NET/MASTER Management Services (MS) Operator's Guide

Overview of DSNM
Accessing External Utilities and Applications
106379 Tandem Computers Incorporated 7–3
Overview of DSNM DSNM is a set of processes, databases, and log files that perform transport, subsystem
interface, and status-monitoring services for network management applications.
DSNM:
Maintains a real-time database of information about subsystem objects that are
defined to nodes in the network.
Processes a set of commands, the DSNM subsystem command set, which enables
you to:
Control various subsystems in a network by removing resources from service
and restoring them later (ABORT, STOP, and START).
Display status information about network objects (AGGREGATE, INQUIRE,
and STATUS).
Gather information about how network objects are configured (INFO).
Display operational statistics about network objects (STATISTICS).
Define how DSNM monitors subsystem objects (UPDATE).
Translates command responses from diverse subsystems into standard DSNM
responses.
Interprets subsystem events and forwards object state-change information to
requesting applications.
Note In the context of Tandem systems, a subsystem is a process or set of processes that manages a
cohesive set of objects. Objects are items subject to independent reference and control by a subsystem,
such as Pathway applications and terminals handled by Pathway, communication lines controlled by
SNAX, or jobs managed by a spooler process. Objects relate conceptually to the subsystems that control
them and are often referred to as subsystem objects.
NonStop NET/MASTER MS is a network management application that utilizes
DSNM. NetStatus, which is optionally accessible through NonStop NET/MASTER
MS, is another.