Chapter 27 Maintenance

27.5 Pre-defined NTP Time Server Pools

When you turn on the ZyWALL for the first time, the date and time start at 2000-01-01 00:00:00. The ZyWALL 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 ZyWALL 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 ZyWALL can use the NTP time server pools regardless of the time protocol you select.

When the ZyWALL 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 ZyWALL 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.

27.5.1Resetting the Time

The ZyWALL resets the time in the following instances:

•When you click Synchronize Now.

•On saving your changes.

•When the ZyWALL starts up.

•24-hour intervals after starting.

27.5.2Time 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 312 Synchronization in Process

Click the Return button to go back to the Time and Date screen after the time and date is updated successfully.

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ZyWALL 2WG User’s Guide