Cisco NCS 6000 Series Configuration Manual page 46

Configuring NTP Authentication
DETAILED STEPS
Command or Action
Step 1
configure
Step 2 ntp
Example:
RP/0/RP0/CPU0:router(config)# ntp
Step 3
authenticate
Example:
RP/0/RP0/CPU0:router(config-ntp)#
authenticate
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
Step 5 trusted-key key-number
Example:
RP/0/RP0/CPU0:router(config-ntp)#
trusted-key 42
Step 6 Use one of the following commands:
• end
• commit
Example:
RP/0/RP0/CPU0:router(config-ntp)# end
or
RP/0/RP0/CPU0:router(config-ntp)# commit
System Management Configuration Guide for the Cisco NCS 6000 Series Router, Release 5.0.x
36
Purpose
Enters NTP configuration mode.
Enables the NTP authentication feature.
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.
Defines trusted authentication keys.
• If a key is trusted, this router only synchronizes to a system that
uses this key in its NTP packets.
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.
Implementing NTP