The biggest issue I don't understand here is why.
If you tunnel a serial port, you tunnel a serial port. DDCMP is totally invisible to you.
You will not learn, or need to understand anything about DDCMP for this. A serial port sends bytes. You pass those bytes one. Everyone is happy.
What kind of protocol is implemented, using those bytes, are very invisible and irrelevant to the tunnel, just as it is to a cable.
You might as well tunnel SLIP, or PPP. It will work just the same.
They are all just implementing a network layer on top of a serial connection.
What are you really trying to accomplish?
Johnny
On 2012-01-01 01.57, The Presence wrote:
Bob,
I really am wanting to use DDCMP for learning purposes. I want to build
a decnet phase IV network with DDCMP, however, I want to also have the
ability to pass traffic through to connect to additional nodes that are
net connected.
Kevin
------------------------------------------------------------------------
To: hecnet at Update.UU.SE
Date: Sat, 31 Dec 2011 16:41:02 -0800
Subject: Re: SV: RE: [HECnet] Hecnet and DDCMP
From: bob at jfcl.com
What is it that you actually want to connect? For the most part, a
Multinet link simulates the "user experience" of a DDCMP connection
tunneled over IP. Multinet is a point-to-point DECnet circuit which,
except for the device names, is functionally identical to any DDCMP link.
The only reason I can see for using a real DDCMP serial connection
(either sync or async) would be to connect a machine that didn't support
an Ethernet interface.
Bob
Rob,
If it is passing all bits from the serial port over, it should work. My understanding is that serial was solely DDCMP, at least during the VMS days.
Reviewing the simh archives from 2005 I noticed a reference to ipcom (windows package for connecting a physical rs232 port to a network port, allowing serial login from a remote machine), but this won't work for me, as I need DDCMP, not a console connection, not to mention I'm hoping to physically connect a VMS system in the big picture, not simulations. Perhaps there is some configuration to make this happen, I may test the windows/simh setup just to see.
Mark, the toolset will probably work for your purposes.
http://members.lycos.co.uk/ipcom/
Kevin
Date: Sun, 1 Jan 2012 09:23:33 +0100
Subject: Re: [HECnet] Hecnet and DDCMP
From: robert.jarratt at ntlworld.com
To: hecnet at update.uu.se
Working with a friend, I have written a SIMH emulation of the DMC11 device, so you can do this with SIMH. It tunnels the bytes sent to/from the device over a socket. We have used the SIMH emulation to connect my friend to HECnet over a (simulated) DMC11.
The bit I am not entirely sure about is to what extent this is using DDCMP as I don't have a full understanding of DDCMP.
Regards
Rob
On 31 December 2011 18:46, The Presence <tpresence at hotmail.com> wrote:
Hey guys,
Has anyone worked out a mechanism to connect a node to hecnet using DDCMP? Perhaps some tunneling technology over IP, or virtualized serial?
Kevin
Jarratt, did you make this publicly available on the SIMH list? It
would be great to have a DMC11 device emulated, since I insist on
running RSTS/E v8 (for historical reasons... it was the last real RSTS
before "the pollution"). RSTS/E v8 doesn't have ethernet support, so
the only way I could have DECnet is via a (previously unemulated)
DMC11 interface. Does yours work well?
-Mark
On Sun, Jan 1, 2012 at 3:23 AM, Jarratt RMA <robert.jarratt at ntlworld.com> wrote:
Working with a friend, I have written a SIMH emulation of the DMC11 device,
so you can do this with SIMH. It tunnels the bytes sent to/from the device
over a socket. We have used the SIMH emulation to connect my friend to
HECnet over a (simulated) DMC11.
The bit I am not entirely sure about is to what extent this is using DDCMP
as I don't have a full understanding of DDCMP.
Regards
Rob
On 31 December 2011 18:46, The Presence <tpresence at hotmail.com> wrote:
Hey guys,
Has anyone worked out a mechanism to connect a node to hecnet using DDCMP?
Perhaps some tunneling technology over IP, or virtualized serial?
Kevin
The entire HECnet community now lives in 2012 which, considering the radio silence, must have been an impressive occasion for you all :-)
A Happy and Healthy New Year for all of you.
Hans
Working with a friend, I have written a SIMH emulation of the DMC11 device, so you can do this with SIMH. It tunnels the bytes sent to/from the device over a socket. We have used the SIMH emulation to connect my friend to HECnet over a (simulated) DMC11.
The bit I am not entirely sure about is to what extent this is using DDCMP as I don't have a full understanding of DDCMP.
Regards
Rob
On 31 December 2011 18:46, The Presence <tpresence at hotmail.com> wrote:
Hey guys,
Has anyone worked out a mechanism to connect a node to hecnet using DDCMP? Perhaps some tunneling technology over IP, or virtualized serial?
