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Local Area Networks
Gerd Keiser
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Chapter Six
Token-Passing LANs
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Four basic steps in
the operation of a
token ring
Figure 6.1
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Frame structures used by IEEE-802.5
Figure 6.2
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Formats of fields in
an IEEE-802.5 frame
Figure 6.3
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Illustration of differential Manchester encoding
Figure 6.4
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Basic closed-loop configuration for token rings
Figure 6.5
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Example of
stations connected
via a wiring center
Figure 6.6
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A series of MAUs can be connected into a large ring
Figure 6.7
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Example of the bypass technique in a loop
Figure 6.8
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Example of the self-healing technique in a loop
Figure 6.9
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Timing diagrams for a <
Tm and a > Tm
Figure 6.10
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Concept of a Dedicated Token Ring (DTR) architecture
Figure 6.11
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FDDI consists of dual self-healing counter-rotating rings
Figure 6.12
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The four FDDI standards and their functions
Figure 6.13
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Data and token frame formats of FDDI
Figure 6.14
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