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4.2 REDUNDANT MEDIA TRANSMISSION
Most TIWAY I conformant devices support a redundant media scheme which
provides active access to a device over one of two independent media channels.
Should access to a device fail on one channel, communications can be
automatically or manually switched to the alternate channel. This type of a
circuit is illustrated in Figure 4–5. Examples of the software commands are
given in Chapter 2.
UNILINK HOST ADAPTER
USER MANUAL
THE TIWAY I NETWORK PORTS
UNILINK
Figure 4–5 Redundant Media Circuit
Redundant media is provided to improve a network's
mission reliability. However, the adapter cannot use
the dual media ports to access two independent
networks.
Secondary Bus
(alternate trunk)
Bus
(main trunk)
Drop Cables
NOTE
4-8
Up to 254
Secondaries
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