Firepower 2100 is out-of-sync

[teamdv6199]

I have a fire power 2100. On both the FMC and FTD i get 

Time Synchronization Status May 2, 2024 7:33 AM FC  is out-of-sync. I have synced the FMC by using ntpdate -u 192.168.0.100. The FTD looks like its the problem since it says unknown. Does anyone know how to sync both of them?

show ntp
NTP Server : 
Status : Unknown
Offset : +0.000 (milliseconds)
Last Update : - (seconds)

NTP Server : 127.127.1.1
Status : Being Used
Offset : +0.000 (milliseconds)
Last Update : 18 (seconds)

[Marvin Rhoads]

FMC should be changed in the GUI under the system configuration menu. That will make its configured ntp server persistent.

Similarly an FMC-managed FTD's ntp server is set under Device Platform Settings. It's recommended to use an NTP server (not FMC) for that case.

Note for other readers, 4100/4200 and 9300 series' ntp server is set in the chassis manager.

[teamdv6199]

The NTP server is already set in the gui though. 

[MHM Cisco World]

I think the FPR2000 is non-FXOS (non full functional fxos)