NS3000/iX NMMGR Screens Reference Manual - Edition 8 (36922-90038)
336 Glossary
Glossary
on this workstation is called the
OpenView DTC Manager
software.
OSI model Open Systems
Interconnectionmodel. A model of
network architecture devised by
the International Standards
Organization (ISO). The OSI
model defines seven layers of a
network architecture with each
layer performing specified
functions.
P
packet A block of data whose
maximum length is fixed. The
unit of information exchanged by
X.25 at Level 3. The types of
packets are DATA packets and
various control packets. A packet
type is identified by the encoding
of its header.
packet exchange protocol
PXP. A transport layer protocol
used in NS 3000/iX links to
initially establish communication
between nodes when NetIPC
socket registry is used.
packet-switched network
name The name of a data
communication network adhering
to the CCITT X.25
recommendation. This can be a
PDN or a private network such as
the HP PPN.
PAD (Packet
Assembler/Disassembler A
device that converts
asynchronous character streams
into packets that can be
transmitted over a packet
switching network (PSN).
PAD name A name of up to eight
characters that is associated with
a configured PAD device. The
PAD name is known to both the
DTC and the host systems that
the device can access.
PAD profile A terminal or
printer profile that specifies the
configuration characteristics for
PAD-connected devices.
partner gateway half When
gateway halves are used, two
gateway halves are required in
order to provide communication
between two networks. Each is
the partner of the other.
path name When configuring
with NMMGR, you can type a
string in the COMMAND: field on a
screen to branch to another
screen. Each screen has a unique
path name that corresponds to its
location in the hierarchy of
configuration screens presented
by NMMGR.
PDN Public data network. Adata
communication network whose
services are available to any user
willing to pay for them. Most
PDNs use packet switching
techniques.
point-to-point A link that
connects either two nodes in a NS
Point-to-Point 3000/iX network or
two gateway halves.