Hello Suresh,
Here is the process to configure NTP
Router> enable
password: *********
Router# config t
Router(config)# ntp server 192.168.1.1
Router(config)# exit
Router# wr mem
Then you can check it with below commands
Router>show ntp associations
address ref clock st when poll reach delay offset disp
*~192.168.1.1 .CLKW. 1 35 64 377 23.9 -0.45 1.2
The star (*) displayed next to the configured (~) peer indicates the router is synchronized with ClockWatch.
Router>show ntp associations detail
192.168.1.1 configured, our_master, sane, valid, stratum 1
ref ID .CLKW., time C6124378.B35E47B9 (15:21:28.700 UTC Thu Apr 21 2005)
our mode client, peer mode server, our poll intvl 64, peer poll intvl 16
root delay 1003.92 msec, root disp 3.92, reach 377, sync dist 519.028
delay 23.88 msec, offset -0.4462 msec, dispersion 1.21
precision 2**18, version 3
org time C61255D6.AFDF0000 (16:39:50.686 UTC Thu Apr 21 2005)
rcv time C61255D6.B30ADC84 (16:39:50.699 UTC Thu Apr 21 2005)
xmt time C61255D6.ACEDE6D8 (16:39:50.675 UTC Thu Apr 21 2005)
filtdelay = 23.88 24.12 28.26 23.90 23.77 24.83 24.63 24.02
filtoffset = -0.45 -1.59 -0.55 1.01 0.45 1.74 -0.44 1.71
filterror = 0.02 0.99 1.97 2.94 3.92 3.94 3.95 3.97
If its still not working then please check if any firewall or access list may filtering the NTP ip address.
Please rate if this helps
thanks
