DECnet TRN Datalink spec, etc.

Paul Koning paulkoning at
Sat Apr 16 07:39:17 CDT 2016

> On Apr 15, 2016, at 8:52 PM, Dave Mitton <dave at> wrote:
> On 4/7/2016 01:00 PM, cctech-request at wrote:
>> Date: Wed, 6 Apr 2016 18:26:34 +0000
>> From: <Paul_Koning at>
>> To: <cctalk at>, <hecnet at Update.UU.SE>
>> Subject: Document treasure trove
>> While looking for DECnet documents, I noticed that there's a very large collection at .  Probably not news to many, but in case some had not seen it...
>> Among other things, there are two CD collections MDS-1997-10 and MDS-2000-01.  The former contains a rather obscure document, the DECnet Phase IV Token Ring datalink spec.  That also includes the Phase IV routing layer tweaks necessary to support token ring -- or other datalinks if you don't want to use the AA-00-04-00 prefix.
>>        paul
> As the primary author of that document, I still have a hard copy (available), and can answer any questions (if the neurons remember)   As well as a variety of other DECnet specs and documents.   Most of them were on the an HP site for awhile.  I don't know what survived the corporate split.

Thanks Dave.  The parts I studied seem quite clear (as expected).  I was thinking I might add IVprime support to DECnet/Python.  Maybe that's a bit silly, maybe not.  It clearly is valid to do so even if your interface isn't Token Ring, though I suspect it hasn't been done before.


More information about the cctalk mailing list