Installing and Administering HP EISA FDDI/9000 and HP HSC FDDI/9000

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Glossary
4B/5B The physical layer (PHY)
coding scheme for FDDI.
802.1 IEEE A set of standards for
governing the OSI Data Link layer
and the OSI physical layer. For
example, 802.1d is the standard for
bridging between the LAN
standards
802.2 IEEE Standards that govern
the Logical Link Control (LLC)
within the Data Link layer of the
OSI model. LLC frames carry user
infobetween two stations. These
standards are common across the
various lower level standards within
the Data Link and the Physical
layers.
A
adapter A device, usually in the
form of a user interface card, that
physically connects an endstation to
the network medium; for example,
twisted pair, coaxial, fiber.
ANSI (American National
Standards Institute)
Organization which coordinates,
develops, and publishes standards
used in the United States.
Application layer The seventh
layer in the OSI model for data
communications. It defines protocols
for user or application programs.
ARP (Address Resolution
Protocol) A TCP/IP protocol used
to dynamically translate the IP
address of a network host to its LAN
hardware (MAC) address. This
action is limited to LANs that
support hardware broadcasts.
Assert A signal is asserted by
driving it to a logical true state.
For positive-true signals this state
is high logic voltage, and for
negative-true signals this state is
the low logic voltage.
attenuation Signal power lost in a
transmission medium as the signal
travels from sender to receiver.
B
backbone A network
configuration that connects LANs
into an integrated network.
bandwidth Bandwidth typically
indicates the data transmission
capacity of a network through a
given circuit. Generally, the greater