Sync Time between parent domain and child domain

Hi Experts,

I'm having a problem with sync time between parent domain and child domain.

How can I do to configure is well?

Check one of the many problems that I have because of this issue:

C:\Users\Administrator>repadmin /replsum
Replication Summary Start Time: 2010-04-16 14:30:47

Beginning data collection for replication summary, this may take awhile:

Source DSA          largest delta    fails/total %%   error
 CHLD01                    38m:09s    1 /   4   25  (1398) There is a time and/o
r date difference between the client and server.
 DC01                  04h:39m:41s    0 /   4    0

Destination DSA     largest delta    fails/total %%   error
 CHLD01                04h:39m:41s    0 /   4    0
 DC01                      38m:44s    1 /   4   25  (1398) There is a time and/o
r date difference between the client and server.

Who is Participating?
abolinhasConnect With a Mentor Author Commented:
Hi mkline71,

This article fix my problem

Thanks for your help

Best regards
Mike KlineCommented:
How do you have time setup in your forest?  Do you have the PDC emulator in the root pointing to an external and/or reliable source then letting the windows time hierarchy take over from there?

Tigermatt has a great blog entry on how it should be setup

What do you get if you run   w32tm /monitor  | find /i "NTP:"


abolinhasAuthor Commented:
Check the output
C:\Users\Administrator> w32tm /monitor  | find /i "NTP:"
    NTP: +0.0000000s         RefID:  [0x00000000]
Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

Mike KlineCommented:
what about just w32tm /monitor

Do you have things setup like Matt outlined?
abolinhasAuthor Commented:
C:\Users\Administrator>w32tm /monitor
chld01.evora01.florasul.lan *** PDC ***[[fe80::8537:7804:3ad6:c900%11]:123]:
    ICMP: 0ms delay
    NTP: +0.0000000s offset from chld01.evora01.florasul.lan
        RefID: (unspecified / unsynchronized) [0x00000000]
        Stratum: 0

Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.
abolinhasAuthor Commented:
I found this issue on server, if I do net time \\ /SET /YES the server sync the time with parent domain, but after one hour he unsynchronize again.

For example: When I Sync the time sync to 22:00:00 but after one hour or less he unsynchronize to 19:00:00.


André Bolinhas

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