[HECnet] Attaching to hecnet

H Vlems hvlems at zonnet.nl
Sun Jul 4 21:28:04 PDT 2010


Apparently it is already on the system. But unixes have a tremendous
capacity to hide resources for the simple owner/user ....
Steve Davidson knows the answer, he's done the trick on a BSD system.

-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] Namens
Johnny Billquist
Verzonden: zondag, juli 2010 22:22
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

I'll happily answer any questions, and so on. pcap is a library that is 
needed by the bridge program, but exactly how you get that onto your 
machine is beyond me.

	Johnny

H Vlems wrote:
Johnny, as soon as I've figured out how this works I'll write a manual for
you :-)
But you've got to guide me through the entire painful process first.
I had to shut down my Fedora 9 workstation because of the heat.
The error messages I got while attempting to compile the source were all
related to 'pcap'. Any suggestions?

Hans

PS
Later in the evening when the system is up again I'll post more
information.

-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] Namens
Johnny Billquist
Verzonden: vrijdag, juli 2010 9:50
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

You don't need "your own" port number. You need a port number. You are 
free to pick any that isn't used by something else on your system.

That said, 4744 works just as fine as anything else, including 4711. As 
Sampsa pointed out, you can use 4711 as well, if you want to. It only 
needs to be unique on your system. What ports I (or anyone else) is 
using, does not affect you more than that you have to have that 
information in your conf-file.

Your own port number is specified on the command line, as mentioned as
well.

Oh, and the reason you haven't seen a manual about the bridge program is 
because I've never written one. :-)
Feel free to contribute... ;-)

	Johnny

H Vlems wrote:
OK, I understand that part (I think) of the bridge program.
I wasn't aware that I'd need my own port number. I'll opt for 4744, if
that
is alright.
Do I need to configure this somewhere (like in the .conf file)?
Hans

PS
My apologies for all these questions but I haven't seen a manual about
the
bridge program....


-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] Namens
Johnny Billquist
Verzonden: donderdag, juli 2010 15:45
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

Hi.

H Vlems wrote:
OK, let's try the bridge option first. Could you give me a sample .conf
file
that I can use?
Hmm. Not one that you can use straight away, no.

However, it should look something like this:
================
[bridge]
local <your ethernet interface name>
update psilo.update.uu.se:4711
[decnet]
local
update
=================

And that's it. What your local ethernet name is, I have no idea.

My external IP address is:

Name:       osmium.homeip.net
Address:   87.209.50.192
That is something I need for my side of the bridge. In addition, I also 
need to know what port number you will be using.

I assume that a NAT entry is needed on my ADSL router, right? Would that
be
for port 4711 (as in eau de cologne ??)
Yes, 4711 is named after the water from Cologne. :-)
(Very oldish hacker folklore that I suspect people nowadays might not 
know...)

And yes, if you have NAT running, you will need to forward traffic 
between your box, at whatever port you are using, and 
psilo.update.uu.se:4711. And this is UDP traffic.

	Johnny

Hans

-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] Namens
Johnny Billquist
Verzonden: woensdag, juni 2010 14:16
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

Hi, Hans.

H Vlems wrote:
OK Johnny, talk to me :-)
This is my plan: I intend to modify two systems to try the connection
to
HECnet.
1) I have a linux system under Fedora 9 that will run the bridge
software
and an Alpha Server 1200 under VMS V8.3 and DECnet phase IV, address
1.1010.

That should work without any strange problems. You'll probably want to 
connect the bridge to me in that case. Let me know when you are ready to

try.

2) a VAXstation 4000 model 90A, running VMS V7.3 and DECnet phase V, in
area
44.
I'd like to try that connection without the linux system.
You need to find someone who can act as the other end in this case. 
Which I suspect meaning someone running phase V and as an area router. I

don't know who might be doing this. Maybe someone who do can speak up.

Anyone know if this would be compatible with DECnet over IP as Multinet 
does it?

Option 2 is my preferred situation since it removes a by and large
unknown
factor from the equation (the linux box).
Sure. We just need to identify someone you can connect to.

So, what do I need to know and to do to make this work?
Someone to connect to...

	Johnny

Hans

-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE]
Namens
Johnny Billquist
Verzonden: maandag, juni 2010 21:03
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

H Vlems wrote:
What I meant with the phase III-IV-V answer is that direct
connectivity
between a phase V and phase III system won't work. But poor man's
routing
will work with a phase IV node in between. Functionality of course is
limited by the phase III host :-)
I wonder if phase III to phase V neccesarily will not work. However,
DEC

never guaranteed that it will work, nor did they ever try it.

But you're absolutely right that very few people will have a phase III
system, RT-11 being the most likely candidate?
Probably. Or if someone is running some old versions of other systems.

I've seen the bridge program, but am not sure how to make the .conf
file
work. Is it possible to use DECnet address 1.1010 to try and make this
work?

Yes. 1.1010 is not used by anyone, so that node number would be ok to 
use to test.
But you also need to talk with me (or someone else) with the bridge 
running, to act as the remote end.

	Johnny

Hans

-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE]
Namens
Johnny Billquist
Verzonden: maandag, juni 2010 11:02
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

Hi.

H Vlems wrote:
DECnet phase IV nodes are backwards compatible with phase III. 
Yes. But the question here was if phase V will interoperate with phase

III. I don't know the answer to that one, but on the other hand, I
don't
think anyone around is running phase III anyway.

There are no restrictions in functionality between phase IV nodes and
phase
V as seen by the unpriviledged user. Area routing may be an issue on
Alpha,
and of course ncl is more of a pain to remember than ncp ;-)
True, as far as that goes.
However, I am not sure that a phase V node can operate as a phase IV 
area router.

Someone else pointed out that although DEC claimed that alphas could
not
be area routers, that information is incorrect, and you can just tell
an
Alpha VMS phase IV node to be an area router, if you want to.

However, DECnet+ is phase V, and all bets are off. :-)

And yes, not only are the NCL commands more difficult to remember 
(atleast for me), the node name management is way more difficult as 
well. Do anyone know how you copy a nodename database from another 
machine with DECnet+?

Two questions:
1-May I use area 44?
Sure.

2-Is there a short guide to set up DECnet over IP to connect to
HECnet?
Not that I know of. Maybe Mark Wickens have something on hecnet.eu?
My page (http://www.update.uu.se/~bqt/hecnet.html) only have
information
about the bridge.

	Johnny

Hans
-----Oorspronkelijk bericht-----
Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE]
Namens
Marc Chametzky
Verzonden: maandag, juni 2010 0:04
Aan: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] Attaching to hecnet

DECnet-Plus isn't
able to connect, or at least reliably connect to all OS's that can
potentially be on HECnet. I forget what all OS's I was having issues
with, I know one was RSTS/E v10.1, but I want to say it also
included
VAX/VMS. Once I *upgraded* my Alpha running OpenVMS to DECnet Phase
IV,
all these issues went away. These were things as simple as SET HOST.
It's probably that DECnet-Plus (Phase V) cannot speak with DECnet
Phase
III (such as on RSTS/E and TOPS-10/20). That's my guess anyway.

Phase V should be able to communicate with VAX/VMS since that's Phase

IV, which is the gold standard of DECnet, IMHO.

--Marc
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