Chris Mason wrote:
Robert
I thought I'd dig further into this IUCV point and I found a reference
in the IP Configuration Guide. It appears that IUCV, VMCF and TNF
"stuff" is still available, you just don't necessarily need it. It would
appear to have become an *optional* bit of preparation for the use of
the Communications Server (CS) IP component from being *required* as it
was when I used to teach TCP/IP for MVS.
It is described in the CS IP Configuration Guide under "Chapter 2.
Configuration overview", "Required steps before starting TCP/IP" as
"Step 3: Configure VMCF and TNF" on page 111 of the z/OS 1.8 manual. It
appears that the section headers are logically incorrect since, as far
as I can tell, it really is an *optional* step and depends on whether or
not the Pascal API is used or not. The clearest indication that this
step really is optional is "... therefore, some installations will
require setting up VMCF and TNF." at the end of the first paragraph.
I then found Dana Mitchell's post where he/she said something of the
same as above.
Chris Mason
the original tcp/ip implementation was done in vs/pascal on vm370
(20 yrs ago) ... but there were some number of implementation bottlenecks
... such that it got about 44kbyte/sec aggregate thruput consuming a
3090 processor. i then did rfc1044 support for the product and in some
tuning tests at cray research (between 4341 clone and a cray machine)
was getting 4341 channel media speed thruput using only a modest amount of
the 4341 clone.
http://www.garlic.com/~lynn/subnetwork.html#1044
for some topic drift, recent post mentioning vs/pascal
http://www.garlic.com/~lynn/2007o.html#61 (Newbie question)How does the modern
high-end processor been designed?
which is slightly related to topic in this newsgroup since the los gatos
vlsi tools group was responsible for the 370 pascal implementation
as well as the "LSM"
http://www.garlic.com/~lynn/2007o.html#67 1401 simulator for OS/360
somewhat drifting back to the topic, a port of the implementation was
then done for mvs ... by doing a (vm370) vmcf/iucv emulator for
mvs systems.
for other background ... internally there was something called
spm that was originally implemented on cp67 (precursor to vm370
that ran on 360/67s) which was a superset of the later vmcf and
iucv implementations. there was somewhat internal dissension
leading up to the initial vmcf release ... since spm had been
around for much longer period and had so much more function.
Later, iucv was released to cover some additional function (also
covered by spm) that was handled by vmcf.
some old email with spm reference
http://www.garlic.com/~lynn/2006w.html#email750430
http://www.garlic.com/~lynn/2006k.html#email851017
misc. old posts mentioning spm:
http://www.garlic.com/~lynn/2002d.html#31 2 questions: diag 68 and calling
convention
http://www.garlic.com/~lynn/2004m.html#20 Whatever happened to IBM's VM PC
software?
http://www.garlic.com/~lynn/2005m.html#45 Digital ID
http://www.garlic.com/~lynn/2006k.html#51 other cp/cms history
http://www.garlic.com/~lynn/2006t.html#47 To RISC or not to RISC
http://www.garlic.com/~lynn/2006w.html#8 Why these original FORTRAN quirks?
http://www.garlic.com/~lynn/2006w.html#12 more secure communication over the
network
http://www.garlic.com/~lynn/2006w.html#16 intersection between autolog command
and cmsback (more history)
http://www.garlic.com/~lynn/2006w.html#52 IBM sues maker of Intel-based
Mainframe clones
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