DFSR - The DFS Replication service failed to communicate with partner
We have recently removed our last W2K3 R2 DC and now have four W2K8 DCs over two sites. The domain is still Running 2003 Forest and domains levels.
We use DFSR between two sites with two root servers file1 and file2 both running W2K8. The namespace type is 'Domain (Windows 2000 Server mode)'. DFS was orginally running on Windows 2003 R2. I have moved to the new hosting servers running W2K8 R2 and updated the root servers. Everything has been working fine for weeks up until the removal of the last W2K3 DC yesterday which also had WINS. I had updated the network with WINS at both sites on two of the four new DC's (one at each site) but since removing WINS from the old W2K3 DC I am now getting event errors on file2 at site 2 (only) and replication is failing
==========================
Log Name: DFS Replication
Source: DFSR
Date: 03/05/2012 13:12:24
Event ID: 5008
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: FILE2.domain.local
Description:
The DFS Replication service failed to communicate with partner FILE2 for replication group kgfruits.local\dfs\wares data. This error can occur if the host is unreachable, or if the DFS Replication service is not running on the server.
Partner DNS Address: FILE2.<domain>
Optional data if available:
Partner WINS Address: FILE2
Partner IP Address: IP
The service will retry the connection periodically.
Additional Information:
Error: 1722 (The RPC server is unavailable.)
Connection ID: 130A1D31-33DD-4115-85E4-43
Replication Group ID: 8F7A93B0-55AA-4C26-858B-A7
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="DFSR" />
<EventID Qualifiers="49152">5008</E
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000
<TimeCreated SystemTime="2012-05-03T12:
<EventRecordID>3108</Event
<Channel>DFS Replication</Channel>
<Computer>FILE2.domain.loc
<Security />
</System>
<EventData>
<Data>130A1D31-33DD-4115-8
<Data>FILE2</Data>
<Data>DFS DATA PATH
<Data>FILE2.domain.local
<Data>FILE2</Data>
<Data>IP</Data>
<Data>1722</Data>
<Data>The RPC server is unavailable.</Data>
<Data>8F7A93B0-55AA-4C26-8
</EventData>
</Event>
==========================
* DFSDIAG test all look fine
(http://blogs.technet.com/b/josebda/archive/2009/07/15/five-ways-to-check-your-dfs-namespaces-dfs-n-configuration-with-the-dfsdiag-exe-tool.aspx)
* Verifys topology successfully in DFS Mgmt.
* Diagnositic report from FILE1 shows FILE2 unavailable for reporting with 'Cannot connect to reporting DCOM server - The RPC server is unavailable. ' and sends you here http://support.microsoft.com/Default.aspx?kbid=839880
*Diagnostic reports from FILE2 just hangs (problem server).
*DCDIAG /V - everything is working fine on all four DC's
*DCDIAG /TEST:DNS - everything is working fine on all four DC's
* Have performed NBTStat -AA on all servers to refresh the WINS db
Still not working :(
Suppose I could migrate (http://technet.microsoft.com/en-us/library/cc753875.aspx) but a pain as it causes a big problem and seems a bit drastic!
thanks ;)
We use DFSR between two sites with two root servers file1 and file2 both running W2K8. The namespace type is 'Domain (Windows 2000 Server mode)'. DFS was orginally running on Windows 2003 R2. I have moved to the new hosting servers running W2K8 R2 and updated the root servers. Everything has been working fine for weeks up until the removal of the last W2K3 DC yesterday which also had WINS. I had updated the network with WINS at both sites on two of the four new DC's (one at each site) but since removing WINS from the old W2K3 DC I am now getting event errors on file2 at site 2 (only) and replication is failing
==========================
Log Name: DFS Replication
Source: DFSR
Date: 03/05/2012 13:12:24
Event ID: 5008
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: FILE2.domain.local
Description:
The DFS Replication service failed to communicate with partner FILE2 for replication group kgfruits.local\dfs\wares data. This error can occur if the host is unreachable, or if the DFS Replication service is not running on the server.
Partner DNS Address: FILE2.<domain>
Optional data if available:
Partner WINS Address: FILE2
Partner IP Address: IP
The service will retry the connection periodically.
Additional Information:
Error: 1722 (The RPC server is unavailable.)
