3Com S7906E Configuration Manual page 2333

[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 1-1 Relationship between the configuration and display of the system clock
Configuration
1
2
1 and 2
[1], 2 and 1
3
1 and 3
System clock displayed by
the display clock command
date-time
The original system clock ±
zone-offset
date-time ± zone-offset
date-time
If the original system clock is
not in the daylight saving time
range, the original system clock
is displayed.
If the original system clock is in
the daylight saving time range,
the original system clock +
summer-offset is displayed.
If date-time is not in the daylight
saving time range, date-time is
displayed.
If date-time is in the daylight
saving time range, "date-time"
+ "summer-offset" is displayed.
1-4
Example
Configure: clock datetime 1:00
2007/1/1
Display: 01:00:00 UTC Mon
01/01/2007
Configure: clock timezone
zone-time add 1
Display: 02:00:00 zone-time
Sat 01/01/2005
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
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
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
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
Configure: clock datetime 1:00
2007/1/1 and clock
summer-time ss one-off 1:00
2006/1/1 1:00 2006/8/8 2
Display: 01:00:00 UTC Mon
01/01/2007
Configure: clock datetime 8:00
2007/1/1 and clock
summer-time ss one-off 1:00
2007/1/1 1:00 2007/8/8 2
Display: 10:00:00 ss Mon
01/01/2007