IPX/SPX Configuration and Management Manual

Glossary
IPX/SPX Configuration and Management Manual—425731-001
Glossary-12
STOPPED
STOPPED. A summary state that indicates that an object is not ready for normal operations.
STOPPING. A summary state that indicates that an object
is in the process of being
STOPPED.
Structured Query Language (SQL). A set of commands that allows users to inquire about
the contents of a database.
Subnetwork Access Protocol (SNAP). In order to run the NonStop™ IPX/SPX protocol
suite over IEEE networks, SNAP defines the interface between the IPX Layer and the
Logical Link Control (LLC)
Layer. SNAP is a protocol that can be used with any Media
Access Control (MAC) address type: Ethernet, token-bus, or token-ring.
subnetwork. One or more intermediate systems that provide relaying and through which end
open systems may establish network connections.
subordinate names option. In Distributed Systems Management (DSM)
interfaces to
Compaq data communications subsystems, the designation that the object name given in
a command stands not just for itself but also for the names of objects at lower levels in a
hierarchy. For NonStop™ IPX/SPX, the SUB option is required for the START
SUBSYS, STOP SUBSYS, and ABORT SUBSYS commands. When this option is
present in a command, the subordinate names are implied even though they are not
given explicitly.
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.