Use the show ntp statistics command to view the output for each NTP stratum regardless of whether authentication is enabled.
If two host names resolve to the same IP address, only the first one displays in the output for the show ntp statistics command.
enable
show ntp statistics
Switch:1#show ntp statistics NTP Server : 192.0.2.187 ------------------------------------------ Stratum : 16 Version : NTPv4 Broadcast : No Auth Enabled : Disabled Auth Status : Not-Auth Sync Status : Rejected Reachability : Unreachable Root Delay : 0.000 Root Disp : 0.000 Delay : 0.000 Dispersion : 15937.500 Offset : 0.000 Precision : -23 Jitter : 0.000 Last Event : Mobilize NTP Server : 192.0.2.201 ------------------------------------------ Stratum : 4 Version : NTPv4 Broadcast : No Auth Enabled : Enabled Auth Status : Ok Sync Status : Candidate Reachability : Reachable Root Delay : 18.448 Root Disp : 128.677 Delay : 18.448 Dispersion : 0.366 Offset : 0.202 Precision : -24 Jitter : 1.041 Last Event : Popcorn