Token-Ring Adapter Installation and Support Guide

Glossary
Token-Ring Adapter Installation and Support Guide—426955-001
Glossary-6
state
state. (1)The current condition of a device or path to a device. (2) In SCF subsystems, one of
the generally defined possible conditions of an object with respect to the management of
that object, for example, DEFINED, STARTED, and STOPPED.
subsystem. (1) a secondary or subordinate system, usually capable of operating
independently of or asynchronously with a controlling system. (2) A program or set of
processes that manages a cohesive set of Subsystem Control Facility (SCF) objects.
Each subsystem has a manager through which applications can request services by
issuing commands defined by that subsystem. See also subsystem manager
.
Subsystem Control Facility (SCF). An interactive interface for configuring, controlling, and
collecting information from NonStop™ Himalaya S-series subsystems.
Subsystem Control Point (SCP). The management process for all Subsystem Control
Facility (SCF) subsystems. There can be several instances of this process. Using the
Subsystem Programmatic Interface, applications send each command for a subsystem to
an instance of this process, which in turn sends the command to the manager process of
the target subsystem. SCP also processes a few commands itself. It provides security
features, version compatibility, support for tracing, and support for applications
implemented as process pairs.
subsystem manager. A Subsystem Control Facility (SCF) process that performs
configuration and management functions for an SCF subsystem.
SWAN concentrator. See ServerNet wide area network (SWAN) concentrator
.
TCP. See Transmission Control Protocol (TCP)
.
TCP/IP. See Transmission Control Protocol (TCP)
and Internet Protocol (IP).
Token-Ring. A network with a ring topology that passes tokens from one attaching device to
another.
Token-Ring ServerNet Adapter (TRSA). The hardware used to connect an S-series server
to a Token-Ring network.
Transmission Control Protocol (TCP). A connection-oriented protocol that provides for the
reliable exchange of data between a sending and a receiving system. TCP implements
functions corresponding to the Open Systems Interconnections (OSI) Reference Model-
Layer 4, the Transport Layer. See also Internet Protocol (IP)
.
TRSA. See Token-Ring ServerNet Adapter (TRSA)
.
TSM. See Compaq Tandem Service Management (TSM) package
.
wide area network (WAN). A network that operates over a larger geographical area than
that provided by a local area network (LAN). The elements of a WAN may be separated
by distances great enough to require telephone communications. See also local area
network (LAN).