Bob,
Never heard the "lost source" story. I was under contract to IBM TJ
Watson in early 90's doing LEVEL II & III thingies for VM & MVS TCPIP. The
MVS TCPIP was crafted by marrying the VM TCPIP to Dave Doner's and Dean
Hiller's marvel "the platform" which provided much of VM functionality
under MVS.
My recollection was that it performed quite well. In mid 90's I did some
tweaking of the FTP client & Server (VS/Pascal, PL/X and assembler) to catch
up to and pass InterLink's FTP. I later made similar improvements to IBM's
newer FTP Server (written in C, PL/X and assembler).
There was an interim TCPIP stack (HPNS or high performance network
something-or-other) which didn't quite live up to performance and stability
expectations. It was soon replaced by a radically redesigned stack (after I
finished up part-time telecommute around '97 or '98. Have no idea as to
current z/OS stack and applications.
It was my understanding the original VM TCPIP was largely based on
WISCNET's (Univ of Wisconsin) Pascal code (Vax?).
- Jim Keohane
----- Original Message -----
From: "Bob Shannon" <[EMAIL PROTECTED]>
Newsgroups: bit.listserv.ibm-main
To: <[email protected]>
Sent: Tuesday, March 28, 2006 6:02 PM
Subject: Re: Barbaras (mini-)rant
>I've heard the "taken from VM's TCP/IP stack" story from several
different >sources, too.
IIRC, the stack was ported and subsequently supported by someone at the
T.J. Watson Lab. At SHARE there were a few people, primarily from the
government and universities, who used it. We used to laugh at their
problems - this is probably 12 or more years ago. Then there was a
sudden push by IBM to have customers upgrade to the newest release. It
turns out they lost the source for the older release and couldn't
support it. That may have pushed IBM to move TCP/IP it to a mainstream
development lab.
Bob Shannon
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