Users Guide

The ntp master command enables the local switch to serve time to other client devices when the configured real-time
sources are not reachable.
ntp master {2–10}
Configure NTP
OS10(config)# ntp authenticate
OS10(config)# ntp trusted-key 345
OS10(config)# ntp authentication-key 345 md5 0 5A60910FED211F02
OS10(config)# ntp server 1.1.1.1 key 345
OS10(config)# ntp master 7
View NTP configuration
OS10(config)# do show running-configuration
!
ntp authenticate
ntp authentication-key 345 md5 0 5A60910FED211F02
ntp server 1.1.1.1 key 345
ntp trusted-key 345
ntp master 7
...
Sample NTP configuration
The following example shows an NTP master (11.0.0.2), server (10.0.0.1), and client (10.0.0.2) connected through a nondefault
VRF instance (VRF Red). OS10 acts as an NTP server to synchronize its clock with the NTP master available in the nondefault
VRF instance red and provides time to NTP clients in the VRF.
To create this sample NTP configuration:
1. Configure the NTP server:
a. Create a nondefault VRF instance and assign an interface to the VRF.
OS10(conf-vrf)# exit
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# no switchport
OS10(conf-if-eth1/1/1)# ip vrf forwarding red
OS10(conf-if-eth1/1/1)# ip address 10.0.0.1/24
OS10(conf-if-eth1/1/1)# exit
OS10(config)# interface ethernet 1/1/5
OS10(conf-if-eth1/1/5)# no switchport
OS10(conf-if-eth1/1/5)# ip vrf forwarding red
158
System management