Core-Switch-1#show clockCore-Switch-1#show ntp statusCore-Switch-1#conf tCore-Switch-1(config)# cloc
.
Core-Switch-1#show clock
Core-Switch-1#show ntp status
Core-Switch-1#conf t
Core-Switch-1(config)# clock timezone GMT +8
Core-Switch-1(config)#service timestamps debug datetime msec localtime show-timezone
Core-Switch-1(config)#service timestamps log datetime msec localtime show-timezone
Core-Switch-1(config)#exit
Core-Switch-1# clock set 13:51:00 Sep 7 2011（手动配置）
或通过NTP服务器时间同步：
Core-Switch-1#ntp server 202.112.31.197
Core-Switch-1#wr
Core-Switch-1#show logging
