After an engineer runs the utils ntp status command on the Cisco Unified Communications Manager publisher, the stratum value is 16
Which issue can the Cisco Unified CM cluster experience?
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A. B. C. D.B.
The stratum value in the output of the utils ntp status command on the Cisco Unified Communications Manager publisher indicates the stratum level of the NTP server that the publisher is currently synchronizing with. A stratum value of 16 indicates that the NTP server is unsynchronized or unreachable.
If the Cisco Unified CM cluster is unable to synchronize its time with an NTP server, the following issues may occur:
B. Database replication is not synchronized on the Unified CM nodes: The Cisco Unified CM cluster relies on accurate time synchronization to ensure database replication occurs between nodes. If the time on the publisher and subscriber nodes is not synchronized, the database replication can fail, causing the nodes to fall out of sync. This can result in issues such as configuration errors, device registration problems, and call processing issues.
D. The date/time group on all phones defaults to the time zone of the engineer: If the time on the Cisco Unified CM cluster is not synchronized with an NTP server, the date/time group on all phones may be incorrect, which can cause confusion for end-users and issues with call processing.
A. Unified CM sends an NTPv4 packet: The NTP protocol version used by Cisco Unified CM is NTPv4, regardless of the stratum value of the NTP server it is synchronizing with. Therefore, the stratum value of the NTP server does not affect the version of NTP packets sent by Unified CM.
C. The cluster loses access to port 124 at the firewall: The loss of access to port 124 at the firewall could prevent NTP traffic from passing between the Cisco Unified CM cluster and the NTP server, causing issues with time synchronization. However, this issue is not directly related to the stratum value reported by the utils ntp status command.
In summary, if the stratum value reported by the utils ntp status command on the Cisco Unified Communications Manager publisher is 16, the Cisco Unified CM cluster may experience issues with database replication and the date/time group on phones, which can impact call processing and end-user experience.