Specifications

Chapter 1: An Overview of the BlueSecure Controller
1-12
Within either single- or multiple-BSC networks, you can set up pairs of redundant BSCs
(must be the same model) to achieve fault tolerance as shown in Figure 1-8. Within a
failover configuration, the primary BSC is active and the secondary BSC is idle.
Failover is initiated when the primary and secondary BSCs are unable to contact each
other via the failover port. Typically, this is due to a failure of the primary BSC.
Disconnecting the managed or protected interface cable will cause a failover.
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Note: When failover occurs, users with an IPSec connection will need to restart their
tunnel. However, network availability is maintained during failover.
When the secondary BSC takes over, its role changes and it functions as the primary. If
the original primary recovers (see figure below), it becomes the secondary. Therefore, no
manual intervention is needed to “reset” roles when the original primary BSC recovers.
BSC mounting and network connection procedures are provided in Chapter 2,
"Installation." After completing the physical connections, follow the single BSC network
configuration instructions given in “Single BSC Configuration” on page 1-10 (the failover
BSC configuration procedure is identical to that described for single-BSC networks).
No software configuration of the secondary BSC is required; any changes in software
settings are automatically propagated to the secondary BSC from the primary BSC.
Figure 1-9: Failover within a BSC Pair
Figure 1-10: Recovery of the Failed BSC
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