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James_Hamoline1's avatar
James_Hamoline1
Icon for Nimbostratus rankNimbostratus
Nov 01, 2005

Running DNS test for failover

I am trying to write an iRule to send a UDP DNS request and interpret the response:

 

 

I's like to pass a DNS request from the F5 to the pool of DNS servers, so if they don't respond with a valid response the F5 can failover to a second pool of cached DNS servers.

 

 

If anyone can help, it'd be appreciated.

 

 

Cheers
application delivery
dev
devops
iRules

1 Reply

  • unRuleY_95363's avatar
    unRuleY_95363
    Historic F5 Account
    Nov 02, 2005
    You should search the forum. I remember there's at least some posts talking about doing LB on DNS and the gotchas you need to look for...