R3#sh run | i ntp
ntp authentication-key 1 md5 143A0B3F05092F 7
ntp server 180.40.7.98 key 1


R4#sh run | i ntp
ntp authentication-key 1 md5 0961573D100812 7
ntp clock-period 17179867
ntp server 192.10.32.254