Scenario: A Citrix Administrator is performing a disaster recovery test and decided to fail over the Citrix ADC high availability (HA) pair appliances. The administrator noticed that the failover is NOT working as expected in item text, and the Secondary Citrix ADC is NOT taking over as Primary. The administrator suspects that networking issues may be causing the failure.
What could be the cause of this issue with the Citrix ADCs?
A. HA monitoring is enabled on a disabled interface of the Primary Node.
B. The Independent network configuration (INC) mode is enabled on the Primary Node.
C. HA heartbeats are only seen on some enabled interfaces of the Secondary Node.
D. HA monitoring is enabled on an interface of the Secondary Node that shows as ENABLED, DOWN.
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If any interface has a line containing “ENABLED, down, …,MONITOR ON, …” the system
will never become primary. Usually it will stay as secondary with undefined primary.
Reference https://docs.citrix.com/en-us/citrix-adc/current-release/getting-started-with-citrix-adc/configure-ha-first-time.html
Disable high availability monitoring for unused interfaces
The high availability monitor is a virtual entity that monitors an interface. You must disable the monitor for interfaces that are not connected or being used for traffic. When the monitor is enabled on an interface whose status is DOWN, the state of the node becomes NOT UP. In a high availability configuration, a primary node entering a NOT UP state might cause a high availability failover. An interface is marked DOWN under the following conditions:
The interface is not connected
The interface is not working properly
The cable connecting the interface is not working properly
Agree with D.
Its D