Kevin
I've never actually done it and it's been forever since I've looked into it but I seem to remember being able to tunnel a raw serial connection. The AUX port of one router is connected to the AUX port of another router (for example) and then you just connect your serial devices that way.
I could be completely wrong, however. :)
-brian
On Dec 31, 2011, at 19:30, The Presence <tpresence at hotmail.com> wrote:
I don't think cisco supports DDCMP, only HDLC for this...I looked into it. I hope I am wrong though.
Kevin
Subject: Re: [HECnet] Hecnet and DDCMP
From: wonko at 4amlunch.net
Date: Sat, 31 Dec 2011 17:44:11 -0500
To: hecnet at Update.UU.SE
Johnny, do you still have a copy of the serial version of your bridge program?
Alternatively I believe you can tunnel serial over IP with a pair of Cisco routers.
-brian
On Dec 31, 2011, at 16:30, The Presence <tpresence at hotmail.com> wrote:
Nice!
Any documentation/software out there that will help me do this? I have been looking around, and have seen some commentary about it, but nothing about how to get it accomplished.
Kevin
Subject: Re: [HECnet] Hecnet and DDCMP
From: wonko at 4amlunch.net
Date: Sat, 31 Dec 2011 13:59:00 -0500
To: hecnet at Update.UU.SE
Heh, we were just talking about that. That's how the original HECnet worked. :)
-brian
On Dec 31, 2011, at 12:46, The Presence <tpresence at hotmail.com> wrote:
Hey guys,
Has anyone worked out a mechanism to connect a node to hecnet using DDCMP? Perhaps some tunneling technology over IP, or virtualized serial?
Kevin
Can't help you with Google Books iPhone app. However you can download book
in PDF format, add it to iTunes and read it on iPhone via iBooks app.
-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf
Of Brian Hechinger
Sent: Sunday, January 01, 2012 12:47 AM
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] Found free good DECnet books
I sure wish I could figure out Google Books. Have the first book in my books
but the Google Books app on my iPhone doesn't see it. :(
-brian
On Dec 29, 2011, at 16:05, "Pinocchio" <pinoccio at gmx.com> wrote:
Hi all!
Recently, while searching for good DNA and DECnet source (besides ODL) I
found two wonderful books freely and completely available to anyone via
Google Books:
1) McGraw-Hill 1989, Malamud, DEC networks and architectures
http://books.google.com/books?id=0CciAQAAIAAJ&printsec=frontcover&hl=uk
2) VNR 1991, Malamud, Analyzing DECnet OSI phase V
http://books.google.com/books?id=fPJSAAAAMAAJ&printsec=frontcover&hl=uk
Bob,
I really am wanting to use DDCMP for learning purposes. I want to build a decnet phase IV network with DDCMP, however, I want to also have the ability to pass traffic through to connect to additional nodes that are net connected.
Kevin
To: hecnet at Update.UU.SE
Date: Sat, 31 Dec 2011 16:41:02 -0800
Subject: Re: SV: RE: [HECnet] Hecnet and DDCMP
From: bob at jfcl.com
What is it that you actually want to connect? For the most part, a Multinet link simulates the "user experience" of a DDCMP connection tunneled over IP. Multinet is a point-to-point DECnet circuit which, except for the device names, is functionally identical to any DDCMP link.
The only reason I can see for using a real DDCMP serial connection (either sync or async) would be to connect a machine that didn't support an Ethernet interface.
Bob
I don't think cisco supports DDCMP, only HDLC for this...I looked into it. I hope I am wrong though.
Kevin
Subject: Re: [HECnet] Hecnet and DDCMP
From: wonko at 4amlunch.net
Date: Sat, 31 Dec 2011 17:44:11 -0500
To: hecnet at Update.UU.SE
Johnny, do you still have a copy of the serial version of your bridge program?
Alternatively I believe you can tunnel serial over IP with a pair of Cisco routers.
-brian
On Dec 31, 2011, at 16:30, The Presence <tpresence at hotmail.com> wrote:
Nice!
Any documentation/software out there that will help me do this? I have been looking around, and have seen some commentary about it, but nothing about how to get it accomplished.
Kevin
Subject: Re: [HECnet] Hecnet and DDCMP
From: wonko at 4amlunch.net
Date: Sat, 31 Dec 2011 13:59:00 -0500
To: hecnet at Update.UU.SE
Heh, we were just talking about that. That's how the original HECnet worked. :)
-brian
On Dec 31, 2011, at 12:46, The Presence <tpresence at hotmail.com> wrote:
Hey guys,
Has anyone worked out a mechanism to connect a node to hecnet using DDCMP? Perhaps some tunneling technology over IP, or virtualized serial?
Kevin
