Use GTM Cluster for internal recursive name resolution
Hi Everyone,
I have been trying to set up what I would think would be a fairly normal configuration.
I have a pair of F5 GTM's running 11.3 running as authoritative name servers for a few domains we own. That part is working flawlessly. The part that I don't seem to be able to get working is that I would like to be able to point the machine inside my network to the floating INTERNAL IP of the GTM cluster for recursive name resolution for everything (my local domains as well as global).
I have tried turning on "recursion" in the named.conf (and restricting it to my local networks with an acl), and I've tried setting up a listener with an internal IP address, and the F5 document, "Replacing a DNS Server with BIG-IP GTM" (http://support.f5.com/kb/en-us/products/big-ip_gtm/manuals/product/gtm-implementations-11-1-0/3.html)...but nothing has worked.
It really shouldn't be that hard, right? It seems like it should be a fairly straightforward setup, but I cannot seem to figure it out.
Does anyone have any pointers?
Thanks in advance!
-Emmett
You can assign your listener address to whatever you want from that internal vlan. It doesn't have to be a floating IP address, but it can be. In the DNS profile you attached to your listener, did you enable 'Use BIND Server on BIG-IP'? Since you defined recursion through named, it'll need to be able to use BIND.
If locally issued GTM queries can't recurse out to the Internet, then it could be something is preventing it from getting out, like a firewall.