OSI/FTAM and OSI/APLMGR SCF Reference Manual

Introduction to SCF for Tandem FTAM
OSI/FTAM and OSI/APLMGR SCF Reference Manual—421943-001
1-5
Subsystem Control Facility (SCF) and Other
Distributed Systems Management (DSM) Tools
Tandem OSI/AS manages the communication of messages between a local Tandem
system and a remote system on a network, providing ACSE (in the Application Layer),
Presentation Layer, and Session Layer services. OSI/AS uses the lower-layer services
provided by OSI/TS along with TLAM (or PAM for G-series systems), X25AM, or
TCP/IP.
OSI/TS manages the communication of messages from the Transport Layer on a local
Tandem system to the same layer on a remote system on a network. TLAM (or PAM for
G-series systems), X25AM, and NonStop TCP/IP are products that implement the Data
Link Layer or Network Layer services for LANs (TLAM or PAM) or WANs (X25AM
or TCP/IP).
When a local user application requests FTAM services on a remote system, APLMGR
sets up the initial communications interface. The address information required to
establish an association with the remote system is stored locally in the management
information base (MIB) of the OSI manager process that controls OSI/AS.
When a remote user application requests the FTAM services of a local Tandem FTAM
responder, the request is routed up through the underlying Tandem OSI processes to the
responder; APLMGR is not involved. However, the required address information must
be stored in the OSI manager MIB.
For more information on APLMGR and FTAM subsystem interdependencies, see the
OSI/FTAM Configuration and Management Manual.
Subsystem Control Facility (SCF) and Other
Distributed Systems Management (DSM) Tools
The Subsystem Control Facility (SCF) is a management interface common to a variety
of Tandem data communications products, including Tandem FTAM and underlying
subsystems. This manual describes the SCF interface to Tandem FTAM.
This subsection contains information to help you get started using SCF. It is not intended
to be a substitute for the Subsystem Control Facility (SCF) Reference Manual (for
D-series releases) or the SCF Reference Manual for G-Series Releases.
Distributed Systems Management (DSM) is a set of tools for managing and monitoring
Tandem communications products. Figure 1-2
on page 1-6 shows the DSM tools
available for managing Tandem FTAM through the management interface: the
Subsystem Control Facility (SCF), the Event Management Service (EMS), and the
PTrace (print trace) utility.