Configuring and Managing Host-Based X.25 Links - Edition 5 (36939-90054)

Glossary 205
Glossary
nailed device A device with a
permanently associated ldev that
was assigned through the
NMMGRconfiguration of the host
system on which the association
is established. Nailed devices can
be accessed programmatically
through their ldev number. In
contrast, non-nailed devices have
ldev numbers that are assigned
from a pool of available ldev
numbers for the life of their
connection to a system.
native mode The run-time
environment of MPE/iX. In
Native Mode, source code has
been compiled into the native
instruction set of the HP 3000
Series 900 computer.
neighbor gateway A gateway
that is in the same network as a
given node.
NetIPC Network Interprocess
Communication. Software that
enables programs to access
network transport protocols
network A group of computers
connected so that they can
exchange information and share
resources.
network address This can be
either 1) the network portion of
an IP address as opposed to the
node portion, or 2) when referring
to X.25 networks, it is a node’s
X.25 address.
network boundary The logical
division between networks in an
internetwork.
network directory A file
containing information required
for one node to communicate with
othernodesin1) an internetwork,
2) an X.25 network, or 3) a
network that contains non-HP
nodes. The active network
directory on a node must be
named NSDIR.NET.SYS.
network interface NI. The
collective software that enables
data communication between a
system and a network. A node
possesses one or more network
interfaces for each of the
networks to which it belongs.
Network interface types are LAN,
point-to-point (router), X.25,
token ring, SNA, loopback, and
gateway half. The maximum
number of supported NIs is 12,
one of which is reserved for
loopback.
network management The
collective tasks required to
design, install, configure,
maintain, and if necessary,
change a network.
network map A drawing that
shows the topology of the
network. For networks managed
by the OpenViewDTC Manager, a
network map must be created
using the OVDraw capability
provided with the management
software. A network map is also a
hardcopy drawing used when
planning a network. It shows
network topology, node and
network names, addresses,