Cisco ASR 14000 Series Management Command Reference page 430

authenticate (NTP)
C i s c o C o n f i d e n t i a l - B e t a R e v i e w R 3 . 7. 1
authenticate (NTP)
To enable Network Time Protocol (NTP) authentication, use the authenticate command in NTP
configuration mode. To restore the system to its default condition, use the no form of this command.
Syntax Description
This command has no arguments or keywords.
Defaults No NTP authentication is configured.
Command Modes NTP configuration
Command History Release
Release 3.7.1
Usage Guidelines To use this command, you must be in a user group associated with a task group that includes the proper
task IDs.
Use the authenticate command to enable NTP authentication. When NTP authentication is enabled, the
system does not synchronize to a time source unless it carries one of the authentication keys specified
by the
Task ID Task ID
ip-services
Examples
The following example shows how to configure the system to synchronize only to a system that provides
an authentication key 42 in its NTP packets:
RP/0/RP0/CPU0:router(config)# ntp
RP/0/RP0/CPU0:router(config-ntp)# authenticate
RP/0/RP0/CPU0:router(config-ntp)# authentication-key 42 md5 clear key1
RP/0/RP0/CPU0:router(config-ntp)# trusted-key 42
Related Commands Command
authentication-key (NTP)
trusted-key
Cisco ASR 14000 Series Router System Management Command Reference
SMR-428
authenticate
no authenticate
Modification
This command was introduced on the Cisco ASR 14000 Series Router.
trusted-key command. Packets failing the authentication check are dropped.
Operations
read, write
Description
Defines an authentication key for NTP.
Designates the key or keys to be trusted.
NTP Commands on Cisco IOS XR Software
OL-17231-01