Allied Telesis AT-8550 - Manual (Page 48)

Using the Simple Network Time Protocol
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NTP queries are first sent to the primary server. If the primary
server does not respond within 1 second, or if it is not
synchronized, the switch queries the secondary server (if one
is configured). If the switch cannot obtain the time, it restarts
the query process. Otherwise, the switch waits for the
sntp-
client update interval before querying again.
5. Optionally, the interval for which the SNTP client updates the real-
time clock of the switch can be changed using the following
command:
config sntp-client update-interval
The default sntp-client update-interval value is 64
seconds.
6. You can verify the configuration using the following commands:
show sntp-client
This command provides configuration and statistics associated with
SNTP and its connectivity to the NTP server.
show switch
This command indicates the GMT offset, Daylight Savings Time, and
the current local time.