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

99
Glossary
M
MAC (Media Access Control)
The Data Link layer in the ISO
model that describes how devices
share access to a network. Ethernet,
token-ring, and FDDI are MAC
layer specifications. Wiring hubs
deal primarily with MAC layer
equipment.
Manchester encoding A
signaling method by which clock
and data bit information can be
combined into a single, self-
synchronizable data stream. A
transition takes place in the middle
of each bit time. A low-to-high
transition represents a one; a high-
to-low transition represents a zero.
Mbps Megabits (1,048,576 bits)
per second.
MIB (Management Information
Base) A set of variables that
describe how data is stored,
monitored, and managed. MIB-I and
MIB-II are revisions of the database
used in a TCP/IP network. The
original MIB was renamed to MIB-I
when the MIB-II was defined.
MIC (Media Interface
Connector) An optical fiber
connector pair that links the fiber
media to the FDDI node or another
cable. The MIC consists of two
halves. The MIC plug terminates an
optical fiber cable. The MIC
receptacle is associated with the
FDDI node.
multicast A technique that allows
copies of a single packet or cell to be
passed to a selected subset of all
possible destinations.
multimode A large-core (62.5
micron) optical fiber through which
multiple modes will propagate.
N
network An interconnection of
multiple stations or systems that are
able to send messages to or receive
messages from one another.
Network layer Layer 3 in the OSI
model; permits communications
between network nodes in an open
network.
NIF (Neighborhood
Information Frame) Special
frames used by the SMT Frame
Services within the Station