Cisco Systems SMC-169 manual Configuration Examples for Implementing NTP on Cisco IOS XR Software

Implementing NTP on Cisco IOS XR Software

Configuration Examples for Implementing NTP on Cisco IOS XR Software

Configuration Examples for Implementing NTP on Cisco IOS XR Software

This section contains the following examples:

•Configuring Poll-Based Associations: Example, page SMC-188

•Configuring Broadcast-Based Associations: Example, page SMC-188

•Configuring NTP Access Groups: Example, page SMC-188

•Configuring NTP Authentication: Example, page SMC-189

•Disabling NTP on an Interface: Example, page SMC-190

•Configuring the Source IP Address for NTP Packets: Example, page SMC-190

•Configuring the System as an Authoritative NTP Server: Example, page SMC-190

•Updating the Hardware Clock: Example, page SMC-191

Configuring Poll-Based Associations: Example

The following example shows an NTP configuration in which the router’s system clock is configured to form a peer association with the time server host at IP address 192.168.22.33, and to allow the system clock to be synchronized by time server hosts at IP address 10.0.2.1 and 172.19.69.1:

!

ntp

server 10.0.2.1 minpoll 5 maxpoll 7 peer 192.168.22.33

server 172.19.69.1

!

Configuring Broadcast-Based Associations: Example

The following example shows an NTP client configuration in which Gigabit Ethernet interface 0/2/0/0 is configured to receive NTP broadcast packets, and the estimated round-trip delay between an NTP client and an NTP broadcast server is set to 2 microseconds:

ntp

interface GigabitEthernet0/2/0/0 broadcast client

!

broadcastdelay 2

The following example shows an NTP server configuration where Gigabit Ethernet interface 0/2/0/2 is configured to be a broadcast server:

ntp

interface GigabitEthernet0/2/0/2 broadcast

!

Cisco IOS XR System Management Configuration Guide

SMC-188