Using the Node Management Services (NMS) Utilities (32022-90053)
Glossary 299
Glossary
A
access port A special interface
card in the system cabinet
through which the system console
is connected.
address A numerical identifier
defined and used by a particular
protocol and associated software
to distinguish one node from
another.
address key See X.25 address
key.
address resolution In NS
networks, the mapping of node
names to IP addresses and the
mapping of IP addresses to
subnet addresses.
address resolution protocol
ARP. A protocol used by LAN
links with Ethernet enabled that
provides a means of exchanging
addressing information between
Ethernet nodes.
adjacent A node on a
point-to-point network that is
connected to another node by a
single link with no intervening
nodes.
ASCII American Standards
Committee on Information
Interchange. A standard used by
computers for interpreting binary
numbers as characters.
asynchronous Term used to
describe a device’s mode of
operation whereby a sequence of
operations are executed
irrespective of time coincidence
with any event. Devices that are
directly accessible by people (for
example, terminal keyboards)
operate in this manner.
attachment unit interface The
cable that runs between each
node (host, DTC, or other device)
and the Medium Attachment
Unit (MAU) that connects it to
the LAN in a ThickLAN
configuration.
AUI See attachment unit
interface.
autodial A dial link in which the
remote node’s telephone number
is automatically dialed by a
modem or other device with this
capability.
B
backbone LAN A thick LAN
cable conforming to the IEEE
802.3 Type 10 BASE 5 standard.
back-to-back configuration A
DTC configuration whereby MPE
users connected to one DTC can
communicate with a non-MPE/iX
system connected to another DTC
via the LAN. (See also local
switching)
backup configuration file A
file that contains a copy of the
information contained in the
configuration file.Thebackupfile,
calledNMCBACK.group.account
by default, is updated each time
the configuration file is
successfully validated.