NTP Configuration and Behavior – Support Document
Overview
Network Time Protocol (NTP) is used by the device to synchronize its system time with a remote time server.
Correct time synchronization is critical for:
Event logging accuracy
Cloud communication
Certificate validation
Troubleshooting and monitoring
Scheduled operations
How to Configure NTP
Go to Configuration → NTP
Select Enable
Enter the NTP Server URL
Example: time.google.com
Press Enter after adding the URL
Click Update Configuration
Important Points
Device must have internet connectivity to reach NTP server
Multiple NTP servers can be added for redundancy
After configuration change, device must be rebboted take new NTP config
NTP Logging Behavior
Once NTP configuration is applied, logs can be verified under:
Monitor → Events Logging
Typical log message:
New Config Applied
NTP Fallback Behavior (Very Important)
If a wrong / unreachable NTP server is configured and the device is rebooted, the device will automatically fallback to the default NTP server.
Default Fallback Server:
time.google.com
This automatic fallback ensures:
Device time remains synchronized
Event logs continue to show correct timestamps
Cloud heartbeat and communication are not impacted
System stability is maintained
How to Verify Fallback
Go to Events Logging
You will see log entry similar to:
Setting NTP servers to time.google.com
This confirms that:
Configured NTP server was invalid or unreachable
Device reverted to default Google NTP after reboot
Troubleshooting NTP Issues
If time is not syncing:
Check WAN / internet connectivity
Verify DNS resolution
Confirm NTP server is reachable
Reboot device after correcting NTP
Check firewall blocking UDP port 123
Best Practice Recommendation
Always configure valid public NTP servers
Prefer adding 2–3 NTP servers
Avoid leaving incorrect NTP entries
Verify logs after every configuration change
Example Recommended NTP Servers
time.google.com
pool.ntp.org
time.cloudflare.com
Conclusion
Proper NTP configuration is essential for device health, monitoring accuracy, and cloud stability.
The built-in fallback mechanism ensures operational continuity even if incorrect NTP settings are applied.