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NTP server

nelslarson
nelslarson asked
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Last Modified: 2013-02-02
my whole network is 5 minutes behind.  How do I sync my servers with ntp and then get the servers to update down to my network stations.
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Commented:
Assuming that this is an AD domain: on the PDC emulator, open a command prompt and run

w32tm /config /manualpeerlist:<NTP server> /update
w32tm /resync

The NTP server can be one from http://www.pool.ntp.org/, or from the list below, or maybe your ISP offers one.
A list of the Simple Network Time Protocol (SNTP) time servers that are available on the Internet
http://support.microsoft.com/kb/262680

Then simply make sure that UDP port 123 outbound (to your ntp server) is open.
Other DCs will sync with the PDCe, domain members will sync with the authenticating DC.

Author

Commented:
where is the pdc emulator and yes it is ad
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Commented:
In a command window, run
netdom query fsmo
if you have the support tools installed, or use any of the alternative methods described here:
How can I determine who are the current FSMO Roles holders in my domain/forest?
http://www.petri.co.il/determining_fsmo_role_holders.htm

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Commented:
I found that out but when I run the : w32tm /config /manualpeerlist:<NTP server> /update
 that it says it is unknown.
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You obviously have to replace <NTP sefrver> with a valid IP address or FQDN of an NTP server geographically close to you.
Especially if you should decide for one of the pool.ntp.org, add a ",0x8" at the end of the IP address/name:
Example with the first NTP server from the Microsoft KB article:
w32tm /config /manualpeerlist:129.6.15.28,0x8 /update

Commented:
What *exactly* does it say, because that command and syntax is correct. You did replace '<NTP server>' with your ISP's (or maybe even your own if you have one) NTP server's IP/fqdn?

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Commented:
I get command /config/manualpeerlist:208.184.48.129,0x8/update is unknown and that is with the w32tm in front of it.
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Commented:
The arguments need to be separated by spaces:
w32tm /config /manualpeerlist:208.184.48.129,0x8 /update

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Commented:
I think this software can help http://nts.softros.com/
It has server and client parts for time synchronization control.

Author

Commented:
the space helped me out.  Thanks.
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