When is a secondary nameserver hit?

Posted by Evan Carroll on Server Fault See other posts from Server Fault or by Evan Carroll
Published on 2010-04-08T16:08:47Z Indexed on 2010/04/08 16:13 UTC
Read the original article Hit count: 259

Filed under:

domain-name

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nameservers

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dns

Take this scenario:

domain: foobar.com
ns1:    2.2.2.2
ns2:    3.3.3.3

My question: Is ns2 hit just in the event that ns1 is down? Or, is ns2 hit any time that ns1 returns a miss/doesn't resolve the query? I know ns2 would be hit if ns1 ever went down; but, what if ns1 is up and just doesn't have the data?

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