Configuring and Managing Host-Based X.25 Links - Edition 6 (36939-90057)

Glossary
IEEE 802.3 multicast address
Glossary
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IEEE 802.3 multicast address A hexadecimal
number that identifies a set of nodes. This address is
used for multicast delivery.
IEEE 802.3 nodal address A unique hexadecimal
number that identifies a node on an IE E E802.3
LAN.
IEEE 802.5 A standard for a token ring network
published by the Institute for Electrical and
Electronics Engineers (IEEE). This standard is used
for the Token Ring 3000/iX Network Link.
initialization string A sequence of control
characters used to initialize a terminal, printer, or
plotter when a connection is established from a host
on the network.
interactive communications Processing that
allows users to enter commands and data at the
terminal and receive an immediate response.
internet communication Communication that
occurs between networks.
internet hop count The number of full gateways
plus the number of gateway-half links that a packet
must pass through in moving from source node to
destination.
Internet Protocol A protocol used to provide
routing between different local networks in an
internetwork, as well as among nodes in the same
local network. The Internet Protocol corresponds to
layer 3, the network layer, of the OSI model. See also
IP address.
internet routing Internet routing involves all the
processes required to route a packet from a node on
one network to a destination node on another
network.
internetwork Two or more networks joined by
gateways, bridges, or routers.
intranet communication Communication that
occurs between nodes in a single network.
intranet hop count The number of intermediate
nodes that lie between a source and destination node
on the same point-to-point network.
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 System routine accessible by user
programs which 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 comprises 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 subnet mask See subnet mask.
ISO International Standards Organization. An
international federation of national standards
organizations involved in developing international
standards, including communication standards.
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 station address.
LANIC See Local Area Network Interface
Controller.
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.