NonStop System Glossary

store and forward routing
A form of message routing whereby a router must receive an entire packet or message before it
can start to forward the packet or message to the next router. Contrast with wormhole routing.
STP
See shielded twisted pair (STP).
strictly conforming POSIX.1 application
An application that requires only the facilities described in ISO/IEC IS 9945-1:1990 and the
applicable computer language standards. Such an application must accept any behavior or value
described in ISO/IEC IS 9945-1:1990 as unspecified or implementation-defined and, for symbolic
constants, accept any value permitted by ISO/IEC IS 9945-1:1990.
structured view of the user ID
A view of the HP NonStop operating system user ID, normally used in the Guardian environment,
that consists of either the group-number, user-number pair of values or the
group-name.user-name pair of values.
SUB option
In some Subsystem Control Facility (SCF) subsystems, the designation that the object name given
in a command stands not just for itself but for the names of all objects at the next-lower level in the
hierarchy. The given object name can stand both for itself and for the subordinate objects, or it
can stand only for the subordinate objects, depending on the value of the SUB option.
subnet
See subnetwork.
subnetwork
A physical network within an Internet protocol (IP) network. Each IP network can be divided into
a number of subnetworks. Within a given network, each subnetwork is treated as a separate
network. Outside the network, the subnetworks appear as part of a single network. The terms
subnetwork and subnet are used interchangeably.
subnetwork address
An extension of the Internet protocol (IP) addressing scheme that allows a site to use a single IP
address for multiple physical networks. A subnetwork address is created by dividing the local part
of an IP address into a subnetwork number (identifying a particular subnetwork) and a host number
(uniquely identifying the host system within the subnetwork). The terms subnetwork address and
subnet address are used interchangeably.
subordinate objects
In Subsystem Control Facility (SCF), objects that are logically subordinate to other objects. Some
subsystems are structured hierarchically, with objects of one type logically subordinate to (that is,
controlled by) an object of another type. For example, a number of subdevices can be configured
on a single line. Some SCF commands include a SUB option that refers to subordinate objects.
Subscriber Channel (SC)
A type of head on a fiber-optic cable in which the pins connect through a push-pull mating interface.
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