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neil_t_66364's avatar
neil_t_66364
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Feb 26, 2015
Solved

How to setup DNS resolution on GTM

Hi All, I know this may sound simple but I'm having a mind-block on how to setup the gtm to act as a DNS server. I've created two pairs of GTMs, each pair being HA sync'd and all four running gtm sy...
BIG-IP DNS
deployment
Brad_Parker_139's avatar
Brad_Parker_139
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If you've added your LTMs into the GTMs as servers you should then be able to start creating pools for your wideIPs using the virtual server contained on your LTM "server"(GTM context) provided you have checked auto discover. You then associated your pools with the appropriate wideIPs. If your GTM will be hosting the whole zone that your wideIPs live in you will probably also need to either setup the zone in ZoneRunner or use an off box DNS server that will be used for a DNS-Express zone to act as an authoritative slave for. Below are some links to some helpful information.

 

https://devcentral.f5.com/articles/v11-dns-express-ndash-part-1 https://support.f5.com/kb/en-us/products/big-ip_gtm/manuals/product/gtm-concepts-11-5-0/4.html

 

Brad_Parker_139's avatar
Brad_Parker_139
Icon for Nacreous rankNacreous
Feb 27, 2015
If you have to have your public NATs at the firewall rather than on the LTMs you will need to create your servers/virtual servers on the GTM by hand, you will not be able to use autodiscover. You then add that virtual server to a pool and associate that pool with the appropriate Wide IP. Wide IP always respond as authoritative repsonders, they are not a pool of DNS servers. This SOL should help clarify this as well. https://support.f5.com/kb/en-us/solutions/public/14000/700/sol14707.html