(
1
)
交换机配置
//
配置
CISCO
设备当前日期及时区
SW#
SW#conf t
SW(config)#clock timezone GMT +8
SW(config-if)#end
SW#clock set 11:05:00 8 apr 2009
//
配置接口
IP
,以实现与
NTP
服务器通信
SW#
SW#conf t
SW(config)#int f0/0
SW(config-if)#ip add 192.168.0.69 255.255.255.0
SW(config-if)#no shutdown
SW(config-if)#end
SW#
//
配置
NTP Client
,并指定
NTP
服务器
SW#
SW#conf t
SW(config)#service timestamps log datetime localtime
SW(config)#service timestamps debug datetime localtime
SW(config)#ntp server 192.168.0.168
SW(config)#ntp update-calendar //
如果有硬件时钟,同步设备硬件时钟
SW(config)#end
SW#
//
查询同步结果,
已经实现了同步
SW#show ntp status
Clock is synchronized, stratum 3, reference is 192.168.0.168
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is CD86975A.71DD2468 (11:24:10.444 GMT Wed Apr 8 2009)
clock offset is -0.1861 msec, root delay is 87.49 msec
root dispersion is 44.14 msec, peer dispersion is 6.87 msec
SW#
SW#show ntp associations
address ref clock st when poll reach delay offset disp
*~192.168.0.168 210.72.145.44 2 43 64 377 12.1 -9.25 11.0
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
SW#show clock
11:26:20.286 GMT Wed Apr 8 2009
SW#show clock detail
11:26:25.186 GMT Wed Apr 8 2009
Time source is NTP
SW#
(2)
路由器配置
//
配置
CISCO
设备当前日期及时区
Router#
Router#conf t
Router(config)#clock timezone GMT +8
Router(config)#en
Router#clock set 11:28:00 8 apr 2009
//
配置接口
IP
,以实现与
NTP
服务器通信
Router#
Router#conf t
Router(config)#int f0/0
Router(config-if)#ip add 192.168.0.70 255.255.255.0
Router(config-if)#no shutdown
//
配置
NTP Client
,并指定
NTP
服务器
Router#
Router#conf t
Router(config)#ntp server 192.168.0.168
Router(config)#ntp update-calendar //
如果有硬件时钟,同步设备硬件时钟
Router(config)#end
Router#
//
查询同步结果,
已经实现了同步
Router#show ntp status
Clock is synchronized, stratum 14, reference is 192.168.0.168
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is CD869958.18F04EA3 (11:32:40.097 GMT Wed Apr 8 2009)
clock offset is 0.0124 msec, root delay is 8.30 msec
root dispersion is 15886.52 msec, peer dispersion is 15875.02 msec
Router#show ntp associations
address ref clock st when poll reach delay offset disp
*~192.168.0.168 127.127.1.0 13 0 64 177 4.2 0.63 126.0
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
Router#show clock
11:32:50.593 GMT Wed Apr 8 2009
Router#show clock detail
11:32:58.405 GMT Wed Apr 8 2009
Time source is NTP