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DNS and GC Replication in windows 2008 R2

    Question

  • I have a DC with DNS AND GC in domain. When I create additional DC with DNS AND GC in the same domain, these two DNS AND GC are replicated automatically or not?

    (Do I need to set these two DNS and GC replicated manually)

     

    thank you

    Saturday, June 25, 2011 2:01 PM

Answers

All replies

  • Yes, the AD replication is automatically created.  For DNS, if the zone is configured as AD Integrated, it will replicate automatically as well since the DNS infromation is stored in the AD database.  If you create a standard primary zone in DNS, it will not replicated automatically. To "replicate" a standard primary zone, you would create a secondary zone on an additional dNS server to transfer the zone.  For internal DNS zones used for AD, it is recommended to configure the zone as AD Integrated instead of standard primary.

     


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    Saturday, June 25, 2011 3:05 PM
  • Yes, they are replicated automatically and you don't need ro replicate them manually.

    Just make sure that needed ports for AD replication are not blocked.

    The ports: http://technet.microsoft.com/en-us/library/bb727063.aspx

    You can use PortQry v2 to check that.

    Also, you have to make sure that there is no missing DNS records.

    If those are the only DCs that you have then:

    • Make each DC points to the other one as a primary DNS server
    • Make each DC points to its private IP address as secondary DNS server
    • Make each DC points to its loopback IP address as third mentioned DNS server

    Once done, run ipconfig /registerdns and restart netlogon on each DC and all should be okay.

    Note that AD-integrated zones are replicated via AD replication.

     

     

     


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    Saturday, June 25, 2011 3:13 PM
  • Yes, the AD replication is automatically created.  For DNS, if the zone is configured as AD Integrated, it will replicate automatically as well since the DNS infromation is stored in the AD database.  If you create a standard primary zone in DNS, it will not replicated automatically. To "replicate" a standard primary zone, you would create a secondary zone on an additional dNS server to transfer the zone.  For internal DNS zones used for AD, it is recommended to configure the zone as AD Integrated instead of standard primary.

     


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    Thank you for your reply.

    but I don't know how to create a standard primary zone and secondary zone  for DNS in windows 2008 R2

    (This standard primary zone will be added as a member of domain and make sure we don't use the DNS server of DC)

    Please give the details

     

     

     

    Sunday, June 26, 2011 2:40 AM
  • Sunday, June 26, 2011 5:41 AM
  • GC replication is automatic with AD where as for DNS it will replicate to all the DNS only if AD-Integrated & replication scope is set. Primary DNS zones are writable DNS zone & they do not replicated to other DNS server automatically but they are required to configure zone transfer to other server containing dns service. Secondary DNS zone are read only zone where you can't direct update the records but only primary where zone transfer has been configure can do it.

    The below article applies to windows 2008 R2 too.

    How do I... Install and configure a DNS server in Windows Server 2008

    http://www.techrepublic.com/blog/datacenter/how-do-i-install-and-configure-a-dns-server-in-windows-server-2008/327

    http://technet.microsoft.com/en-us/library/cc725925.aspx

    http://www.zdnetasia.com/install-a-dns-server-in-windows-server-2008-62040433.htm

     

    Regards  


    Awinish Vishwakarma| CHECK MY BLOG

    Disclaimer: This posting is provided AS-IS with no warranties or guarantees and confers no rights.

    Sunday, June 26, 2011 7:34 AM
    Moderator
  • @ Lee....the best option is to make sure that your internal DNS zones are set to Active Directory integrated.  This option provides better security for the zone, and no need to worry about zone transfers.  Since the zone is stored in AD, normal AD replication takes care of DNS replication for you.

     


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    Sunday, June 26, 2011 9:25 PM