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2 - 30 ONline Ethernet 10BASE-FL Installation and Operation Guide
Figure 2-10. Redundant Fiber Backbone Configuration
Note: Always enable redundancy in the lower level concentrators
(those connecting to the central concentrators in the
star-wired topology).
The primary port passes data. The backup port does not pass any data in
either direction, but the link is monitored for any failures (the Port Status
LED indicates any problems).
Redundancy
Enabled
Redundancy
Enabled
Pri mar y
10BASE-FL
Link
Backup
10BASE-FL
Link
Primary Backup
Redundancy Disabled
(Remote Failure Signaling
enabled for port 4 on each
10BASE-FL Module)