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Windows DNS Server

Whitney Kenny 236 Reputation points
2021-12-09T01:14:47.24+00:00

I have a Domain controller at 2 different sites with 2 different subnets. My goal is to have a primary DNS and a secondary DNS between sites. I've pointed each server to each other. The DNS address were also added to the Cisco router to be distributed to clients dynamically. The clients are receiving the address. But when I turn off the primary DNS server the secondary domain controller does not take over. If the primary domain controller is running and I statically assign the secondary address, there is no issue. But when the primary is offline nothing works. what can possibly be the issue here ?

Windows for business | Windows Server | User experience | Other
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  1. Anonymous
    2021-12-09T02:59:31.853+00:00

    Each domain controller should have own static ip address, loopback (127.0.0.1) and optionally another domain controller's static ip address listed for DNS. DHCP server should hand out both domain controllers addresses for DNS. Also check the required ports are flowing between networks.
    https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/config-firewall-for-ad-domains-and-trusts#windows-server-2008-and-later-versions
    https://www.microsoft.com/en-us/download/details.aspx?id=24009

    --please don't forget to upvote and Accept as answer if the reply is helpful--

    1 person found this answer helpful.
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  2. Whitney Kenny 236 Reputation points
    2021-12-09T03:15:20.597+00:00

    There is no loop back address in my current setup. In which order should the loop back address be placed?
    Should it be placed after the primary address ?

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  3. Anonymous
    2021-12-09T03:17:10.987+00:00

    I'd put the server's own static as primary, loopback secondary and others below this.

    --please don't forget to upvote and Accept as answer if the reply is helpful--

  4. Anonymous
    2021-12-09T03:21:46.16+00:00

    Read on here.
    https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/ff807362(v=ws.10)?redirectedfrom=MSDN

    --please don't forget to upvote and Accept as answer if the reply is helpful--

  5. Anonymous
    2021-12-09T13:23:42.337+00:00

    Please run;

    Dcdiag /v /c /d /e /s:%computername% >C:\dcdiag.log
    repadmin /showrepl >C:\repl.txt
    ipconfig /all > C:\dc1.txt
    ipconfig /all > C:\dc2.txt
    ipconfig /all > C:\dc3.txt
    ipconfig /all > C:\problemworkstation.txt

    then put unzipped text files up on OneDrive and share a link.

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