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F5_Freek_243545's avatar
F5_Freek_243545
Icon for Nimbostratus rankNimbostratus
Aug 08, 2017

GTM Question

Hi,

 

We have a set up to resolve wide ip urls abc.makemehappy.com and xyz.makemehappy.com which is forwarding to the downstream LTM big ip. Our DNS is deligated to GTM completely, means*.makemehappy.com should resolve from GTM.

 

Now i have another URL 123.makemehappy.com which needs to resolve from downstream dns servers. Can i configure GTM in a way that any URLs which is nor present in the wide-ip list should forward to other downstream dns servers?

 

Please help.

 

-Freek

 

BIG-IP DNS
devops
    • F5_Freek_243545's avatar
      F5_Freek_243545
      Icon for Nimbostratus rankNimbostratus
      Aug 09, 2017

      Hi Kevin,

       

      This solution creates a listener and forwards to the DNS servers.

       

      My requirement is to resolve the wide-ip in the zone first. If the wide IP doesn't exists, need to forward it to the downstream DNS server. Would this help?

       

    • Kevin_K_51432's avatar
      Kevin_K_51432
      Historic F5 Account
      Aug 09, 2017

      Greetings, In this situation, BIG-IP DNS checks incoming DNS queries and if the query is for a wide IP, resolves the query. Otherwise, BIG-IP DNS forwards the DNS query to one of the servers in a pool of DNS servers, and that server handles the query.

       

      Give it a try and let us know!

       

      Kevin