Tony,

Thanks.. that is what I was looking for.

Rob Schramm

On Thu, Mar 1, 2018, 3:45 PM Cieri, Anthony <aci...@seic.com> wrote:

>
>         You might get more feedback using the listserver
> ibmtc...@vm.marist.edu
>
>         More Communication Server folks hang out there........
>
>
>         For my 2 cent...I am going strictly by memory here.......
>
>         I believe that more of the changes in Comm. Server (VTAM) between
> z/OS 1.4 and current were in the realm of APPN/EE/HPR. If you chose EE, you
> would be doing all of the aforementioned in VTAM. It is likely that EE
> connections are possible between the 1.4 system and current, however, there
> were some enhancements along the way that are NOT compatible with "older"
> versions of VTAM. HPRSESLIM is one that comes to mind. If the 1.4 VTAM does
> NOT support HPRSESLM (I don't recall exactly when it was introduced), then
> if it is ENABLED in the VTAMOPTS of the current system, it would prevent
> the connection from being established.
>
>         If you chose CTC (MPC) for the connections, you could use Subarea
> SNA (CDRMs). Of course, it is NOT the IBM preferred choice, but it is
> stable and it is definitely supported at the z/OS 1.4 level of VTAM. There
> will be some setup and coordination involved. The amount will depend upon
> the number of systems you have to connect to the CMC.
>
>
>         Hth
>         Tony
>
>
>
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Rob Schramm
> Sent: Monday, February 26, 2018 4:47 AM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: VTAM communication z/OS 2.2 and z/OS 1.4
>
> What I want to do is run a z/OS 2.2 system as a CMC.  Currently, there is
> no connection between my z/OS 2.2 system and the z/OS 1.4 systems.  My
> concern is whether the z/OS 1.4 systems will be able to communicate with
> the z/OS 2.2 system across CTCs. Or if it would be better to attempt to run
> the communication across EE.  All of these system are in the same physical
> CEC.
>
> Thanks,
> Rob Schramm
>
>
>
>
> Rob Schramm
> Senior Systems Consultant
>
>
> On Sat, Feb 24, 2018 at 12:30 AM, Brian Westerman <
> brian_wester...@syzygyinc.com> wrote:
>
> > I'm not sure what you are getting at.  If you have a z/OS 1.4 system
> > connected via EE (or a "real" CTC connection) to a 2.2 system and you
> > tn3270 into that new(er) system, then every EE (or CTC connected, (i.e.
> > cross domain)) application that is defined to that new(er) system
> > (even if cross domain to the old box) is available.  I think what you
> > are trying to get at is that IF your old system doesn't support TCP/IP
> > but can be connected to a new(er) system that does support both EE (or
> > a CTC connection to the older box) and TCP/IP can you get to the VTAM
> > applications that are available to the older system via the
> > connections between the old system and new system, then the answer is
> > yes.  But since z/OS 1.4 also supported TCP/IP you don't need the
> > other new(er) system for that.
> >
> > How you get INTO the system (any system) via TCP then any (VTAM)
> > applications are available once you are there are available whether
> > the connection is through a physical CTC between the two systems or EE
> > (which can use IP).
> >
> > So I'm a little confused by the question.  Just because you can't
> > directly connect to the CICS region on the old(er) system via TCP,
> > doesn't mean that you can't get to it via a TCP connected device.
> > That's what the emulators are for.  But maybe that's not your question
> either.
> >
> > Sorry that I can't help any more without some clarifications.
> >
> > Brian
> >
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-- 

Rob Schramm

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