Cisco ASR 14000 Series Management Command Reference page 432

authentication-key (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
Examples
The following example shows how to configure the system to synchronize only to systems providing
authentication key 42 in their 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
authenticate (NTP)
peer (NTP)
server (NTP)
trusted-key
Cisco ASR 14000 Series Router System Management Command Reference
SMR-430
Description
Enables NTP authentication.
Configures the system clock to synchronize a peer or to be synchronized by
a peer.
Allows the system clock to be synchronized by a time server.
Designates the key or keys to be trusted.
NTP Commands on Cisco IOS XR Software
OL-17231-01