backup-ntp-server 
  —— The IP address for the Secondary NTP Server. 
fetching-rate
 —— Specify the rate fetching time from NTP server. 
Command Mode 
Global Configuration Mode 
Privilege Requirement 
Only Admin and Operator level users have access to these commands. 
Example 
Configure the system time mode as NTP, the time zone is UTC-12:00, the 
primary NTP server is 133.100.9.2 and the secondary NTP server is 
139.78.100.163, the fetching-rate is 11 hours: 
T2500G-10TS(config)# system-time ntp UTC-12:00 133.100.9.2 
139.79.100.163 11 
21.3  system-time dst predefined 
Description 
The  system-time dst predefined  command is used to select a daylight 
saving time configuration from the predefined mode. The configuration can 
be used recurrently. To disable DST function, please use no system-time dst 
command. 
Syntax 
system-time dst predefined [ USA
 | 
Australia | Europe | New-Zealand ] 
no system-time dst 
Parameter 
USA
 | 
Australia | Europe | New-Zealand —— The mode of daylight saving time. 
There  are 4 options which are USA, Australia, Europe  and New-Zealand 
respectively. The default value is Europe. 
Following are the time ranges of each option: 
USA: Second Sunday in March, 02:00 ~ First Sunday in November, 02:00. 
Australia: First Sunday in October, 02:00 ~ First Sunday in April, 03:00. 
Europe: Last Sunday in March, 01:00 ~ Last Sunday in October, 01:00. 
New Zealand: Last Sunday in September, 02:00 ~ First Sunday in April, 03:00. 
Command Mode 
Global Configuration Mode 
155