Configuring Poll-Based Associations Example

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