Expand Configuration and Management Manual (H06.03+)

Glossary
Expand Configuration and Management Manual—529522-002
Glossary-18
switched virtual circuit (SVC)
switched virtual circuit (SVC). A virtual circuit that is dynamically established on demand.
See also permanent virtual circuit (PVC).
SYSTEM command. A network-related HP Tandem Advanced Command Language
(TACL) command that designates a default system name.
system load. (1) To start the system; to load the operating system image from disk or tape
into the memory of a processor. (2) The process of loading a copy of the operating
system into a halted processor. All processors in a system must be halted before a
system load can occur. (3) The process of loading the operating system. A system load
changes a system from an inactive to an active (or operational) state by loading
software that establishes communications between the operating system and
configured peripherals.
system name. The name assigned to a system. The system name is preceded by a
backslash (\) and can consist of from one to seven alphanumeric characters. The first
character is always alphabetic. Examples of valid system names are \CITY, \SYS43,
and \XYZ.
Systems Network Architecture (SNA). A description of the logical structure, formats,
protocols, and operational sequences for transmitting information units through, and
controlling the configuration and operation of, networks.
TCP. See Transmission Control Protocol (TCP).
TCP port. See port number.
TCP6SAM process. The name of the NonStop TCP/IPv6 access method.
TF. See time factor (TF).
TFTP. See Trivial File Transfer Protocol (TFTP) server process.
throughput. The amount of traffic that can be handled by an Expand line-handler process.
time factor (TF). A number assigned to a line, path, or route to indicate efficiency in
transporting data. The lower the TF, the more efficient the line, path, or route.
Transmission Control Protocol (TCP). The Internet standard transport-level protocol that
provides the reliable, full-duplex stream service on which many application protocols
depend. TCP allows a process on one machine to send a stream of data to a process
on another. It is connection-oriented, in the sense that before transmitting data
participants must establish a connection. Software implementing TCP usually uses the
Internet Protocol (IP) to transmit information across the Internet. The IP suite is often
referred to as TCP/IP because TCP is one of the two most fundamental protocols. See
also User Datagram Protocol (UDP).
Trivial File Transfer Protocol (TFTP) server process. A process created by the WAN
Manager process ($ZZWAN) that runs as a process pair in each processor that