How to set up NTP server to synchronize time on CAS platform and how to make time synchronization take effect immediately?

How to set up NTP server to synchronize time on CAS platform and how to make time synchronization take effect immediately?

The synchronization completion time of NTP is mainly composed of two parts. The first part is when to start sending the first synchronization message after the configuration of synchronization, i.e., the synchronization period, which is a random number calculated by the ntp protocol itself. minpoll and maxpoll :specify the interval of the query in the form of a power of 2. The default value of both minpoll and maxpoll is 6, i.e. 6 times 2 = 64 seconds; the second part is the time occupied by the interaction of messages after the synchronization is initiated, but this part of time is very short and can be ignored. So it is not possible to make the time synchronization take effect immediately, and it is necessary to wait for a random time after the configuration before the first synchronization is initiated. For this reason, this need is generally recommended at the opening to manually modify the time to achieve, in addition, if not the official License, modify the time must be a problem!