[HECnet] DECnet User Mode Router - Encapsulation Formats

[Rob Jarratt]

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE]
On Behalf Of Paul_Koning at Dell.com
Sent: 23 June 2012 01:49
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] DECnet User Mode Router - Encapsulation Formats


On Jun 22, 2012, at 6:11 PM, Rob Jarratt wrote:

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-
hecnet at Update.UU.SE]
On Behalf Of Paul_Koning at Dell.com
Sent: 22 June 2012 22:25
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] DECnet User Mode Router - Encapsulation Formats


On Jun 22, 2012, at 4:07 PM, Rob Jarratt wrote:


DDCMP over some kind of serial line? Would need appropriate hardware
and driver code to work against that.

DDCMP over sync, yes.   But DDCMP also works on an async line, and
that
just
requires protocol code that can talk to a raw mode TTY device.   That
would work for what I need -- I have async DDCMP on my PRO-380
running RSTS, and in fact it's a standard feature of some of the PDP11
DECnet products.
(I'm not sure if it was ever official in DECnet/E, but the machinery
is
there in
the latest versions of the kernel.)

	paul

Hmmm, so if we can use async serial then we have a chance to add that
to the router once I have had a chance to do the main part. It would
be good to do something like that. I don't know enough about DDCMP yet
to know what the implications are (can it work with a Version 2 router
for
example?).

Regards

Rob

Version 2?   Do you mean Level 2? 

No I mean version 2, as in this spec here:
http://www.openvms.compaq.com/wizard/decnet/route20.txt