Glossary
This glossary defines terms and abbreviations used in
this manual. It includes terms and definitions from the
IBM Dictionary of Computing (New York; McGraw-Hill,
Inc., 1994).
(A) Identifies definitions from the
American National
Standard Dictionary for Information Systems ANSI
X3.172-1990, copyright 1990 by the American
National Standards Institute (ANSI). Copies can be
purchased from the American National Standards
Institute, 1430 Broadway, New York, New York
10018.
(E) Identifies definitions from the
ANSI/EIA Standard -
440A: Fiber Optic Terminology, copyright 1989 by
the Electronics Industries Association (EIA). Copies
can be purchased from the Electronic Industries
Association, 2001 Pennsylvania Avenue N.W.,
Washington, DC 20006.
(I)
Identifies definitions from the
Information
Technology Vocabulary developed by
Subcommittee 1, Joint Technical Committee 1, of
the International Organization for Standardization
and the International Electrotechnical Commission
(ISO/IEC JTC1/SC1).
(T) Identifies definitions from draft international
standards, committee drafts, and working papers
being developed by ISO/IEC JTC1/SC1.
The following cross-references are used in this
glossary:
Contrast with
This refers to a term that has an opposed or
substantively different meaning.
See
This refers the reader to multiple-word terms in
which this term appears.
See also
This refers the reader to terms that have a related,
but not synonymous, meaning.
Synonym for
This indicates that the term has the same meaning
as a preferred term, which is defined in the
glossary.
If you do not find the term you are looking for, refer to
the index or to the
IBM Dictionary of Computing
A
ABR. Available bit rate.
ACR. Allowed cell rate.
active. (1) Able to communicate on the network. A
token-ring network adapter is active if it is able to
transmit and receive on the network. (2) Operational.
(3) Pertaining to a node or device that is connected or
is available for connection to another node or device.
(4) Currently transmitting or receiving.
adapter. In a LAN, within a communicating device, a
circuit card that, with its associated software and/or
microcode, enables the device to communicate over the
network.
address. (1) In data communication, the
IEEE-assigned unique code or the unique locally
administered code assigned to each device or
workstation connected to a network. (2) To refer to a
device or an item of data by its address (A).
Address Resolution Protocol (ARP). A protocol for
converting a higher level protocol address (for example,
an IP address) into a physical network address (for
example, an ATM address).
AFI. Authority and Format Identifier (1 byte) in an ATM
address.
AIX. Advanced Interactive Executive. The AIX
operating system is IBM’s implementation of the UNIX
operating system.
alert. (1) For IBM LAN management products, a
notification indicating a possible security violation, a
persistent error condition, or an interruption or potential
interruption in the flow of data around the network.
(2) In SNA, a record sent to a system problem
management focal point to communicate the existence
of an alert condition. (3) In the NetView for AIX
program, a high-priority event that warrants immediate
attention. This database record is generated for certain
event types that are defined by user-constructed filters.
allowed cell rate (ACR). An ABR service parameter.
ACR is the current rate, in cells/sec at which a source is
allowed to send data.
American National Standard Code for Information
Interchange (ASCII). The standard code, using a
coded character set consisting of 7-bit coded characters
(8 bits including parity check), used for information
interchange among data processing systems, data
Copyright IBM Corp. 1994, 1998
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