3Com 3CB9E7 - CoreBuilder 9000 Chassis Switch Getting Started Manual page 123

MIB
Management Information Base. A database of
network management information that describes the
specifics of individual network components.
MLAN
High speed management busses that provide
intermodule communication and network and
network connectivity to the SMC (System
Management Component).
MMF
Multi-mode fiber. An optical fiber with a core
diameter of from 50 to 100 microns. It is the most
commonly used optical fiber for short distances such
as LANs. Light can enter the core at different angles,
making it easier to connect the light source. However,
light rays bounce around within the core causing
some distortion and providing less bandwidth than
singlemode fiber.
modem
Modulator/demodulator. The device that converts
serial digital data from a transmitting terminal to a
signal suitable for transmission over a telephone
(analog) channel. At the other end, another modem
converts the analog signal to digital data for use by
the computers. A modem port provides the interface
for remote management of CoreBuilder
external modem can be connected to the serial port
of the system processor.
multicast
multiplexing
Network-to-Network Interface (NNI)
non-fault tolerant mode
OSPF
out-of-band
®
systems. An
A special form of broadcast where copies of the
packet are delivered only to a subset of all possible
destinations.
A function within a layer that interleaves the
information from multiple connections into one
connection.
The interface between two network nodes.
When a device cannot reserve the power of a single
power supply to act as backup if one of the other
power supplies fails.
Open Shortest Path First. Interior Gateway Protocol
for TCP/IP networks; uses the Dijkstra algorithm, a
link-state routing algorithm that calculates routes for
packets based on a number of factors, including least
hops, speed of transmission lines, and congestion
delays.
Transmission of auxiliary information, for example,
management messages, over a medium other than
that used by the system users.
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LOSSARY