SNAX/APC Management Programming Manual

1 Introduction to SNAX/APC
111813 Tandem Computers Incorporated 1–1
Tandem’s SNAX Advanced Program Communications (SNAX/APC) consists of
several programs and support files that jointly form a subsystem. The purpose of this
subsystem is to allow programs in a Tandem system to communicate with programs
supporting LU 6.2 in an SNA network.
This release of SNAX/APC supports the management programming interface
provided by Tandem’s Distributed Systems Management (DSM). DSM products
support integrated networks and system management with various applications, tools,
and services. All DSM products depend upon the Subsystem Programmatic Interface
(SPI): a set of procedures, definitions, and protocols that build, send, retrieve, and
decode tokenized messages sent between management applications and subsystems.
In addition, SNAX/APC supports the Event Management Service (EMS) and the
Subsystem Control Facility (SCF) interactive interface.
EMS collects and logs all of the EMS events generated by SNAX/APC. An EMS event
is a tokenized message that is sent to an EMS collector in an SPI message buffer. An
EMS collector collects event messages and saves them in log files. Management
applications use distributor processes to retrieve event messages from EMS collector
log files.
SCF provides standard control-and-inquiry functions for data communications
subsystems like SNAX/APC. For a complete description of the SCF commands that
relate to SNAX/APC, refer to the SCF Reference Manual for SNAX/APC.