Connection ID: 130A1D31-33DD-4115-85E4-43
Replication Group ID: 8F7A93B0-55AA-4C26-858B-A7
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="DFSR" />
<EventID Qualifiers="49152">5008</E
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000
<TimeCreated SystemTime="2012-05-03T12:
<EventRecordID>3108</Event
<Channel>DFS Replication</Channel>
<Computer>FILE2.domain.loc
<Security />
</System>
<EventData>
<Data>130A1D31-33DD-4115-8
<Data>FILE2</Data>
<Data>DFS DATA PATH
<Data>FILE2.domain.local
<Data>FILE2</Data>
<Data>IP</Data>
<Data>1722</Data>
<Data>The RPC server is unavailable.</Data>
<Data>8F7A93B0-55AA-4C26-8
</EventData>
</Event>
==========================
* DFSDIAG test all look fine
(http://blogs.technet.com/b/josebda/archive/2009/07/15/five-ways-to-check-your-dfs-namespaces-dfs-n-configuration-with-the-dfsdiag-exe-tool.aspx)
* Verifys topology successfully in DFS Mgmt.
* Diagnositic report from FILE1 shows FILE2 unavailable for reporting with 'Cannot connect to reporting DCOM server - The RPC server is unavailable. ' and sends you here http://support.microsoft.com/Default.aspx?kbid=839880
*Diagnostic reports from FILE2 just hangs (problem server).
*DCDIAG /V - everything is working fine on all four DC's
*DCDIAG /TEST:DNS - everything is working fine on all four DC's
* Have performed NBTStat -AA on all servers to refresh the WINS db
Still not working :(
Suppose I could migrate (http://technet.microsoft.com/en-us/library/cc753875.aspx) but a pain as it causes a big problem and seems a bit drastic!
thanks ;)
ASKER
I have done this prior to posting which enables port 135 - http://technet.microsoft.com/en-us/library/cc774368(WS.10).aspx but no change so I switched off the Firewall for the past few hours on both file servers and DC's but again no change.
I haven't tried disabling AV - will give that a go!
DNS is in place and working fine. No errors reported. If I flush the DNS and displaydns for the new records everything looks correct. Even the WINS records are correct.
Report back shortly. thanks
I haven't tried disabling AV - will give that a go!
DNS is in place and working fine. No errors reported. If I flush the DNS and displaydns for the new records everything looks correct. Even the WINS records are correct.
Report back shortly. thanks
ASKER
Disabled AV but no change after stopping and starting DFS replication - same events being logged.
I performed a proagation test/report as it's only effecting 8 of 11 DFS replication groups. Here is the outcome...
Error: Member FILE2.domain : Cannot read values from WMI provider on the member. WMI query Select * from DfsrIdRecordInfo where ReplicatedFolderGuid = "F20AD150-1DD3-4AE2-B021-6
does this shed any light?
I performed a proagation test/report as it's only effecting 8 of 11 DFS replication groups. Here is the outcome...
Error: Member FILE2.domain : Cannot read values from WMI provider on the member. WMI query Select * from DfsrIdRecordInfo where ReplicatedFolderGuid = "F20AD150-1DD3-4AE2-B021-6
does this shed any light?
ASKER CERTIFIED SOLUTION
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ASKER
Solved issue myself.
Make sure local windows firewall is off and try to temprorely disable Antivirus and check
additionally ,
Please check the below link which helps you to understand neccessary ports required for replication over Firewall.
http://social.technet.microsoft.com/wiki/contents/articles/active-directory-replication-over-firewalls.aspx
http://blogs.technet.com/b/janelewis/archive/2006/11/13/ports-used-in-active-directory-replication.aspx
Additionally you can use PortQry tool to check the firewall ports. You can download it from the below link.
http://www.microsoft.com/download/en/details.aspx?id=17148
Using PortQry for Troubleshooting.
http://blogs.technet.com/b/askds/archive/2009/01/22/using-portqry-for-troubleshooting.aspx
Also is your DNS is in Place? Check for DNS misconfiguration.
Refer below article to understand this.
http://support.microsoft.com/kb/321046
Please refer below link which discuss the same dilemma
https://www.experts-exchange.com/questions/22492765/DFS-Replication-only-occuring-one-direction.html?anchorAnswerId=18853724#a18853724
Hope this information helps
Regards,
_Prashant_