Tom
> That's V2R5
Quite correct, OS/390 V2R5 ("VEE" "TWO" "AR" "FIVE")
-
> The new Communications Server component was introduced in V2R4,
I don't find this really quite so correct! This appears to refer to some "quick
fix" called the "Outboard Communications Server" (OCS) which allowed a LAN- or
channel-attached RS/6000 running AIX to act as some sort of "front-end
processor" for an OS/390 system. It doesn't have much to do with the
"Communications Server" I cover below.
> ... but only for Unix applications.
That is, for the benefit of OpenEdition running IP-based applications.
OS/390 OpenEdition Communications Server Guide
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/BPXBE03/
Note that this is the only reference to "Communications Server" I find on an
OS/390 V2R4 "shelf".
-
The evidence that V2R5 is the release where "TCP/IP for MVS" and "VTAM" got
into bed together as "Communications Server" - and what the original post
presumably had in mind - is contained in the following references:
>From "OS/390 V2R5 eNetwork Communications Server IP Planning and Migration
>Guide":
<quote>
PREFACE About This Book
The purpose of this book is to provide an overview of eNetwork Communications
Server for OS/390 Version 2 Release 5 (CS for OS/390), including a
comprehensive survey of the differences between it and the following previous
releases of IBM's TCP/IP product:
- TCP/IP Version 2 Release 2.1
- TCP/IP Version 3 Release 1
- TCP/IP Version 3 Release 2
- TCP/IP Version 3 for OpenEdition MVS Applications Feature, which was
available with TCP/IP Version 3
- TCP/IP OpenEdition Feature
</quote>
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/F1AF9000/PREFACE
>From "OS/390 V2R5 eNetwork Communications Server SNA Planning and Migration
>Guide":
<quote>
PREFACE About This Book
This book explains how to install IBM eNetwork Communications Server for OS/390
V2R5 (hereafter known as CS for OS/390 V2R5) and how to upgrade VTAM(*) V4R4,
V4R3, V4R2, V4R1, or V3R4.2 to CS for OS/390 V2R5.
</quote>
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/F1AF6000/PREFACE
-
> IIRC, the CS included VTAM and TCP/IP and they were pretty tightly integrated.
Not really. The key area of integration is that creating the logic for new
types of interface was handed to the VTAM developers, hence TRLEs, and the QDIO
interface implementation could be shared between the two "upper level
protocols".[1]
Also of course, there was a certain interaction between the two teams required
in order to provide Enterprise Extender. However, even here, VTAM takes on the
appearance of a "same host" instance of the Communications Server IP component,
the "seams" tend to "show"!
-
I'm reminded of a phrase from a song in a play I performed at school "The
founts of quotation when meeting in fray!". It was a translation of
Aristophanes, "The Frogs" of course!
-
[1] One of the rather limited cases of "tight integration":
7.2 Defining an OSA-Express device to z/OS Communications Server using QDIO
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/f1a1b5b0/7.2
-
Chris Mason
On Tue, 6 Dec 2011 09:23:39 -0600, Tom Marchant <m42tom-ibmm...@yahoo.com>
wrote:
>On Tue, 6 Dec 2011 08:48:40 -0600, Chris Mason wrote:
>
>>Indeed there was an upheaval in OS/390 V1R5 ("VEE" "ONE" "AR" "FIVE")
>
>That's V2R5, as you noted below. The new Communications Server component was
>introduced in V2R4, but only for Unix applications. IIRC, the CS included
>VTAM and TCP/IP and they were pretty tightly integrated.
>
>The announcement of 2.4 and preview of 2.5 is here:
>http://www-01.ibm.com/common/ssi/ShowDoc.jsp?docURL=/common/ssi/rep_ca/6/877/ENUSZP97-0486/index.html&lang=en
>
><quote>
>CS OS/390 adds a new, completely redesigned,TCP/IP stack, which exploits
>native OS/390 services and multiprocessing capability, for significantly
>improved performance, reliability, availability, serviceability, and
>scalability.
></quote>
>
>This agrees with my memory of SHARE sessions from the era.
>
>--
>Tom Marchant
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