One way replication error between sites

[Agilent]

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There is some replication error between the 2 servers that we have. It seems to be one way error. Every servers are Windows 2003 SP1 with all current updates installed. There are 4 sites and each one of them has one DC server. The Sites are connected by VPN and there is Cisco router on each end. The settings of the 4 Cisco are the same or mirrored. All the server clocks are within seconds of each other. But viewing REPLMON on Server2 shows errors from Server3 to Server2 where else viewing REPLMON on Server 1, 3 and 4 shows no errors. You can check the below which is a sample from Server2 REPLMON log:

"USNData","1369307"
"DateTime","9/12/2005 3:32:48 PM"
"PartnerType",">> Direct Replication Partner Data <<"
"DirectPartnerUSN","Property Update USN: 592048"
"DirectPartnerFailure","Changes have not been successfully replicated from
Server3 for 5791 attempt(s)."
"DirectPartnerFailure","The reason is: The remote procedure call failed and
did not execute."
"DirectPartnerFailure","The last replication attempt was: 9/12/2005 2:56:23
PM (local)"

DCDIAG results from Server2

(NOTE: Running from Server1, 3, or 4 all tests pass)

M:\>dcdiag /s:server2

Domain Controller Diagnosis

Performing initial setup:
Done gathering initial info.

Doing initial required tests

Testing server: Elgin\SERVER2
Starting test: Connectivity
......................... SERVER2 passed test Connectivity

Doing primary tests

Testing server: Elgin\SERVER2
Starting test: Replications
[Replications Check,SERVER2] A recent replication attempt failed:
From Server3 to SERVER2
Naming Context: DC=ForestDnsZones,DC=kcdee,DC=org
The replication generated an error (1256):
The remote system is not available. For information about
network t
oubleshooting, see Windows Help.
The failure occurred at 2005-09-12 15:21:37.
The last success occurred at 2005-04-05 17:01:50.
15341 failures have occurred since the last success.
[Replications Check,SERVER2] A recent replication attempt failed:
From Server3 to SERVER2
Naming Context: DC=DomainDnsZones,DC=kcdee,DC=org
The replication generated an error (1256):
The remote system is not available. For information about
network t
oubleshooting, see Windows Help.
The failure occurred at 2005-09-12 15:21:37.
The last success occurred at 2005-04-05 17:01:49.
15342 failures have occurred since the last success.
[Replications Check,SERVER2] A recent replication attempt failed:
From Server3 to SERVER2
Naming Context: CN=Schema,CN=Configuration,DC=kcdee,DC=org
The replication generated an error (1727):
The remote procedure call failed and did not execute.
The failure occurred at 2005-09-12 15:34:15.
The last success occurred at 2005-04-05 17:01:48.
15341 failures have occurred since the last success.
[Replications Check,SERVER2] A recent replication attempt failed:
From Server3 to SERVER2
Naming Context: CN=Configuration,DC=kcdee,DC=org
The replication generated an error (1727):
The remote procedure call failed and did not execute.
The failure occurred at 2005-09-12 15:27:56.
The last success occurred at 2005-04-05 17:01:47.
15345 failures have occurred since the last success.
[Replications Check,SERVER2] A recent replication attempt failed:
From Server3 to SERVER2
Naming Context: DC=kcdee,DC=org
The replication generated an error (1727):
The remote procedure call failed and did not execute.
The failure occurred at 2005-09-12 14:56:23.
The last success occurred at 2005-04-05 17:01:49.
5791 failures have occurred since the last success.
REPLICATION LATENCY WARNING
SERVER2: A long-running replication operation is in progress
The job has been executing for 4 minutes and 12 seconds.
Replication of new changes along this path will be delayed.
Error: Higher priority replications are being blocked
Enqueued 2005-09-12 14:50:34 at priority 90
Op: SYNC FROM SOURCE
NC DC=kcdee,DC=org
DSADN CN=NTDS
Settings,CN=Server3,CN=Servers,CN=dekalb,CN=Sites,CN=
onfiguration,DC=kcdee,DC=org
DSA transport addr
88c91736-5425-4381-91a2-20ab9602d6ab._msdcs.kcde
..org
......................... SERVER2 passed test Replications
Starting test: NCSecDesc
......................... SERVER2 passed test NCSecDesc
Starting test: NetLogons
......................... SERVER2 passed test NetLogons
Starting test: Advertising
......................... SERVER2 passed test Advertising
Starting test: KnowsOfRoleHolders
......................... SERVER2 passed test KnowsOfRoleHolders
Starting test: RidManager
......................... SERVER2 passed test RidManager
Starting test: MachineAccount
......................... SERVER2 passed test MachineAccount
Starting test: Services
......................... SERVER2 passed test Services
Starting test: ObjectsReplicated
......................... SERVER2 passed test ObjectsReplicated
Starting test: frssysvol
......................... SERVER2 passed test frssysvol
Starting test: frsevent
......................... SERVER2 passed test frsevent
Starting test: kccevent
An Warning Event occured. EventID: 0x8000061E
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC000051F
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x80000749
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x8000061E
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC000051F
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x80000749
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x8000061E
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC000051F
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x80000749
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x8000061E
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Error Event occured. EventID: 0xC000051F
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Warning Event occured. EventID: 0x80000749
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
An Information Event occured. EventID: 0x40000524
Time Generated: 09/12/2005 15:27:32
(Event String could not be retrieved)
......................... SERVER2 failed test kccevent
Starting test: systemlog
......................... SERVER2 passed test systemlog
Starting test: VerifyReferences
......................... SERVER2 passed test VerifyReferences

