ZyXEL Communications NBG410W3G - Manual (Page 330)

Chapter 20 Maintenance
NBG410W3G Series User’s Guide
330
20.5 Pre-defined NTP Time Server Pools
When you turn on the ZyXEL Device for the first time, the date and time start at 2000-01-01
00:00:00. The ZyXEL Device then attempts to synchronize with an NTP time server from one
of the 0.pool.ntp.org, 1.pool.ntp.org or 2.pool.ntp.org NTP time server pools. These are virtual
clusters of time servers that use a round robin method to provide different NTP servers to
clients.
The ZyXEL Device continues to use the NTP time server pools if you do not specify a time
server or it cannot synchronize with the time server you specified.
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The ZyXEL Device can use the NTP time server pools regardless of the time
protocol you select.
When the ZyXEL Device uses the NTP time server pools, it randomly selects one pool and
tries to synchronize with a server in it. If the synchronization fails, then the ZyXEL Device
goes through the rest of the list in order from the first one tried until either it is successful or all
the pre-defined NTP time server pools have been tried.
20.5.1 Resetting the Time
The ZyXEL Device resets the time in the following instances:
• When you click Synchronize Now .
• On saving your changes.
• When the ZyXEL Device starts up.
• 24-hour intervals after starting.
20.5.2 Time Server Synchronization
Click the Synchronize Now button to get the time and date from the predefined time server or
the time server you specified in the Time Server Address field.
When the System Time and Date Synchronization in Process screen appears, wait up to one
minute.
Figure 197 Synchronization in Process
Click the Return button to go back to the Time and Date screen after the time and date is
updated successfully.