135
Follow these steps to configure the system clock:
To do… Use the command…
Remarks
Set time and date clock datetime time date
Optional
Available in user view.
Enter system view system-view —
Set the time zone
clock timezone zone-name { add |
minus } zone-offset
Optional
Universal time coordinated (UTC)
time zone by default.
Set a
daylight
saving
time
scheme
Adopt daylight
saving time from the
start-time on the
start-date to the
end-time on the
end-date. Daylight
saving time adds the
add-time to the
standard time of the
device.
clock summer-time zone-name
one-off start-time start-date
end-time end-date add-time
Optional
Use either command
By default, daylight saving time is
not configured on the device, and
the UTC time zone is applied.
Adopt daylight
saving time
repeatedly
clock summer-time zone-name
repeating start-time start-date
end-time end-date add-time
Displaying the system clock
The system clock is determined by the commands clock datetime, clock timezone and clock summer-time.
If these three commands are not configured, the display clock command displays the original system
clock. If you combine these three commands in different ways, the system clock is displayed in the ways
as shown in 0. T
he following describes the meanings of the parameters in the configuration column:
• 1 indicates date-time has been configured with the clock datetime command.
• 2 indicates time-zone has been configured with the clock timezone command and the offset time is
zone-offset.
• 3 indicates daylight saving time has been configured with the clock summer-time command and
the offset time is summer-offset.
• [1] indicates the clock datetime command is an optional configuration.
• The default system clock is 2005/1/1 1:00:00 in the example.
Table 12 System clock configuration
Confi
uration S
stem clock confi
ured
Exam
le
1 date-time
Configure: clock datetime 1:00
2007/1/1
System clock configured: 01:00:00 UTC
Mon 01/01/2007
2
The original system clock ±
"zone-offset"
Configure: clock timezone zone-time
add 1
System clock configured:: 02:00:00
zone-time Sat 01/01/2005