SNA NRJE Node Managers Guide (30292-90007)

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Glossary
A
ACF: See Advanced
Communication Function.
ACF/NCP: See Advanced
Communication Function for
the Network Control Program.
ACF/VTAM: See Advanced
Communication Function for
the Virtual
Telecommunications Access
Method.
active state: A state in which
part of an SNA node is able to
function as it was designed.
Advanced Communication
Function (ACF): AgroupofIBM
program products that uses SNA
concepts.
Advanced Communication
Function for the Network
Control Program (ACF/NCP):
An IBM program product that
resides in the 37xx
Communications Controller and
supports single and multiple
domains.
Advanced Communication
Function for the Virtual
Telecommunications Access
Method (ACF/VTAM): An IBM
program product on the host that
provides communication access to
and from the SNA network for
single and multiple domains.
B
batch communications: A form
of data communications in which
a facility collects data over a
period of time and then submits
the collected information to a host
computer. Typical batch
communications consist of large
amounts of information
transmitted at infrequent
intervals.
batch processing: A technique
of data processing in which jobs
are collected and grouped before
processing. Data is collected over
a period of time, then submitted
to a host computer.
bind: An SNA request sent by
the host to activate a session
between two logical units. The
request specifies the detailed
protocol to be accepted before
initiating an LU-LU session.
C
chain: A sequence of RUs
constituting a recoverable entity.
CI: See Command Interpreter.
cluster controller: A
programmable device that
supports one or more terminals or
printers. For example, the cluster
controller would be the center
node in a star shaped cluster
network, governing all message
traffic to and from the other
nodes. A cluster controller
communicates with the
communications controller either