Troubleshooting Terminal, Printer and Serial Device Connections - Edition 4 (32022-90030)

142 Glossary
Glossary
intranet routing Intranet
routing involves all the processes
required to route a packet from
one node in a network to another
node in the same network.
intrinsic A system routine
accessible by user programs. It
provides an interface to operating
system resources and functions.
Intrinsics perform common tasks
such as file access and device
control.
IP See Internet Protocol.
IP address Internet Protocol
address. An address used by the
Internet Protocol to perform
internet routing. A complete IP
address consists of a network
portion and a node portion. The
network portion of the IP address
identifies a network, and the node
portion identifies a node within
the network.
IP router A node in an IP
network that connects two or
more networks and provides
address mapping between them.
The router selects messages from
incoming buffers and places
them into the appropriate
outgoing message queues.
ISO International Organization
of Standards. An international
federation of national standards
organizations involved in
developing international
standards, including
communication standards.
L
LAN Local Area Network. A
collection of data communication
systems sharing a common cable
whereby each system can
communicate directly with
another.
LAN address See DTC station
address.
LANIC See Local Area
Network Interface.
LANIC physical path The
physical location (slot number) of
the LANIC within the SPU.
LANIC Self-Test A ROM-based
program on a LANIC card that
tests and reports the status of the
LANIC hardware.
LAP Link Access Protocol. The
data link protocol specified by
older versions (prior to 1980) of
X.25 at Level 2 but still permitted
and therefore usable. All new
implementations of X.25 must use
LAP-B, and all old
implementations must migrate
to LAP-B at a future date.
LAP-B Link Access Protocol
-Balanced. The data link protocol
specified by the 1980 version of
X.25 at Level 2 that determines
the frame exchange procedures.
LAP-B must also be used over
direct-connect NS Point-to-Point
3000/iX Links.
LCI Logical Channel Identifier.
Local value on a network node
which identifies the channel used