport bridge.
Does a bridge not also allow 10 MB/s on each port?
Can only one device be attached to a Kalpana port?

I realise that a Kalpana has more than 2 ports.

Just wondering

... Richard
-- 
This space is not blank!
From: jrg@otter.hpl.hp.com (John Grinham)
Date: Fri, 13 Nov 1992 12:25:34 GMT
Subject: Re: Re: 100mbit Ethernet
Organization: Hewlett-Packard Laboratories, Bristol, UK.
Newsgroups: comp.dcom.lans.ethernet

>  The Group 2 proposal uses the same wiring spec as 10BaseT (how I don't know).

Here is a bit more info on the HP/AT&T announcement at the 802.3 meeting. 
Apologies for the marketing speak, but at least it does have some
technical content.... 

Hewlett-Packard and AT&T Microelectronics , which
last month announced what they believe is the first technology
to transmit data at 100 megabits per second,
have now submitted a proposal to the IEEE 802.3 networking committee
for creating an industry standard.

Jointly developed by the two companies, the technology includes
two new advances: Quartet Signaling transmission (which expands
the capacity of voice-grade cable by transmitting simultaneously
on all four wire pairs instead of only one) and Demand Priority
(which manages and allocates access to the network centrally,
at a hub, rather than from individual workstations).


Best regards,
John Grinham
Network Technology Dept,
HP Labs Bristol.

-----------------------------------------------------------------------------
John Grinham.  HP Labs ISC, Filton Road, Stoke Gifford, Bristol BS12 6QZ, UK.
Tel: (0)272 799910	Fax: (0)272 790554 	Telex: 449206
jrg@hplb.hpl.hp.com     jrg@hplb.hp.co.uk 	jrg@hplb.uucp
-----------------------------------------------------------------------------
From: tbooth@netcom.com (Todd Booth)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Synoptics/WellFleet question...
Date: 5 Nov 92 15:57:45 GMT
Article-I.D.: netcom.1992Nov5.155745.3682
Organization: Netcom - Online Communication Services  (408 241-9760 guest)

rich@grebyn.com (Richard Lawrence) writes:

>In article <1992Nov3.201916.20869@autelca.ascom.ch> dhuber@autelca.ascom.ch (Daniel Huber) writes:
>>

>Both Wellfleet and Cisco's ...
>... Both manufacturers make fine units, but the general
>consensus often seems to be go with what you already have, so if he has
>Cisco's now then he should look at the AGS units (or whatever).

Assuming that both manufacturers products have the same features,
then users should go with what they already have.

However, Cisco and Wellfleet routers are very different in many 
significant ways.

Additionally, there are some things that can *only* be done by Cisco
and some things that can *only* be done by Wellfleet.

>You should mention that the router will become a very obvious single
>point of failure for the entire network. If he really wishes a high
>speed backbone with redundant links, then he should look into FDDI.

1) Wellfleet offers a new router with no single point of failure to
be delivered in Feb.

2) There is a misconception in the industry that a collapsed 
backbone design (from any vendor) is not well suited for
mission criticle network design (I *hate* the term mission
criticle).  With Wellfleet's current products, as well as Cisco,
..., mission criticle networks can be designed by using a
redundant collapsed backone which is also tied to each segment.

Note also that using a *classic* backbone will still have a single
point of failure for each department lan hung off the backbone
anyway.  To make a *classic* backbone redundant requires using
two brouters to connect each subnet to the backbone.

3) You can also achieve limited redundancy by having more than
one interface on your collapsed backbone tie into the segment.
This is protocol dependent and does not work in all cases.
However, if you have 15 enet segments, then you would require
30 enet interfaces on your router (WF supports up to 52 at near
wire speeds).

4) Even if your collapsed backbone does have an interface
failure, some vendors (at least Wellfleet) will allow you to
replace the interface module while the system is running.  You
can then bring up the interface without rebooting the system.

--todd booth / Wellfleet Systems Engineer
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: 10BaseT trans failure question
From: Larry F Armbruster <U22C5@wvnvm.wvnet.edu>
Date: Tue, 10 Nov 1992 16:44:10 EST

I'm not sure if it is the same thing but we recently had the ethernet card
AND the ioplanar board fried in a RISC 6000.  The IBM CE theorized that it
was cause by a static charge across the thin wire cable.
Larry
Newsgroups: comp.dcom.lans.ethernet
From: mwicks@eleceng.uct.ac.za (Matthew Wicks)
Subject: 8390 loopback mode
Date: Wed, 11 Nov 92 12:38:14 GMT
Organization: University of Cape Town
Keywords: 8390

