3Com 3C780 - LinkBuilder FDDI Base Unit User Manual page 164

Dual ring of trees
FDDI
Fiber-optic cable
Gateway
IP
ISO
Logical ring
One of the FDDI-supported topologies in which only one ring
is permitted to have multiple trees of any depth (consisting of
single-attached concentrators and stations), which are cascaded
off the main ring.
Fiber Distributed Data Interface. The local area networking
standard that provides high bandwidth for interconnecting
computers and peripheral devices using a fiber-optic medium
in a ring configuration.
The FDDI specification is made up of standards that
correspond to the IEEE OSI model layers (on the physical and
data link levels). These standards specify the physical
interfaces, functions, and operations needed to support
interoperability between devices.
A fiber-optic cable consists of a glass center, cladding, a buffer
layer, strength members, and a cable sheath. The glass center
supports the transmission of light signals.
A special-purpose, dedicated computer that attaches to two or
more networks and routes packets from one to another.
Internet protocol, which defines the Internet datagram as the
unit of information passed across the Internet and provides the
basis for the Internet connectionless, best-effort packet
delivery service.
International Standards Organization. The international
agency that develops information-exchange standards
implementation.
A set of MACs serially connected to form a single ring. A
fault-free FDDI network provides two logical rings.
Glossary
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