>sh run | i ntp
ntp disable
access-list 105 permit udp host xxx.xxx.xxx.xxx host ipcisco eq ntp
access-list 105 permit udp any eq ntp any eq ntp
ntp clock-period 17180070
ntp server xxx.xxx.xxx.xxx source Ethernet0/1 prefer
ntp server 132.246.168.148 version 2
>sh ntp a
address ref clock st when poll reach delay offset disp
~xxx.xxx.xxx.xxx 0.0.0.0 16 - 64 0 0.0 0.00 16000.
~132.246.168.148 0.0.0.0 16 - 64 0 0.0 0.00 16000.
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
>sh ntp s
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 249.5901 Hz, actual freq is 249.9970 Hz, precision is 2**16
reference time is 00000000.00000000 (04:00:00.000 MSD Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.00 msec, peer dispersion is 0.00 msec