Configuring Systems for Terminals, Printers, and Other Serial Devices (32022-90057)

Glossary
HP PPN
Glossary
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HP PPN Hewlett-Packard Private Packet Network.
Hewlett-Packard’s own packet- switching X.25
network, which gives users full control over the
administration and security of their data
communication.
HP TS8 A terminal server that can support up to
eight asynchronous serial connections. When used in
back-to-back configuration, users can access HP
e3000 MPE/V systems on it through a DTC.
I
idle device timeout A timeout defined by the
Configure: CPU command. When the timer lapses, a
device connected to the DTC user interface that is
still inactive will be disconnected.
IEEE 802.3 A standard for a broadcast local area
network published by the Institute for Electrical and
Electronics Engineers (IEEE). This standard is used
for both the ThinLAN and ThickLAN
implementations of the LAN.
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 IEEE 802.3
LAN.
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.
INP Intelligent Network Processor. The card
residing in the back of an MPE V-based node that
provides a point-to-point or X.25 interface.
interactive communications Processing that
allows users to enter commands and data at the
terminal and receive an immediate response.
Interactive processing occurs in session mode on
MPE/iX systems.
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.
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 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.