Redundancy group failover is triggered by the results from monitoring the health of interfaces that belong to the redundancy group. When you assign a weight to an interface to be monitored, the system monitors the interface for availability. If a physical interface fails, the weight is deducted from the corresponding redundancy group's threshold. Every redundancy group has a threshold of 255. If the threshold hits 0, a failover is triggered. Failover is triggered even if the redundancy group is in manual failover mode and preempt is not enabled.
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