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Xi_Wang_97546's avatar
Xi_Wang_97546
Icon for Nimbostratus rankNimbostratus
Jul 09, 2007

Can GTM redirect DNS requests to external host?

Hi,     I am new to F5 BIG-IP equipment and the iRule scripting. Could someone here tell me what I am trying to do is possible?     My GTM controls 2 LTMs to response to HTTP requests on w...
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PodQueen_107490's avatar
PodQueen_107490
Historic F5 Account
Jul 09, 2007
Hello,

 

 

To have your backup DNS server answer the DNS request, you will want to use the cname command. Also, instead of using the DNS_REQUEST command which runs before the wide IP looks at the pools available, check out the LB_FAILED command.

 

 

In your testing, you should see the cname returned with the dig requests. If not, make sure the iRule is associated with a wide IP?

 

 

Thanks.