300-070 · Question #347
Which statement describes what happens when a failed primary Cisco Unified Communications Manager comes back into service?
The correct answer is A. Devices in that group automatically reregister with the primary Cisco Unified CM. CUCM is designed with automatic failback behavior. When a primary CUCM server fails, registered devices fail over to the next available server in their device pool's CUCM group. When the primary server returns to service, the devices automatically re-register back to it without…
Question
Which statement describes what happens when a failed primary Cisco Unified Communications Manager comes back into service?
Options
- ADevices in that group automatically reregister with the primary Cisco Unified CM.
- BThe group automatically re-elects a new primary Cisco Unified CM when it is out of service, and it
- CThe primary Cisco Unified CM must be added manually back to the group.
- DA new temporary region is created automatically to avoid conflicts until database resynchronizatio
How the community answered
(35 responses)- A86% (30)
- B6% (2)
- D9% (3)
Explanation
CUCM is designed with automatic failback behavior. When a primary CUCM server fails, registered devices fail over to the next available server in their device pool's CUCM group. When the primary server returns to service, the devices automatically re-register back to it without any manual intervention (option A). This automatic re-registration is a built-in feature of the CUCM Survivable Remote Site Telephony (SRST) and redundancy architecture. No manual re-addition to the group is needed (option C), no new region is created (option D), and there is no permanent re-election of a new primary (option B).
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