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10-2
C
10: FDDI N
HAPTER
FDDI Network
Topologies
ETWORKS
The term network topology refers to the ways that stations are
interconnected within a network. An FDDI network topology may be
viewed at two distinct levels:
Physical topology — A network's physical topology is defined by the
arrangement and interconnection of its nodes. The FDDI physical topology
is a ring of trees. See Figure 10-1.
Ring of Trees
Figure 10-1 Physical Topology
Logical topology — A network's logical topology is defined by the paths
through which tokens and data flow in the network. The FDDI logical
topology is a dual ring. See Figure 10-2.
Secondary ring
Dual ring
Figure 10-2 Logical Topology
Nodes
Nodes
Primary ring
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