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DHCP Failover:The server detected that it is out of time synchronization with partner server: RRS feed

  • Question

  • Morning guys,

    I am trying to find a solution for a DHCP servers of mine that is showing several error messages in the event viewer like these:

    The server detected that it is out of time synchronization with partner server: REMOTESERVER-HOSTNAME for failover relationship: LOCALSERVER-REMOTESERVER.  The time is out of sync by: 3602 seconds .

    After a few seconds, the event viewer shows that the error is fixed:

    Server has established contact with failover partner server REMOTE-SERVER for relationship LOCALSERVER-REMOTESERVER

    I have tons of DHCP FAILOVER realtions with the REMOTESERVER. More than 20 DHCP Servers are actually working fine and this is the only partner server that is sending out these error messages.

    The LOCALSERVER is also a DC and there's no error in the time configuration or the time zone.

    Does this ring any bells to you guys ? Thanks


    Regards

    Tuesday, March 13, 2018 1:26 PM

All replies

  • Hi Selva,

    Thanks for your question.

    This issue happened with event ID 20253 when the DHCP server detected that it is out of time synchronization with its partner server.

    In DHCP failover, whenever one of the server responds with an ACK to a client request, the same is updated in the database of the DHCP server with a timestamp and is sent to the partner for synchronization. This timestamp is at granularity of a second. If the partner server receives two synchronization updates from the other DHCP server with the same timestamp, it will reject the second request.

    If the second request from the  client is a release request then this causes the failover servers to go out of sync as the partner server will reject the synchronization update but the first server (which received the client request) will apply the update to its database.

    Please try the following article and update the corresponding hotfixes on DHCP server.

    https://blogs.technet.microsoft.com/teamdhcp/2014/02/24/dhcp-failover-fixes-in-kb-2919393-for-windows-server-2012-and-kb-2919355-for-windows-server-2012-r2/

    Update for Windows Server 2012 (KB2919393)

    https://www.microsoft.com/en-us/download/details.aspx?id=41792

    Windows Server 2012 R2 Update (KB2919355)

    https://www.microsoft.com/en-us/download/details.aspx?id=42334

    Hope above information helpful.

    Highly appreciate your effort and time. If you have any questions and concerns, please feel free to let me know.

    Wish you have a nice day!

    Best regards, 

    Michael


    Please remember to mark the replies as an answers if they help.
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    Wednesday, March 14, 2018 5:09 AM
  • Hi Selva,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    Wish you have a nice weekend!

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Friday, March 16, 2018 9:33 AM
  • Hi Michael,

    I was busy on other things and I didn't have time to look at this issue. I have noticed that other DHCP servers are affected from the same issues^.

    I have checked the servers and the hotfix has been applied on April 2014

    Thanks for you help

    Regards



    • Edited by Selva_MSN Monday, March 19, 2018 7:00 AM
    Monday, March 19, 2018 6:54 AM
  • Hi Selva,

    Thanks for your update.

    I will follow up this case and stand by with you. If you have any updates during this process, please feel free to let me know.

    Thank you very much for sharing here. Highly appreciate your successive effort and time.

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Monday, March 19, 2018 9:57 AM
  • Hi Selva,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    Wish you have a nice weekend!

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Friday, March 23, 2018 9:54 AM
  • Hi Selva,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    If you resolved it using our solution, please "mark it as answer" to help other community members find the helpful reply quickly.

    Wish you have a nice day!

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Monday, March 26, 2018 9:41 AM
  • Hi Selva,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    Wish you have a nice day!

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Wednesday, March 28, 2018 9:17 AM
  • Hi, no news yet. I will let you know as soon as I can

    Thanks

    Tuesday, April 3, 2018 8:46 AM
  • Hi Selva,

    Thanks for your update.

    I will follow this thread and stand by with you. If you have any updates during this process, please feel free to let me know.

    Highly appreciate your effort and time.

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Friday, April 6, 2018 10:47 AM
  • Hi Selva,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Thursday, May 10, 2018 11:47 AM