Citrix ADC 13 Advanced Topics – Security, Management and Optimization — Question 69

Scenario: While performing a disaster recovery test, a Citrix Administrator decides to failover the Citrix ADC high availability (HA) pair appliances. The administrator notices that the failover is NOT working as expected, 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?

Answer options

• 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.

Correct answer: A

Explanation

The correct answer is A because if HA monitoring is enabled on an interface that is down, the secondary node cannot properly communicate with the primary, preventing it from taking over. Option B is incorrect as INC mode does not directly affect the failover mechanism. Option C is wrong because monitoring a disabled interface on the primary would not impact the secondary's ability to failover. Option D does not address the core issue of monitoring a down interface, which is crucial for successful failover.