Router (NTP master) always falls behind its scheduled time

Unanswered Question
Dec 1st, 2009


router  Cisco 7206VXR (NPE-G2), ( which is configured as NTP master for all the core devices in network;) which  has problem a with its clock. The Router always falls behind its scheduled time even after re-configuring the clock number of times to match the current time.

Please let me know the root cause of the same.

configuration as mentioned below -

ntp clock-period 17177542
ntp master
ntp server ( IP Of this Router Itself)
periodic weekdays 10:00 to 13:00
periodic Saturday 10:00 to 13:00

RTR1# show clo
RTR1# show clock
13:35:38.213 IST Mon Nov 30 2009

SRTR1#show ntp
SRTR1#show ntp st
RTR1#show ntp status
Clock is synchronized, stratum 8, reference is
nominal freq is 250.0000 Hz, actual freq is 250.0338 Hz, precision is 2**24
reference time is CEBDFB40.A2B59512 (13:35:20.635 IST Mon Nov 30 2009)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.02 msec, peer dispersion is 0.02 msec

I have this problem too.
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Edison Ortiz Mon, 12/07/2009 - 07:35

You shouldn't rely on the internal clock from a router to provide time for the rest of the network. It is very unreliable and it was not designed as such. If you have an internet connection, I recommend pointing this router to a public NTP server for accurate clock information and point the rest of devices in your network to this router. With this design, the router will serve as a NTP gateway.




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