IBM 8239 Token-Ring Stackable Hub, Setup And User Manual

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Glossary
This glossary includes terms and definitions from:
¹
The American National Standard Dictionary for
Information Systems, ANSI X3.172-1990, copyright
1990 by the American National Standards Institute
(ANSI). Copies may be purchased from the
American National Standards Institute, 11 West
42nd Street, New York, New York 10036.
Definitions are identified by the symbol (A) after the
definition.
¹
The ANSI/EIA Standard—440-A, Fiber Optic
Terminology Copies may be purchased from the
Electronic Industries Association, 2001
Pennsylvania Avenue, N.W., Washington, DC
20006. Definitions are identified by the symbol (E)
after the definition.
¹
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). Definitions of published parts
of this vocabulary are identified by the symbol (I)
after the definition; definitions taken from draft
international standards, committee drafts, and
working papers being developed by ISO/IEC
JTC1/SC1 are identified by the symbol (T) after the
definition, indicating that final agreement has not yet
been reached among the participating National
Bodies of SC1.
¹
The IBM Dictionary of Computing, New York:
McGraw-Hill, 1994.
¹
Internet Request for Comments: 1208, Glossary of
Networking Terms
¹
Internet Request for Comments: 1392, Internet
Users' Glossary
¹
The
Object-Oriented Interface Design: IBM
Common User Access Guidelines, Carmel, Indiana:
Que, 1992.
The following cross-references are used in this
glossary:
Contrast with: This refers to a term that has an
opposed or substantively different meaning.
Synonym for: This indicates that the term has the
same meaning as a preferred term, which is defined in
its proper place in the glossary.
Synonymous with: This is a backward reference from
a defined term to all other terms that have the same
meaning.
See: This refers the reader to multiple-word terms that
have the same last word.
See also: This refers the reader to terms that have a
related, but not synonymous, meaning.
A
address. In data communication, the unique code
assigned to each device, workstation, or user connected
to a network.
address mask. For internet subnetworking, a 32-bit
mask used to identify the subnetwork address bits in
the host portion of an IP address. Synonymous with
subnet mask and subnetwork mask.
address resolution. A method for mapping network
layer addresses onto media-specific addresses. See
also
Address Resolution Protocol (ARP).
Address Resolution Protocol (ARP). In the internet
suite of protocols, the protocol that dynamically maps
an IP address to an address used by a supporting LAN,
such as Ethernet or token ring.
alert. A message sent to a management services focal
point in a network to identify a problem or an impending
problem.
American National Standards Institute (ANSI). An
organization consisting of producers, consumers, and
general interest groups, that establishes the procedures
by which accredited organizations create and maintain
voluntary industry standards in the United States. (A)
ARP. Address Resolution Protocol.
ARP cache. A local cache used to translate IP
addresses into physical addresses.
B
beacon. A frame sent by an adapter indicating a
serious ring problem, such as a broken cable.
beacon recovery. A mechanism used to identify and
isolate the sources of hard errors on a token-ring
network
bootstrap. (1) A sequence of instructions whose
execution causes additional instructions to be loaded
and executed until the complete computer program is in
storage. (T) (2) A technique or device designed to
bring itself into a desired state by means of its own
action, for example, a machine routine whose first few

Copyright IBM Corp. 1998
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