Nimbostratus
AdminI think he's asking about deterministic response. In theory, the BIND underpinnings of gtmd should allow you to create a view - F5 DNS has used 'external' as the default forever, iirc - to attach a topology to. A topology can be a range - even a /32. Using a view will allow you to administer zone files - and WIPs, etc - that are identical, but only work for the topology that they are attached to.
This should still be somewhat current.. Should at least get you started:
K14421: Achieving split DNS behavior through BIG-IP DNS wide IPs
NimbostratusThanks a lot, exactly as described in K14421. The DNS response needs to be split according to the client IP. But there is a problem: how does F5 define the client IP address range? Does a similar address library exist? I know that there is a regional IP database in AFM, is there one in GTM?
AdminTopolgy. That is how you assign IP ranges. Just make a new topology and attach it to the view. We have customers that use this for data sovereignty all the time. I have worked with an on-line entertainment provider that managed PoP response based on topologies with (then) GTM.