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Getting time via NTP from a DC with IAP-105

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  • 1.  Getting time via NTP from a DC with IAP-105

    Posted Mar 20, 2014 05:55 AM

    Hello Everybody,

     

    I am having some problems about getting the time from a Microsoft Domain Controller. The DC is ping-able and other devices like the switch can receive the right time from the DC. The DC-Admin told me, that everything is ok with the DC (this is something outside my influences).

     

    I don't know which information is necessary for you to help me. Here are some basic Information:

     

      * version 6.3.1.0-4.0.0

      * virtual-controller-country PL

      * virtual-controller-ip 172.20.7.195

      * terminal-access

      * ntp-server 172.20.7.237

      * clock timezone Warsaw 01 00

     

    Please tell me which further information you need.

     

    I hope somebody would have the same problem and knows a little hint or some troubleshooting ideas.

     

    Best regards,

     

    Marcel Heß



  • 2.  RE: Getting time via NTP from a DC with IAP-105

    Posted Mar 20, 2014 06:21 AM

    Hi,

    Did u checked the your network allowing NTP connectiviy (not ping...) to the server and from the server to the VC?

    UDP/TCP 123?

     

    Capture.PNG



  • 3.  RE: Getting time via NTP from a DC with IAP-105

    Posted Mar 20, 2014 06:22 AM
    Can u please check with external NTP ?
    here is a list of external NTP servers:
    www.pool.ntp.org/en/


  • 4.  RE: Getting time via NTP from a DC with IAP-105

    Posted Mar 20, 2014 07:56 AM

    Hey kdisc98,

     

    thank you for your quick response.

     

    I will check these things and will give you feedback.

     

    Best regards,

     

    Marcel Heß



  • 5.  RE: Getting time via NTP from a DC with IAP-105

    Posted Apr 04, 2014 09:56 AM

    Hey,

     

    please excuse my late response, I only have limited remote access to the IAPs.

     

    With the above hints the time synchronisation do not work.

     

    I have checked the things you suggested. With the NTP-Server pool.ntp.org the time sync. works without problems. Between the IAPs and the DC is only a switch located with no restrictions. The DC is configured as standalone NTP-Server. After looking into the DC-Firewall logs, it seems, that the IAPs doesn't ask the DC. I have double checked all IP addresses and subnet masks.

     

    I have contacted the Support, they said that there is no problem with the IAP.

     

    Now, I have no idea what to check know or where I can get any further help.

     

    Some other hints or ideas?

     

    Mant thanks in advance!

     

    Best regards,

     

    Marcel

     

    -------

    Edit note: Some refactoring of the posting to make the message clear :smileyhappy: 



  • 6.  RE: Getting time via NTP from a DC with IAP-105
    Best Answer

    Posted Apr 24, 2014 02:34 AM

    Hallo,

     

    I solved the problem. It was a wrong configuration at the domain controller.

     

    Here is the article that helped me to solve the problem:

    https://social.technet.microsoft.com/wiki/contents/articles/15393.ntp-server-for-non-windows-clients.aspx

     

    Best regards,

     

    Marcel Heß