Configuration:
!
ntp server 10.50.36.42 prefer
ntp server 10.50.44.69
!
clock timezone IST 5 3
!
Status:
show ntp association
show ntp association detail
show ntp status
Sample Output:
SW01#sh ntp association
address ref clock st when poll reach delay offset disp
~127.127.7.1 127.127.7.1 9 50 64 377 0.0 0.00 0.0
~10.50.44.69 10.50.36.106 5 21231 1024 0 3.8 -4.26 16000.
+~10.50.44.101 10.50.38.114 5 57 64 1 3.6 -4.30 15875.
+~10.50.44.37 10.50.36.50 5 1 256 377 0.8 1.24 0.2
~10.50.44.133 10.50.38.170 5 12142 1024 0 3.2 1.24 16000.
+~10.50.44.165 10.50.38.178 5 35 256 357 2.5 -4.09 0.2
+~10.50.38.42 86.79.127.250 4 7 256 377 0.8 -0.29 0.2
*~10.50.36.42 86.79.127.250 4 188 256 377 0.7 -0.17 0.3
+~10.50.38.50 86.79.127.250 4 42 256 377 0.9 1.02 0.4
+~10.50.36.50 86.79.127.250 4 20 256 377 0.7 0.87 0.5
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
SW01#sho ntp status
Clock is synchronized, stratum 2, reference is 10.4.2.254
nominal freq is 250.0000 Hz, actual freq is 250.5630 Hz, precision is 2**18
reference time is D36968F7.7E3019A9 (02:12:07.492 UTC Fri May 25 2012)
clock offset is 417.2868 msec, root delay is 2.85 msec
root dispersion is 673.42 msec, peer dispersion is 261.80 msec
NTP Debug:
debug ip packets <acl>
debug ntp packets
debug ntp validity
debug ntp sync
debug ntp events
Reference Link:
http://www.cisco.com/c/en/us/support/docs/ip/network-time-protocol-ntp/116161-trouble-ntp-00.html
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