H3C Technologies H3C S5120 Series Switches - Manual (Page 630)

1-3
Displaying the system clock
The system clock is decided 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 shown in Table 1-1 . The meanings of the parameters in the configuration column
are as follows:
z 1 indicates date-time has been configured with the clock datetime.
z 2 indicates time-zone has been configured with the clock timezone command and the offset time
is zone-offset.
z 3 indicates daylight saving time has been configured with the clock summer-time command and
the offset time is summer-offset.
z [1] indicates the clock datetime command is an optional configuration.
z The default system clock is 2005/1/1 1:00:00 in the example.
Table 1-1 Relationship between the configuration and display of the system clock
Configuration
System clock displayed by
the display clock command
Example
1 date-time
Configure: clock datetime 1:00
2007/1/1
Display: 01:00:00 UTC Mon
01/01/2007
2
The original system clock ±
zone-offset
Configure: clock timezone
zone-time add 1
Display: 02:00:00 zone-time
Sat 01/01/2005
1 and 2 date-time ± zone-offset
Configure: clock datetime 2:00
2007/2/2 and clock timezone
zone-time add 1
Display: 03:00:00 zone-time Fri
02/02/2007
[1], 2 and 1 date-time
Configure: clock timezone
zone-time add 1 and clock
datetime 3:00 2007/3/3
Display: 03:00:00 zone-time
Sat 03/03/2007
If the original system clock is
not in the daylight saving time
range, the original system clock
is displayed.
Configure: clock summer-time
ss one-off 1:00 2006/1/1 1:00
2006/8/8 2
Display: 01:00:00 UTC Sat
01/01/2005
3
If the original system clock is in
the daylight saving time range,
the original system clock +
summer-offset is displayed.
Configure: clock summer-time
ss one-off 00:30 2005/1/1 1:00
2005/8/8 2
Display: 03:00:00 ss Sat
01/01/2005