Cisco Systems SMC-169 User Manual download pdf

SMC-169

Cisco IOS XR System Management Configuration Guide

Implementing NTP on Cisco IOS XR Software

Network Time Protocol (NTP) is a protocol designed to time-synchronize devices within a network. The

Cisco IOS XR software implements NTPv4. NTPv4 retains backwards compatibility with the older

versions of NTP, including NTPv3 and NTPv2 but excluding NTPv1, which has been discontinued due

to security vulnerabilities.

This module describes the new and revised tasks you need to implement NTP on your Cisco IOS XR

network.

Note For more information about NTP on the Cisco IOS XR software and complete descriptions of the NTP

commands listed in this module, you can refer to the “Related Documents” section of this module. To

locate documentation for other commands that might appear in the course of running a configuration

task, search online in the Cisco IOS XR software master command index.

Feature History for Implementing NTP on Cisco IOS XR Software Contents

Contents

• Prerequisites for Implementing NTP on Cisco IOS XR Software, page SMC-170

• Information About Implementing NTP on Cisco IOS XR Software, page SMC-170

• How to Implement NTP on Cisco IOS XR Software, page SMC-171

• Configuration Examples for Implementing NTP on Cisco IOS XR Software, page SMC-187

• Additional References, page SMC-191

Release Modification

Release 2.0 This feature was introduced on the Cisco CRS-1.

Release 3.0 No modification.

Release 3.2 Support was added for the Cisco XR 12000 Series Router.

Release 3.3.0 No modification.

1 2 3 4 5 6 ... 23 24

Summary of Contents

Page 1 - Contents

SMC-169Cisco IOS XR System Management Configuration GuideImplementing NTP on Cisco IOS XR SoftwareNetwork Time Protocol (NTP) is a protocol designed t

Page 2 - NTP Functional Overview

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-178Cisco IOS XR System Management Configuration GuideConfigu

Page 3 - Poll-Based Associations

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-179Cisco IOS XR System Management Configuration GuideDETAILE

Page 4

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-180Cisco IOS XR System Management Configuration GuideDisabli

Page 5

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-181Cisco IOS XR System Management Configuration GuideStep 3n

Page 6

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-182Cisco IOS XR System Management Configuration GuideConfigu

Page 7 - Configuring NTP Access Groups

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-183Cisco IOS XR System Management Configuration GuideStep 3s

Page 8

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-184Cisco IOS XR System Management Configuration GuideConfigu

Page 9

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-185Cisco IOS XR System Management Configuration GuideUpdatin

Page 10 - NTP Authentication

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-186Cisco IOS XR System Management Configuration GuideSUMMARY

Page 11 - DETAILED STEPS

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-187Cisco IOS XR System Management Configuration GuideVerifyi

Page 12 - SUMMARY STEPS

Implementing NTP on Cisco IOS XR SoftwarePrerequisites for Implementing NTP on Cisco IOS XR SoftwareSMC-170Cisco IOS XR System Management Configuratio

Page 13 - Example:

Implementing NTP on Cisco IOS XR SoftwareConfiguration Examples for Implementing NTP on Cisco IOS XR SoftwareSMC-188Cisco IOS XR System Management Con

Page 14

Implementing NTP on Cisco IOS XR SoftwareConfiguration Examples for Implementing NTP on Cisco IOS XR SoftwareSMC-189Cisco IOS XR System Management Con

Page 15

Implementing NTP on Cisco IOS XR SoftwareConfiguration Examples for Implementing NTP on Cisco IOS XR SoftwareSMC-190Cisco IOS XR System Management Con

Page 16

Implementing NTP on Cisco IOS XR SoftwareAdditional ReferencesSMC-191Cisco IOS XR System Management Configuration GuideUpdating the Hardware Clock: Ex

Page 17 - Updating the Hardware Clock

Implementing NTP on Cisco IOS XR SoftwareAdditional ReferencesSMC-192Cisco IOS XR System Management Configuration GuideRFCsTechnical AssistanceRFCs Ti

Page 18

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-171Cisco IOS XR System Management Configuration GuideThe com

Page 19 - Examples

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-172Cisco IOS XR System Management Configuration GuideThe fol

Page 20 - Software

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-173Cisco IOS XR System Management Configuration GuideConfigu

Page 21

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-174Cisco IOS XR System Management Configuration GuideWhen a

Page 22

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-175Cisco IOS XR System Management Configuration GuideConfigu

Page 23 - Additional References

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-176Cisco IOS XR System Management Configuration GuideIf the

Page 24 - Technical Assistance

Implementing NTP on Cisco IOS XR SoftwareHow to Implement NTP on Cisco IOS XR SoftwareSMC-177Cisco IOS XR System Management Configuration GuideStep 3a