Question : Sync time across different domains

Hi,

I am looking for non 3rd party solutions to sync time across different domains (nt, 2000, 2003).
I understand that for a single domain, computers under that domain will be time sync'ed to the PDC of that domain.

I wish know how i can sync the PDCs of different domains such that all the domains, with their computers will have the same time, hopefully down to the second. I wish to do this by native windows methods (eg: net time).

Can such a solution be sustained without resyncing periodically?
Is there any ways to test reliably if the solution actually work? Since we are talking about computers across several domain, probably physically  far apart as well.

Please advice.

Answer : Sync time across different domains

go to your PDC on both domains and assign an external time source....

use this,,,it's very reliable....it's military time source.

net time /setsntp:tick.usno.navy.mil,tock.usno.navy.mil

now set every client and secondary domain controller to sync with the PDC.

This can be done several ways, but I prefer logon script:

IF %computername% == YOURDOMAINCONTROLLERNAME EXIT                  <<<<(must be in caps)
net time /setsntp:YOURDOMAINCONTROLLERNAME                                      <<<<(must be in caps)
EXIT