OSD NETWORKS OSD2258EP Operator's Manual page 30

FLOAT BACKUP ENABLE <fbe>
No: 1 – Lists number of units connected (in this case 1)
MAC_ADDRESS:– Displaying all the MAC addresses of the units connected on the ring/bus
FLOAT_BACKUP: Enable – Displays all the units connected to the ring/bus having Float
Backup enabled.
SETTING_RESULT: OK – Displays the Float Backup enable has been successfully
implemented.
<-local: This points to the unit that the USB cable is plugged into on the ring/bus.
The link furthest from the Master unit in a ring configuration is automatically selected as the
backup branch. In the case of even units on a ring the fiber link on port 9 will always be the
backup branch – indicated by a dashed line on a ring topology.
Active
Branch
Back-
up
Branch
In Figure 27, node 1 will communicate with node 2, node 3 and node 4 via node 3. Node 2 will
communicate to node 4 only via node 1 and 3.
In the event of a fiber link being broken or disconnected (indicated by a cross) the backup
branch will become the active branch. If the link between node 1 and 3 is broken (see Figure
28), node 1 will communicate with node 3 via node 2 and node 4.
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FIGURE 26: FLOAT BACKUP ENABLED 1
1
2 3
4
FIGURE 27: RING TOPOLOGY
OSD2258EP Operator Manual
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5
2
3 4
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