X25AM Configuration and Management Manual

X25AM Configuration and Management Manual—523424-004
4-1
4
SCF Commands for the X25AM
Subsystem
This section contains the following:
•
An overview of the Subsystem Control Facility (SCF), its features and operation
•
A description of the SCF interface to the X25AM subsystem
•
A description of the X25AM objects
•
Descriptions of SCF commands for the X25AM subsystem
For additional information about SCF, see the SCF Reference Manual for G-Series
RVUs or SCF Reference Manual for H-Series RVUs.
Subsystem Control Facility
The Subsystem Control Facility (SCF) configures, controls, and collects information
about G-series and H-series data communications subsystems.
The WAN subsystem configures, starts and stops, and monitors X25AM I/O processes.
The WAN subsystem must be started before you attempt to configure the X25AM
subsystem. For information on using the WAN subsystem to configure and start data
communications processes in general, see the WAN Subsystem Configuration and
Management Manual and for information on X25AM in particular, see Section 3,
Configuring an X25AM Subsystem.
The WAN subsystem does not allow you to alter and manage X25AM entities such as
lines and subdevices; you manage these entities with SCF commands to the X25AM
subsystem.
SCF provides an operator interface to a process called the Subsystem Control Point
(SCP). SCP in turn provides an interface to the various subsystem processes
performing data communications operations and services (Figure 4-1
on page 4-2).
The default SCP process, known to the system as $ZNET, provides access for
application programs (whether local or remote) to monitor and control the X25AM
subsystem through the WAN Manager process.
SCF automatically opens and closes SCP. In most cases, the default SCP is the only
one you will need. If you should need to establish an SCF session through a specific
SCP other than the default SCP, you can start additional SCPs by using either the SCF
RUN command or the TACL RUN command.