ntp from ntp.org

I have loaded the Windows 2000 ntp server software port of the Unix
code from NTP.org onto a server and I'm having trouble getting Cisco
devices to accept time. On the Cisco device it will say that time is
synchronized, however, the time shown is not the same time that is on
the NTP server. Should I allow a certain amount of time to elapse for
synchronization to occur or am I just missing something here? I have
both Netware and other NT boxes getting time from this source. I
don't think it should be this difficult.

Please advise.

Thanks,
Scott Crabb

 

Have you accounted for the time difference from GMT/UTC?


B

 

What NTP statements do you have in your router?

Here's a sample from mine for Eastern US...

clock timezone EST -5
clock summer-time EDT recurring
ntp clock-period 17179830
ntp server x.x.x.x

 

Note that you do NOT set the "ntp clock-period" value. IOS automagically
inserts the correct value for your particular platform into the config. If
I'm not mistaken, setting this value manually can lead to problems with NTP
staying in synch.

Cletus

 

This is true.

 

True - Cisco says...

"The ntp clock-period command is added automatically to jump-start the NTP
frequency compensation when the box is rebooted. (Do not configure this
command manually.) This is essentially a representation of the frequency of
the crystal used as the local timebase, and may take several days to
calculate otherwise. Do a write mem after a week or so to save a good
value."