FRS replication accross sites

Hi,

We have our PDC running Windows Server 2008 R2 which is also our AD server. We have 3 other DC servers one running Windows Server 2008 R2 on the same subnet, 2 running Winders server 2003 SP1 on different subnets.

When updating group policy I get the following error -
Event 13508 NTFRS

The File Replication Service is having trouble enbaling replication from Server4(Windows 2003) to Server1(PDC) for c:\windows\sysvol\domain using the DNS name server4.company.com.au. FRS will keep trying.

It replicates to the other 2 DC fine.

Thanks for your help
BalcoAsked:
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Sarang TinguriaConnect With a Mentor Sr EngineerCommented:
I would also have crosschecked replication and DNS prior going further as Zenvenky suggested
Did u see any FRS error events  on "server4.company.com.au" if yes then post event details

if you see any 13568 error on server4.company.com.au then follow below proc


first check that you have proper Connection objects has been created in Sites and Services

Browse \\WorkingDC.domain.local copy sysvol & netlogon and keep backup on ProblemDC &  WorkingDC (If can not browse check network connectivity/Port and don't proceed further)

Go to WorkingDC  stop NTFRS service open regedit and go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Backup/Restore\Process at Startup" change the burflag value to D4 Start NTFRS(File Replication service) service and wait for File Replication event ID 13516 now Go to ProblemDC  stop NTFRS service open regedit go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Backup/Restore\Process at <samp>Startup" change the burflag value to D2 -> Start NTFRS(File Replication service) service and wait for File Replication event ID 13516 now

Check Now your sysvol and netlogon shares are available

Above is called Authoritive(D4) and non-Authoritive Restore (D2)

Refer http://support.microsoft.com/kb/257338 for more info

What happens in a Journal Wrap?
http://blogs.technet.com/b/instan/archive/2009/07/14/what-happens-in-a-journal-wrap.aspx
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ZenVenkyArchitectCommented:
13508 event ID occurs when DNS mis-configuration is there and Firewall is blocking any AD related ports (ex: 135,139,53). Check below links and correct DNS settings and disable Firewall for time being to check File Replication Status.

DNS Best Practices

http://technet.microsoft.com/en-us/library/dd772723(v=ws.10).aspx

Note: Provide repadmin /replsum log to know if any AD replication issues there or not.
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SandeshdubeySenior Server EngineerCommented:
There are multiple reasons for event id 13508 to occur it could be due network latency issue.Ad sites and services are not set corectly,replication issue,dns misconfig,required port not open for AD replication,secure channel broken,etc.See this for more info
http://www.experts-exchange.com/Database/Software/Microsoft_Enterprise/Q_27976516.html

Troubleshooting File Replication Service
 http://technet.microsoft.com/en-us/library/bb727056.aspx
 http://www.eventid.net/display.asp?eventid=13508&eventno=349&source=ntfrs&phase=1
 
FRS problem - event ID 13508 (without 13509)
 http://social.technet.microsoft.com/Forums/en-US/winserverDS/thread/0bb3d213-f266-422e-9ff2-64a23e552af0/
 
Best practices for DNS client settings on DC and domain members.
http://abhijitw.wordpress.com/2012/03/03/best-practices-for-dns-client-settings-on-domain-controller/
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BalcoAuthor Commented:
Thanks for the responses.

There was Network connectivity so this was all good.

On the Problem DC I did find the Journalk Wrap error so procedd with the Authoritive(D4) and non-Authoritive Restore (D2) and it all looks good now.

Do I need to change the registry keys back to 0 formn D4 and D2?
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Sarang TinguriaSr EngineerCommented:
No, Once you have restarted File replication service it will auto revert to 0
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BalcoAuthor Commented:
The solution was very thorough and easy to understand and follow.
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