Configuring NTP
The Network Time Protocol (NTP) is used to synchronize the internal clocks of network devices. This is helpful for troubleshooting network problems by correlating events on different network devices using, for example, Syslog messages. NTP provides the switch with a mechanism to accurately update its clock to be consistent with the clocks of other network devices within a precision of one millisecond. NTP uses User Datagram Protocol (UDP) to communicate across the network.
To configure the NTP server, use the following command:
Reference
Command
[no] ntp <ip4addr | ip6addr >
Description
NTP server configuration
Parameters
IPv4 or v6 Address - Router IP
Mode
CONFIG
Example
pbnoscli# configure terminal
pbnoscli(config)# ntp 162.159.200.1
NTP server 162.159.200.1 added to configuration
Restarting ntp-config service...
pbnoscli(config)#
To display the NTP server information, use the following command:
Reference
Command
show ntp
Description
Show NTP configuration
Parameters
None
Mode
EXEC
Example
pbnoscli# show ntp
MGMT_VRF_CONFIG is not present.
synchronised to NTP server (162.159.200.1) at stratum 4
time correct to within 210714 ms
polling server every 64 s
remote refid st t when poll reach delay offset jitter
==============================================================================
*162.159.200.1 10.119.8.125 3 u 56 64 3 17.087 -210624 29.225
pbnoscli#
pbnoscli# show running-config
configure terminal
ntp add 162.159.200.1
!
interface mgmt
ip address 10.4.4.52/24 gateway 10.4.4.1
!
pbnoscli#
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