NBX Manual

Glossary
NBX Manual—424774-001
Glossary-13
subsystem
subsystem. In general terms, the software and/or hardware facilities that give users access to
a set of communications services. In Distributed Systems Management (DSM), a
program or set of processes that manages a cohesive set of objects. Each subsystem has
a process through which applications can request services by issuing commands defined
by that subsystem; in some cases, this process is the entire subsystem. Many subsystems
also have interactive interfaces.
Subsystem Control Facility (SCF). A part of Distributed Systems Management (DSM)
,
used to provide a common, interactive management interface for configuring,
controlling, and collecting information from Compaq data communications products.
Subsystem Control Point (SCP). In Distributed Systems Management (DSM)
, the
management process for all Compaq data communications subsystems. There can be
several instances of the SCP process. Commands for data communications subsystems
are sent to an instance of SCP, which in turn sends the commands on to the manager
processes of the target subsystems. SCP also processes a few commands itself. It
provides security features, version compatibility, and support for tracing and for
applications implemented as NonStop process pairs. See also management process
.
subsystem ID (SSID). In Distributed Systems Management (DSM)
programmatic interfaces,
a data structure that uniquely identifies a subsystem. It consists of the name of the owner
of the subsystem (such as Compaq), a subsystem number that identifies that particular
subsystem, and a subsystem version number.
summary state. In Distributed Systems Management (DSM)
interfaces to Compaq data
communications subsystems, one of the generally defined possible conditions of an
object, with respect to the management of that object. Summary states for NonStop
IPX/SPX objects include ABORTING, DEFINED, STARTED, STARTING, STOPPED,
and STOPPING.
SYSGEN. The Compaq system generation program, used to configure objects such as
devices, controllers, and I/O processes in a newly installed system, or to update the
system when new software is released. Objects to be configured are defined to SYSGEN
in a special configuration file, which can then be cold loaded into the system.
TACL. See Tandem Advanced Command Language (TACL)
.
TAL. See Transaction Application Language (TAL)
.
Tandem Advanced Command Language (TACL). The user interface to the Compaq
NonStop Kernel operating system. TACL is both a command interpreter and a command
language interface (CLI). The TACL command interpreter uses the ITI protocol. Users
can write programs in TACL as a way to perform complex tasks simply or to provide a
consistent user interface across independently programmed applications.