R3#sh run | i ntp
ntp authentication-key 1 md5 1063102D0C1A17 7
ntp clock-period 17208077
ntp server 180.40.7.98 key 1
R3#
RACK1AS>4
[Resuming connection 4 to r4 ... ]

R4(config)#^Z
R4#
Dec 23 17:14:49.208: %SYS-5-CONFIG_I: Configured from console by console
R4#sh run | i ntp
ntp authentication-key 1 md5 112400311E1F0E 7
ntp trusted-key 1
ntp server 192.10.32.254
R4#