Path: utzoo!yunexus!geac!sean
From: sean@geac.UUCP (Sean Phelan)
Newsgroups: comp.dcom.lans
Subject: 3270 emulations
Summary: is a 3270 running SNA restricted to 32 sessions?
Keywords: SNA 3270
Message-ID: <7112@geac.UUCP>
Date: 14 Apr 89 22:18:45 GMT
Article-I.D.: geac.7112
Reply-To: sean@geac.UUCP (Sean Phelan)
Distribution: can
Organization: Geac Computers, Markham, Ontario Canada
Lines: 28

I'm using a Motorola Delta box with a 3270/SNA emulation package to
implement a gateway into IBM hosts.  Terminals on our system appear
to the IBM as 3278 terminals on a 3274 controller.

A real 3274 controller supports a maximum of 32 terminals.  However
our computer has considerably more than 32 terminals on it.  We could
just let every new terminal that wants to go through the gateway have
the next free 3278 emulation, up to a maximum of 32.  The IBM people
don't like that, though, because they are used to identifying specific
terminals by their physical address - controller and terminal number.

So my question to the net is :  Is there REALLY a limit of 32 terminal
addresses ( LUs ) on a 3270, or is it just a hardware limitation of
the original boxes, which can be ignored by software emulations ?

On a related subject, if there is anybody out there doing comms work
on the Motorola Delta boxes, especially with SNA and X.25, who would
like to share experiences/horror stories, PLEASE mail me !!

Thanks very much !!

Sean
  
-- 
Sean Phelan                                   | "Education furnishes the mind,
Geac Computer, Markham, Ontario               |  making it a pleasant place to
sean@geac                                     |  spend the rest of one's life"
{uunet!mnetor,yunexus,unicus,utgpu}!geac!sean |