APPC Subsystem on MPE/XL Node Manager's Guide (30294-90007)

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specifications for programmatic
interfaces,documentinterchange,
and data distribution.
M
mapped conversation: A
programmatic conversation in
which the application is freed
from handling the GDS headers
required by the LU 6.2
architecture.
mapped conversation verbs:
The programmatic
implementation of functions and
protocols in a mapped
conversation between transaction
programs. (See basic conversation
verbs.)
N
Network Addressable Unit
(NAU): An entity in a network
that can send or receive data. The
three types of NAUs are System
Service Control Points (SSCPs),
Physical Units (PUs), and Logical
Units (LUs).
Network Control Program
(NCP): The program in the
communications controller that
controls data traffic for the host.
Node Type 2.0: The node type
for a peripheral node or cluster
controller. Node Type 2.0 is
supported by the APPC
subsystem on MPE V and
MPE XL.
Node Type 2.1: The node type
for a peripheral node or cluster
controller capable of peer-to-peer
communication. Node Type 2.1 is
supported by the APPC
subsystem on MPE XL.
Node Type 4: The node type for
a subarea node with a
communications controller.
Node Type 5: The node type for
a host node with an SSCP
(System Services Control Point).
P
pacing window: The number of
RUs that can be sent before a
response is required from the
receiving RU.
peripheral: A device on the
network, like a printer or disk
drive, that functions as an end
user for data.
Physical Unit (PU): The
software and hardware of an SNA
node that controls the resources
of the node and reports errors and
physical failures to the SSCP.
There is one PU per node.
PU: See Physical Unit.
PU 2.0: See Node Type 2.0.
PU 2.1: See Node Type 2.1.
R
remote TP: The TP running on
the remote processor.