SMC-182

Implementing NTP on Cisco IOS XR Software

How to Implement NTP on Cisco IOS XR Software

Configuring the Source IP Address for NTP Packets

This task explains how configure the source IP address for NTP packets.

When the system sends an NTP packet, the source IP address is normally set to the address of the interface through which the NTP packet is sent.

Note No specific command enables NTP; the first NTP configuration command that you issue enables NTP.

1.configure

2.ntp

3.source interface-type interface-instance

4.end or commit

	Command or Action	Purpose
Step 1
Step 1	configure	Enters global configuration mode.
	Example:
	RP/0/RP0/CPU0:router# configure
Step 2
Step 2	ntp	Enters NTP configuration mode.
	Example:
	RP/0/RP0/CPU0:router(config)# ntp

Cisco IOS XR System Management Configuration Guide

Image 14

Contents

Implementing NTP on Cisco IOS XR Software NTP Functional Overview SMC-170 SMC-171 Configuring Poll-Based AssociationsPoll-Based Associations Summary Steps SMC-172 SMC-173 Configuring Broadcast-Based NTP AssociationsBroadcast-Based NTP Associations SMC-174 SMC-175 Configuring NTP Access GroupsNTP Access Groups SMC-176 SMC-177 SMC-178 Configuring NTP AuthenticationNTP Authentication Supported is md5 SMC-179 Disabling NTP Services on a Specific Interface SMC-180 SMC-181 Configuring the Source IP Address for NTP Packets SMC-182 SMC-183 Configuring the System as an Authoritative NTP Server SMC-184 Updating the Hardware Clock SMC-185 SMC-186 SMC-187 Verifying the Status of the External Reference ClockExamples SMC-188 Configuring Poll-Based Associations ExampleConfiguring Broadcast-Based Associations Example SMC-189 Configuring NTP Access Groups ExampleConfiguring NTP Authentication Example SMC-190 Configuring the Source IP Address for NTP Packets ExampleDisabling NTP on an Interface Example Standards Updating the Hardware Clock ExampleRelated Documents MIBs SMC-192 RFCsTechnical Assistance