Expand Configuration and Management Manual (H06.21+, J06.10+)

Glossary
Expand Configuration and Management Manual — 529522-013
Glossary - 6
load factor
using the SCF ALTER PROCESS command. See also rebalancing algorithm and
Expand line-handler process pair.
load factor. The ratio between a path’s effective time factor (ETF) and its base time factor
(TF). See also effective time factor (ETF).
local system. A term used to refer to the system to which your terminal is directly
connected.
logical device name. The name assigned to an input-output process (IOP) during its
configuration.
logical device number. A number that identifies a particular input-output (I/O) device in the
system.
logical network partitioning. A NonStop TCP/IPv6 feature that allows you to divide the
system into separately-addressed IP subnetworks whereby applications only have
access to a defined set of network interfaces (IP addresses).
logical unit (LU). In the IBM Systems Network Architecture (SNA), a port by which an end
user accesses the network.
LU. See logical unit (LU).
maps exchange. A periodic sharing of network maps information. You can specify a five-
minute interval exchange by setting the network control process modifier
AUTOMATICMAPTIMER. See also distance vector (DV) message.
Measure. A tool used for monitoring the performance of HP systems. Measure can be used
in an Expand network to determine if the network is contributing to performance
problems.
modified split horizon (MSH). The default routing algorithm provided by the Expand
subsystem. The main advantage of MSH is efficiency: it requires less processing time
than the split horizon (SH) algorithm and avoids loop routing. The main disadvantage
of MSH is that the network might experience temporary discontinuity. See also
split
horizon (SH).
MPT. See multiple path table (MPT).
MSH. See modified split horizon (MSH).
multi-CPU path. The fundamental component of the Expand multi-CPU feature. A multi-
CPU path can consist of up to 16 individual Expand paths, including multi-line paths.
Each Expand line-handler process (or multi-line path) that is a member of a multi-CPU
path is configured in a different processor. See also
Expand multi-CPU feature.
multi-line path. A path between two neighbor systems that consists of more than one
physical line. You can configure as many as eight parallel lines between the same two