3Com 3CRWE915075 - AirConnect 9150 11n 2.4 GHz PoE Access..., Руководство пользователя

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Service 49
The following settings can be configured.
To avoid using an invalid NTP server address, this device stores
the fetched/configured time. After it boots up, it uses the stored
time first and adjusts time if time is fetched.
SNTP client
enable/disable Click enable or disable.
If it is disabled, the user has to input time
manually.
If it is enabled, the device will try to fetch time
from configured SNTP servers.
Set Time Specify Year, Month, Day, Hour, and Minute.
These fields are grayed out and un-configurable if
SNTP is enabled.
Timezone selection This selection adjusts the time obtained from the
SNTP server.
Note: This selection does not affect manual time
input as they are considered to be input at the
same time.
Daylight Saving The start/end date of daylight saving changes
automatically based on the time zone selection.
Note: Start and End dates can be input manually,
to avoid any regional policy changes.
Primary and
Secondary SNTP
server/port setting If SNTP is enabled, this device will try to fetch
time from the Primary server first. The timeout for
Primary NTP server is 5 seconds.
If the Primary NTP server fails after 5 seconds the
Secondary NTP server will be tried for 5 seconds.
In the event that the Secondary server fails, the
device will wait for 60 seconds before trying the
Primary server again. This continues until a time is
available.