[HECnet] Others DECnets

[Paul Koning]

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On
Behalf Of Johnny Billquist
Sent: Friday, December 04, 2009 6:45 AM
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] Others DECnets

Hi.

Ian McLaughlin wrote:
Here's where I read about hidden areas:

http://labs.hoffmanlabs.com/node/271

Hmm. Interesting article, although slightly wrong or imprecise
perhaps.
What they refer to as "named objects" are actually numbered objects.
Named objects are the ones which aren't predefined in any way, and are
for random program communications.

For instance, MAIL is never refered to by a name, but instead by it's
number, which is 27. All "well known services" have specific numbers
assigned to them.

Yes and no.   It's certainly true that well known services have object
numbers assigned to them (DEC ones are in the range 1-127, and 128-255
are reserved for customer use).   However, the object identifier in the
connect message can be either a number or a name.     So while normal
practice would be to connect to mail by connecting to object 27, it's
also valid to connect to object "MAIL".

	paul