Running partition tests on : ForestDnsZones
Starting test: CrossRefValidation
......................... ForestDnsZones passed test
CrossRefValidatio

Starting test: CheckSDRefDom
......................... ForestDnsZones passed test CheckSDRefDom

Running partition tests on : DomainDnsZones
Starting test: CrossRefValidation
......................... DomainDnsZones passed test
CrossRefValidatio

Starting test: CheckSDRefDom
......................... DomainDnsZones passed test CheckSDRefDom

Running partition tests on : Schema
Starting test: CrossRefValidation
......................... Schema passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... Schema passed test CheckSDRefDom

Running partition tests on : Configuration
Starting test: CrossRefValidation
......................... Configuration passed test
CrossRefValidation
Starting test: CheckSDRefDom
......................... Configuration passed test CheckSDRefDom

Running partition tests on : kcdee
Starting test: CrossRefValidation
......................... kcdee passed test CrossRefValidation
Starting test: CheckSDRefDom
......................... kcdee passed test CheckSDRefDom

Running enterprise tests on : kcdee.org
Starting test: Intersite
......................... kcdee.org passed test Intersite
Starting test: FsmoCheck
......................... kcdee.org passed test FsmoCheck



EVENT LOG

Event Type: Warning
Event Source: NTDS KCC
Event Category: Knowledge Consistency Checker
Event ID: 1566
Date: 9/12/2005
Time: 3:57:32 PM
User: NT AUTHORITY\ANONYMOUS LOGON
Computer: SERVER2
Description:
All domain controllers in the following site that can replicate the
directory partition over this transport are currently unavailable.

Site:
CN=dekalb,CN=Sites,CN=Configuration,DC=kcdee,DC=org
Directory partition:
CN=Configuration,DC=kcdee,DC=org
Transport:
CN=IP,CN=Inter-Site Transports,CN=Sites,CN=Configuration,DC=kcdee,DC=org

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

[Mr. Boo Bear]

If you think that network connectivity is proper, then it might be a DNS problem. You can point this DC at one of the other DCs for DNS, assuming AD-Integrated DNS here, and then restart Netlogon and then try replicating. If replication is successful, then change DNS back to what it was and try again.

[Agilent]

After trying it I am still facing some issue. I used REPLMON and used it to sync. But after a long time I am getting the below error:

Active Directory Replication Monitor

ERROR_REPLICA_SYNC_FAILED_THE REMOTE PROCEDURE CALL FAILED AND DID NOT EXECUTE.

Thanks

[HELLIAN]

Can you try to run DCDIAG /V /C /E and NETDIAG /V on the problem machine and post any errors that you are getting.

[mauricio]

Check the article made on "How to disable the Knowledge Consistency Checker from automatically creating replication topology" from here - http://support.microsoft.com/?id=242780