Implementing NTP on Cisco IOS XR Software
How to Implement NTP on Cisco IOS XR Software
SMC-179
Cisco IOS XR System Management Configuration Guide
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
ntp
Example:
RP/0/RP0/CPU0:router(config)# ntp
Enters NTP configuration mode.
Step 3
authenticate
Example:
RP/0/RP0/CPU0:router(config-ntp)# authenticate
Enables the NTP authentication feature.
Step 4
authentication-key
key-number
md5 [clear |
encrypted] key-name
Example:
RP/0/RP0/CPU0:router(config-ntp)#
authentication-key 42 md5 clear key1
Defines the authentication keys.
• Each key has a key number, a type, a value, and,
optionally, a name. Currently the only key type
supported is md5.
Step 5
trusted-key
key-number
Example:
RP/0/RP0/CPU0:router(config-ntp)# trusted-key
42
Defines trusted authentication keys.
• If a key is trusted, this router only synchronizes to a
system that uses this key in its NTP packets.
Step 6
end
or
commit
Example:
RP/0/RP0/CPU0:router(config)# end
or
RP/0/RP0/CPU0:router(config)# commit
Saves configuration changes.
• When you issue the end command, the system prompts
you to commit changes:
Uncommitted changes found, commit them before
exiting(yes/no/cancel)?
[cancel]:
–
Entering yes saves configuration changes to the
running configuration file, exits the configuration
session, and returns the router to EXEC mode.
–
Entering no exits the configuration session and
returns the router to EXEC mode without
committing the configuration changes.
–
Entering cancel leaves the router in the current
configuration session without exiting or
committing the configuration changes.
• Use the commit command to save the configuration
changes to the running configuration file and remain
within the configuration session.
