Pre-Defined Ntp Time Server Pools; Resetting The Time; Time Server Synchronization; Figure 197 Synchronization In Process - ZyXEL Communications NBG410W3G User Manual

Chapter 20 Maintenance

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.
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
• 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.
330
.
Synchronize Now
NBG410W3G Series User's Guide