LU type 0

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#355

From: "John A. Pershing Jr."
Date: Wed, 17 Jan 1990 14:51

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From an SNA perspective, there isn't an "LU Type 0" protocol.  Or, to put
it another way, an LU-0 session doesn't have any architected rules: it
is more-or-less outside of the realm of SNA, and any rules are strictly
by agreement between the two communicating LUs.  There are potentially
an infinite number of "LU-0" protocols...

There *are* a couple of commonly-used protocols that fall in the LU-0
category:  BiSync 3270s; and SLU-P.  I don't have a reference handy for
the BiSync 3270 protocols; I believe that SLU-P is described in the IMS
communications manual, probably in the ACP/TPF manuals, and probably also
in the manuals that describe IBM's financial clusters (the 3600 and 4700
series machines).  I don't think that the IBM manuals actually use the
name "SLU-P" (which means "Secondary LU -- Programmable"), but this is
the term that is used in the financial community.

      John Pershing
      IBM Research, Yorktown Heights

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From: PERSHNG@YKTVMH3.BITNET ("John A. Pershing Jr.")
Newsgroups: comp.protocols.ibm
Subject: LU type 0
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Date: 17 Jan 90 14:51:57 GMT
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