R3#sh run | b ntp
clock timezone EST -5
!
ntp authentication-key 1 md5 112400311E1F0E 7
ntp clock-period 17208080
ntp server 180.40.7.98 key 1
!


R4#sh run | b ntp
clock timezone EST -5
!
ntp authentication-key 1 md5 112400311E1F0E 7
ntp clock-period 17179876
ntp server 192.10.32.254
!