During a disaster recovery test, which condition could cause failover not to occur as expected?

During a disaster recovery test, which condition could cause failover not to occur as expected?

• A. HA monitoring is enabled on an interface of the secondary node that shows as ENABLED, DOWN.
• B. The Independent Network Configuration (INC) mode is enabled on the primary node.
• C. HA monitoring is enabled on a disabled interface of the primary node.
• D. HA heartbeats are only seen on some enabled interfaces of the secondary node.

Answer: (A)

Failover is driven by health checks and heartbeats exchanged over the HA interfaces. If you enable HA monitoring on a secondary node’s interface that is shown as ENABLED but is actually DOWN, the monitoring path intended to verify the secondary’s health is effectively broken. Since the interface is down, there’s no real heartbeat or health signal transmitted on that path, so the primary may not properly detect that the secondary is unreachable or unhealthy. This mismatch can prevent the failover from being triggered as expected during a disaster recovery test. Before testing DR behavior, ensure all HA-monitoring interfaces are actually UP and healthy.

Failover is driven by health checks and heartbeats exchanged over the HA interfaces. If you enable HA monitoring on a secondary node’s interface that is shown as ENABLED but is actually DOWN, the monitoring path intended to verify the secondary’s health is effectively broken. Since the interface is down, there’s no real heartbeat or health signal transmitted on that path, so the primary may not properly detect that the secondary is unreachable or unhealthy. This mismatch can prevent the failover from being triggered as expected during a disaster recovery test. Before testing DR behavior, ensure all HA-monitoring interfaces are actually UP and healthy.