In the example Loopback routine given in the May 1988 DP8390 Datasheet 
Addendum, the comment is made that the 8390 NIC must be reset after each 
loopback operation to reset its FIFO pointers. This is not mentioned in the 
data sheet. Is it necessary to do this or is there a way around this. I 
presume that by reset they mean a hardware reset on the NIC's reset pin.
Please email any replies thanks.
Matthew Wicks
University of Cape Town
Newsgroups: comp.dcom.lans.ethernet
From: JURGENS_PJU@jt.dk (Peter Jrgensen)
Subject: Re: Secure Ethernet? --> ScaNet?
Organization: Jydsk TELEFON
Date: Tue, 10 Nov 1992 21:28:26 GMT
X-News-Reader: VMS NEWS 1.24

In <1992Nov9.122059.13510@uts.uni-c.dk> dacobb@uts.uni-c.dk writes:

> In <1992Nov9.041726.3234@grebyn.com> rich@grebyn.com (Richard Lawrence) asks:
> 
> >>protocol(s). On cold restart, a small program stored in PROM
> >>sends out a boot request using either RARP/BOOTP/TFTP or a
> >>ScaNet boot protocol. The boot request is answered by a BOOTP
> > ^^^^^^^^^^^^^^^^^^^^
> 
> >Do you know if this is directed or broadcast? ie, will it cross routers
> >without bootp helper?
> > 
> The ScaNet boot request is sent out as a 802.3 Multicast (using the 
> ScaNet addressing space), i.e. it *will* be routed unless specifically
> filtered out by the routers.
> 
> -- 
> Bent Bagger                             dacobb@uts.uni-c.dk                   
> Product Management                      Voice: +45 44530100 
> Cray Networks A/S - Denmark     	Fax:   +45 44531415

Hi,

Just an informative message.

This isn't directly in connection with this discussion,
but I would just point out that Cray Networks A/S - Denmark is
the producer of ScaNet, in case people following this discussion
didn't guess it from Mr. Bent Baggers answers.

Originally the company was called Dataco, later it was bought by a
company in UK (Dowty Network Systems (I think)) and was recently 
bought by Cray Networks (UK).


Peter.
------------------------------------------------------------------
Peter Jurgensen
Jutland Telephone Company
A part of TeleDanmark

I am not an official spokesperson, so forget what I just wrote.
-----------------------------------------------------------------
From: aem@symbiosis.ahp.com (a.e.mossberg)
Newsgroups: comp.dcom.lans.ethernet
Subject: Re: Converter from RJ45 to BNC (make that AUI!)
Date: 5 Nov 1992 08:24:09 -0500
Organization: Symbiosis Corporation, Miami, Florida  (305) 597-4000
Distribution: na
Reply-To: aem@symbiosis.ahp.com
NNTP-Posting-Host: symbi1.symbiosis.ahp.com


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


aem
-- 
andrew mossberg           systems specialist           symbiosis corporation
(305) 597-4110            fax (305) 597-4002           miami, florida 33166-6202
aem@symbiosis.ahp.com     uunet!symbi1!aem             SPAN: UMIGW::AEM
Newsgroups: comp.dcom.lans.ethernet
From: mrunkel@titan.ucc.umass.edu (Marc A. Runkel)
Subject: Re: Converter from RJ45 to BNC (make that AUI!)
Organization: University of Massachusetts, Amherst
Distribution: na
Date: Thu, 5 Nov 1992 13:21:21 GMT

bj@unislc.UUCP (Bruce Jones,B2E10,7046) writes:
>
>Does somebody have a phone # for Black Box (thats a company right?)
>
>Thanks,
>Bruce
Yes, it's (412) 746-5530 for orders, (412) 746-5565 for tech support.

-- 
Marc A. Runkel                              mrunkel@titan.ucc.umass.edu
Network Support Asst.                       Of course, this is just my
Registrar's Office                          tiny, insignificant, humble
University of Massachussets, Amherst        opinion.  If you don't like it....
Newsgroups: comp.dcom.lans.ethernet
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Are the 3C501 cards any good?
Date: Wed, 11 Nov 1992 22:01:48 GMT
Organization: U of Toronto Zoology

In article <1992Nov11.022926.7193@grebyn.com> rich@grebyn.com (Richard Lawrence) writes:
>1) Nobody gets 10mbit/second anyway, even if they have cards that can
>really do it. One of the realities of ethernet.

One of the myths of Ethernet, actually...  You can get extremely close to
that if you have a modern machine, good software, a good Ethernet interface,
and no other traffic.  Van Jacobson's TCP/IP code can drive an Ethernet so
close to flat-out that it's ultimately limited by the other end not being
able to get a word in edgewise for acknowledgements.
-- 
MS-DOS is the OS/360 of the 1980s.      | Henry Spencer @ U of Toronto Zoology
              -Hal W. Hardenbergh (1985)|  henry@zoo.toronto.edu  utzoo!henry