Cisco Systems SMC-169 manual SMC-186

Implementing NTP on Cisco IOS XR Software

How to Implement NTP on Cisco IOS XR Software

SUMMARY STEPS

1.configure

2.ntp

3.update-calendar

4.end or commit

DETAILED STEPS

	Command or Action	Purpose
Step 1
	configure	Enters global configuration mode.
	Example:
	RP/0/RP0/CPU0:router# configure
Step 2
	ntp	Enters NTP configuration mode.
	Example:
	RP/0/RP0/CPU0:router(config)# ntp
Step 3
	update-calendar	Configures the system to update its hardware clock from the
		software clock at periodic intervals.
	Example:
	RP/0/RP0/CPU0:router(config-ntp)#
	update-calendar
Step 4
	end	Saves configuration changes.
	or	• When you issue the end command, the system prompts
	commit	you to commit changes:
		Uncommitted changes found, commit them before
	Example:	exiting(yes/no/cancel)?
	RP/0/RP0/CPU0:router(config)# end	[cancel]:
	or	– Entering yes saves configuration changes to the
	RP/0/RP0/CPU0:router(config)# commit
		running configuration file, exits the configuration
		session, and returns the router to EXEC mode.
		– Entering no exits the configuration session and
		returns the router to EXEC mode without
		committing the configuration changes.
		– Entering cancel leaves the router in the current
		configuration session without exiting or
		committing the configuration changes.
		• Use the commit command to save the configuration
		changes to the running configuration file and remain
		within the configuration session.

Cisco IOS XR System Management Configuration Guide

SMC-186