AR配置外源NTP
1．配置ntp
<XQ-R1220>sys
[XQ-R1220]ntp-service unicast-server 120.25.115.20 #阿里云ntp
[XQ-R1220]ntp-service unicast-server 203.107.6.88 #阿里云ntp
2．查看ntp状态
<XQ-R1220>display ntp status
clock status: synchronized
clock stratum: 3
reference clock ID: 203.107.6.88
nominal frequency: 100.0000 Hz
actual frequency: 100.0000 Hz
clock precision: 2^12
clock offset: 1.0987 ms
root delay: 54.33 ms
root dispersion: 40.58 ms
peer dispersion: 0.81 ms
reference time: 07:51:25.923 UTC Sep 27 2022(E6DD29FD.EC5B39E2)
核心交换机配置ntp服务
<XQ-S5731>sys
[XQ-S5731]undo ntp server disable #启用ntp server
[XQ-S5731]ntp refclock-master 3 #设置本地设备时钟作为NTP主时钟，层数为3。
[XQ-S5731]display ntp status
clock status: synchronized
clock stratum: 3
reference clock ID: 120.25.115.20
nominal frequency: 100.0000 Hz
actual frequency: 100.0000 Hz
clock precision: 2^17
clock offset: 0.0000 ms
root delay: 60.07 ms
root dispersion: 12.04 ms
peer dispersion: 1.01 ms
reference time: 07:47:53.333 UTC Sep 27 2022(E6DD2929.557C4E2F)
synchronization state: clock synchronized
其他设备配置ntp源为核心交换机
[Bangong_S5735-SW1]ntp-service unicast-server 192.168.100.254
[Bangong_S5735-SW2]ntp-service unicast-server 192.168.100.254
[Bangong_S5735-SW3]ntp-service unicast-server 192.168.100.254
[Bangong_S5735-SW1]display ntp-service sessions
clock source: 192.168.100.254
clock stratum: 3
clock status: configured, master, sane, valid
reference clock ID: 203.107.6.88
reach: 377
current poll: 64
now: 37
offset: 13.5170 ms
delay: 25.24 ms
disper: 3.40 ms
<Bangon_S5735-SW2>display ntp-service sessions
clock source: 192.168.100.254
clock stratum: 3
clock status: configured, master, sane, valid
reference clock ID: 203.107.6.88
reach: 377
current poll: 1024
now: 592
offset: 3.8390 ms
delay: 50.23 ms
disper: 15.66 ms
<Bangon_S5735-SW3>display ntp-service sessions
clock source: 192.168.100.254
clock stratum: 3
clock status: configured, master, sane, valid
reference clock ID: 203.107.6.88
reach: 377
current poll: 1024
now: 136
offset: 120.6635 ms
delay: 47.83 ms
disper: 14.04 ms
