R3#sh run | b clock
clock timezone PDST -7
!
ntp authentication-key 1 md5 062B161545430C 7
ntp server 180.40.7.98 key 1
!


R4#sh run | b clock
clock timezone PDST -7
!
ntp authentication-key 1 md5 022B1D6F020B0A 7
ntp server 192.10.32.254
!