ZyXEL Communications NWA5121-N, User Manual

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Chapter 12 System
NWA5000 / WAC6500 Series User’s Guide
128
12.3.1 Pre-defined NTP Time Servers List
When you turn on the NWA/WAC for the first time, the date and time start at 2003-01-01
00:00:00. The NWA/WAC then attempts to synchronize with one of the following pre-defined list of
Network Time Protocol (NTP) time servers.
The NWA/WAC continues to use the following pre-defined list of NTP time servers if you do not
specify a time server or it cannot synchronize with the time server you specified.
When the NWA/WAC uses the pre-defined list of NTP time servers, it randomly selects one server
and tries to synchronize with it. If the synchronization fails, then the NWA/WAC 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 servers have been tried.
12.3.2 Time Server Synchronization
Click the Sync. Now button to get the time and date from the time server you specified in the
Time Server Address field.
When the Loading message appears, you may have to wait up to one minute.
Figure 75
Loading
End Date Configure the day and time when Daylight Saving Time ends if you selected Enable
Daylight Saving . The at field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time ends in the United States on the first Sunday of November. Each
time zone in the United States stops using Daylight Saving Time at 2 A.M. local time. So
in the United States you would select
First , Sunday , November and type 2 in the at
field.
Daylight Saving Time ends in the European Union on the last Sunday of October. All of
the time zones in the European Union stop using Daylight Saving Time at the same
moment (1 A.M. GMT or UTC). So in the European Union you would select
Last ,
Sunday , October . The time you type in the at field depends on your time zone. In
Germany for instance, you would type 2 because Germany's time zone is one hour
ahead of GMT or UTC (GMT+1).
Offset Specify how much the clock changes when daylight saving begins and ends.
Enter a number from 1 to 5.5 (by 0.5 increments).
For example, if you set this field to 3.5, a log occurred at 6 P.M. in local official time will
appear as if it had occurred at 10:30 P.M.
Apply Click Apply to save your changes back to the NWA/WAC.
Reset Click Reset to return the screen to its last-saved settings.
Table 64
Configuration > System > Date/Time (continued)
LABEL DESCRIPTION
Table 65
Default Time Servers
0.pool.ntp.org
1.pool.ntp.org
2.pool.ntp.org