System Clock
The system clock is used for timestamps in log messages. Timestamps and other time displays are in local time.
Display the Time
To display the current time, time-zone setting and time synchronization status use the show clock
command.
admin@NX-3550-T# show clock
Tue Sep 1 01:05:00 2020
Timezone is Australia/Sydney
Time source is NTP
Configure the Time-zone
To configure the time-zone, use the clock timezone
command in config mode. For example, to set the time-zone to US Eastern time use the following command:
admin@NX-3550-T(config)# clock timezone US/Eastern
Time zone set to US/Eastern
admin@NX-3550-T(config)# show clock
Mon Aug 31 21:05:33 2020
Timezone is US/Eastern
Time source is NTP
Synchronize the Time by Using NTP
The Cisco Nexus 3550-T Programmable Switch Platform supports synchronizing the system clock by using NTP.
-
To add a server to the list of NTP server, use the
ntp server
command. You can specify multiple servers by using this command. -
To designate some of the servers as preferred servers use the
prefer
keyword. In this case, the other servers are used if no preferred servers are available.admin@NX-3550-T(config)# ntp server 172.16.0.251 prefer Added NTP server 172.16.0.251 admin@NX-3550-T(config)# ntp server 172.16.0.252 Added NTP server 172.16.0.252
-
To view the status of NTP time synchronization, use the
show ntp status
command.admin@NX-3550-T# show ntp status Synchronized to NTP server (172.16.0.251) at stratum 4 Time correct to within 63 ms Polling server every 2048 s
-
To remove a NTP server from the list, use the
no ntp server
command.admin@NX-3550-T(config)# no ntp server 172.16.0.251 Removed NTP server 172.16.0.251