Thursday, May 14, 2020

Secondary DNS for sub-offices

Not sure if this is just network equipment, but this is generally the best group for answers.

So we are revamping our network.
We have a dozen or so sub-offices, a couple will have RODC, but the rest wont.
They are all domain joined, and WAN links are over MPLS or VPN.

I am wondering how to set it up so that if the Primary DNS server at head office fails, the sub-offices will still be able to connect to the internet.

I'm pretty sure the behavior of windows 10 DNS is that after a failover to the secondary, it will remain on that secondary until a reboot, or until the secondary fails. Either way, I have had a multitude of problems in the past by using the windows client secondary DNS pointing to anything other than a DC



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