H3C SOHO IE4300, Справочник по командам

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6
clock protocol
Use
clock protocol
to specify the system time source.
Use
undo clock protocol
to restore the default.
Syntax
clock protocol { none | ntp }
undo clock protocol
Default
The device obtains the UTC time from an NTP time source.
Views
System view
Predefined user roles
network-admin
Parameters
none
: Uses the system time set by using the
clock datetime
command.
ntp : Uses NTP to obtain the UTC time. You must configure NTP correctly. For more information
about NTP and NTP configuration, see Network Management and Monitoring Configuration Guide .
Usage guidelines
Correct system time is essential to network management and communication. You must configure
the system time correctly before you run the device on the network.
The device can use the locally set system time, or obtain the UTC time from a time source on the
network and calculate the system time.
If you execute the
clock protocol none
command, the device uses the locally set system time.
The device then uses the clock signals generated by its built-in crystal oscillator to maintain the
system time.
If you execute the
clock protocol ntp
command, the device obtains the UTC time through NTP
and calculates the system time. The device then periodically synchronizes the UTC time and
recalculates the system time.
If you execute this command multiple times, the most recent configuration takes effect.
Examples
# Configure the device to use the local UTC time.
<Sysname> system-view
[Sysname] clock protocol none
clock summer-time
Use
clock summer-time
to set the daylight saving time.
Use undo clock summer-time to restore the default.
Syntax
clock summer-time name start-time start-date end-time end-date add-time
undo clock summer-time