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Would this setup of DNS on DCs work? RRS feed

  • Question

  • Hi,


    I'm planning to reconfigure our DNS settings on all Domain Controllers across 2 data centres as well as remote sites as they're currently not set up properly (DNS pointing everywhere).


    Just wanted to run the below setup by everyone and see if what I have planned is OK according to the best practice.


    Data centre 1 (Primary)


    DC1 - Primary DNS points to DC2, Secondary DNS points to itself using loopback address

    DC2 - Primary DNS points to DC1, Secondary DNS points to itself using loopback address


    Data centre 2 (Backup)


    DC1 - Primary DNS points to DC1 in data centre 1, Secondary DNS points to DC2 in data centre 1, Tertiary DNS points to DC2 (same site), Quaternary DNS points to itself using loopback address

    DC2 - Primary DNS points to DC1 in data centre 1, Secondary DNS points to DC2 in data centre 1, Tertiary DNS points to DC1 (same site), Quaternary DNS points to itself using loopback address


    Each remote site


    DC1 - Primary DNS points to DC1 in data centre 1, Secondary DNS points to DC2 in data centre 1, Tertiary DNS points to DC1 in data centre 2, Quaternary DNS points to DC2 in data centre 2, Quinary DNS points to itself using loopback


    I'm not too sure if Tertiary and Quaternary DNS for data centre 1 should be pointing to DCs in data centre 2?


    Please advise if you see this setup would work.


    Thanks.

    Thursday, October 18, 2018 6:10 AM

Answers

  • No you can put the IP of DCs in data centre 2 for secondary and tertiary and use loopback address for quaternary, like that you will be sure that when you reboot any of your DCs they will be able to reach a DC/DNS

    Best Regards,

    • Marked as answer by Jamec23 Sunday, December 16, 2018 11:28 PM
    Friday, October 19, 2018 7:18 AM

All replies

  • Hello,

    If your primary and backup Data centre are in active/active mode you should configure tertiary and quaternary DNS for data centre 1 to DCs in Data centre 2

    Best Regards,

    Thursday, October 18, 2018 8:30 AM
  • Thanks for your reply.

    Instead of having loopback address for secondary DNS, would it be OK to use IP of DCs in data centre 2 for secondary and tertiary DNS, and use loopback address for quaternary? Or would this setup be inefficient?

    Thanks.

    Friday, October 19, 2018 12:03 AM
  • No you can put the IP of DCs in data centre 2 for secondary and tertiary and use loopback address for quaternary, like that you will be sure that when you reboot any of your DCs they will be able to reach a DC/DNS

    Best Regards,

    • Marked as answer by Jamec23 Sunday, December 16, 2018 11:28 PM
    Friday, October 19, 2018 7:18 AM