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.
Switch:1#show ntp statistics
NTP Server : 192.0.2.187
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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