TCP/IP (Parallel Library) Configuration and Management Manual

Glossary
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
Glossary-19
Subsystem Programmatic Interface (SPI)
Subsystem Programmatic Interface (SPI). In DSM, a set of procedures and associated
definition files used to define common message-based programmatic interfaces for
communication between requesters and servers—for instance, in a management
application. SPI includes procedures to build and decode specially formatted
messages; definition files in Pascal, TAL, C, COBOL85, and TACL for inclusion in
programs, macros, and routines using the SPI procedures; and definition files in DDL
for programmers writing their own subsystems.
summary state. In DSM interfaces to NonStop data communications subsystems, one of
the generally defined possible conditions of an object, with respect to the management
of that object. A summary state differs from a state in two ways. First, a summary state
pertains to the management of an object, whereas a state may convey other kinds of
information about the object. Second, summary states are defined in the same way for
all NonStop data communications subsystems, whereas the set of possible states
differs from subsystem to subsystem. The management programming interfaces to
NonStop data communications subsystems refer to summary states rather than to
states. Examples of summary states are STARTED, STOPPED, SUSPENDED, and
ABORTING.
SWAN concentrator. See ServerNet wide area network (SWAN) concentrator.
symbolic name. In DSM programmatic interfaces, a name used in programs to refer to
commonly used values, token codes, token maps, extensible structures, and other
related variables for use in management programs.
TCP. See Transmission Control Protocol (TCP).
TELNET. The Internet standard protocol for remote terminal connection service. TELNET
allows a user at one site to interact with remote timesharing systems at another site
just as if the user's terminal is connected directly to the remote machine. That is, the
user invokes a TELNET application program that connects to a remote machine,
prompts for a login id and password, then passes keystrokes from the user's terminal
to the remote machine and displays output from the remote machine on the user's
terminal.
TFTP. See Trivial File Transfer Protocol (TFTP).
token. In DSM use, a distinguishable unit in a SPI message. Programs place tokens in an
SPI buffer using the SSPUT or SSINIT procedures and retrieve them from the buffer
with the SSGET procedure. A token has two parts: an identifying code, or token code,
and a token value. In command and response messages, a token normally represents
a parameter to a command, an item of information in a response, or control information
for the subsystem. In event messages, a token normally represents an item of
information about an event or about the event message itself. See also header token.
token number. In DSM programmatic interfaces, the number used by a subsystem to
identify each DSM token that it defines. The token type and the token number together
form the token code.