SNAX/XF and SNAX/APN Event Management Programming Manual

Glossary
SNAX/XF and SNAX/APN Event Management Programming Manual—426859-001
Glossary-11
management application
management application. In general, an application that monitors or controls another entity.
In the context of DSM, an application process that opens a management or subsystem
process to control a subsystem. This process can issue SPI commands to subsystems and
retrieve EMS event messages to assist in managing a computer system or a network of
systems. A management application is a requester with respect to the subsystems to
which it sends commands; the subsystems are servers with respect to the management
application.
management process. A process through which an application issues commands to a
subsystem. A management process can be part of a subsystem, or it can be associated
with more than one subsystem; in the latter case, the management process is logically
part of each of the subsystems. SCP is the management process for all Compaq data
communications subsystems that support DSM. See also subsystem
and Subsystem
Control Point (SCP).
manager process. A Compaq subsystem process with which the SCP management process
communicates to control a particular data communications subsystem.
medium access control (MAC). The sub-layer of DLC that supports medium-dependent
functions and uses the services of the physical layer to provide services to the LLC.
microcode. A code representing the instructions of an instruction set, that is, implemented in
a part of storage that is not program-addressable.
NAU. Network addressable unit.
NCP. Network control program.
network. A group of interconnected computer systems and devices, and the hardware and
software used to connect them.
network management. Systems management for a network of computer systems.
node. (1) A station or physical device that allows for the transmission of data within a
network. (2) In SNA, an endpoint of a link or junction common to two or more links in a
network. There are peripheral and subarea nodes. Nodes include host processors,
communication controllers, cluster controllers, or terminals. Nodes can vary in routing
and other functional capabilities. Each SNA node must contain at least one NAU. See
also node type (NT)
.
node type (NT). In SNA, a designation of a node according to the protocols it supports and
the network-addressable units that it can contain. Five types are defined: 1, 2.0, 2.1, 4
and 5. The difference between type 2.0 nodes and type 2.1 nodes reflects the two
different approaches that SNA defines for connecting nodes into networks — subarea
networking and advanced peer-to-peer networking.
noncritical event. An EMS event not considered crucial to the operation of the system or
network and that has no serious consequences; for example, a line becoming ready. The
event message for a noncritical event contains the ZEMS-TKN-EMPHASIS token with
a value of ZSPI-VAL-FALSE. See also critical event
.