300-430 Question 177
Single answerA network administrator has deployed Cisco CMX (Connected Mobile Experiences) in a high-availability configuration with two nodes: one as the primary and the other as the secondary. The administrator notices that the secondary CMX node remains in 'standby' status, even though the primary node is offline due to a hardware failure. What is the most likely cause of this issue?
- A
The secondary CMX node has not been properly synchronized with the primary node.
- B
The secondary CMX node is not licensed to operate as an active node.
- C
There is a network connectivity issue between the secondary CMX node and the wireless controllers.
- D
The database replication process between the primary and secondary nodes has failed.
Show answer and explanation
Correct answer: A
Explanation
In a Cisco CMX high-availability setup, the secondary node must be properly synchronized with the primary node to ensure it can seamlessly take over operations if the primary node fails. Lack of synchronization prevents the secondary node from having the necessary data and configuration to promote itself to an active state, leaving it in standby mode.
- A. Correct.
If the secondary CMX node has not been synchronized with the primary node, it will not have the necessary configuration and data to take over when the primary node fails, causing it to remain in standby mode.
- B. Incorrect.
Licensing in Cisco CMX does not determine whether a secondary node can become active; it is unrelated to high-availability operations.
- C. Incorrect.
A network connectivity issue between the secondary CMX node and the wireless controllers would impact client tracking and analytics, but it would not prevent the secondary node from becoming active if the primary node fails.
- D. Incorrect.
While database replication issues can cause data inconsistencies, they do not directly affect the secondary node's ability to transition to active mode in case of a primary node failure.