The Palo Alto Networks firewall can be configured to use specified Network Time Protocol (NTP) servers. For synchronization with the NTP server(s), NTP uses a minimum polling value of 64 seconds and a maximum polling value of 1024 seconds. These minimum and maximum polling values are not configurable on the firewall.
Once the Palo Alto Networks device goes through the initial synchronization process and synchronizes the system clock, it will poll the NTP server within the default minimum and maximum range.
For more information on NTP server polling and the determination of the polling interval, visit www.ntp.org.
To manually restart the NTP process, use the following CLI command:
> debug software restart ntp
To view whether the NTP process has a new PID, execute:
> show system software status | match ntp
Process ntp running (pid: 2216)
To verify NTP state, use the show ntp CLI command as in the following examples: