Prerequisites for Implementing NTP on Cisco IOS XR Software 208
Information About Implementing NTP 208
NTP-PTP Interworking 209
How to Implement NTP 209
Configuring Poll-Based Associations 209
Configuring Broadcast-Based NTP Associates 212
Configuring NTP Access Groups 214
Configuring NTP Authentication 215
Disabling NTP Services on a Specific Interface 217
Configuring the Source IP Address for NTP Packets 219
Configuring the System as an Authoritative NTP Server 220
Configuring NTP-PTP Interworking 222
Updating the Hardware Clock 223
Verifying the Status of the External Reference Clock 225
Examples 225
Configuration Examples for Implementing NTP 226
Configuring NTP server inside VRF interface 228
Additional References 230
CHAPTER 12
Configuring PTP 233
Prerequisites for Implementing PTP on Cisco IOS XR Software 234
Information About Configuring PTP 234
PTP Implementation 234
1588 Packet Types 236
PTP Hybrid Mode 236
ITU-T Telecom Profiles for PTP 236
G.8265.1 Profile 236
States of Ports 237
How to Configure PTP 238
Configuring Frequency and Quality Settings for PTP 238
Configuring Global Profile Settings for PTP 239
Configuring a PTP Slave Interface 241
Configuring the Clock Interface for a PTP Master 243
Configuring a PTP Master Interface 245
Configuring GPS Settings for the Grand Master Clock 247
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
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