Primary and Secondary dns working

Question

We have Primary and Secondary dns setup in our domain. I have question how does the dns work when we have primary and secondary dns configured does the query response is load shared by the both the dns or will primary only query to user response and secondary will come in to picture when primary is unavailable .Need more understanding on it

Answer 1

Hi,

Have a read of this post which is asking a similar question.

https://learn.microsoft.com/en-us/answers/questions/622012/need-help-to-understand-when-windows-laptoppc-send.html

Gary.

Answer 2

Every computer is set up with a primary, or preferred DNS server address, usually the default DNS address given by your Internet service provider, and some are also set up with an alternate, or secondary DNS address that can be used if the preferred DNS fails.

Secondary DNS service affords you an extra set of authoritative nameservers to answer queries for your domain. The information that is stored on both nameservers is identical. Secondary DNS allows your domain zone file to be backed up automatically and stored as a copy on a secondary server.

Primary DNS Server: A Primary DNS Server is a server holds the Primary Zone file which it has authority. Primary Zone file is a Read-Write copy of DNS Zone file. Resource Records for the Zone are created, updated and maintained, in Primary Zone file.

Secondary DNS Server: A Secondary DNS Server is a server that holds the Secondary Zone file, which is a Read-Only copy of the Primary Zone file. It is not possible to create or update Resource Records in a Secondary Zone.

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