GTM Setup question with HA design

When you create the listener, you'll see it's just a VIP that gets created. That VIP will be in the traffic group that fails over between the two devices. You could also have it use the destination IP of the floating IP if you're short on IPs but typically you'd give it it's own IP.

You could also create the listeners on the local traffic group for each device and have LTM VIPs failover between the two and have the GTM listeners always be active.

Honestly if you could do vCMP and separate them out, or have separate devices you'll be happier in the long run. Combining GTM and LTM gets messy in my experience, as you're finding out trying to architect this.

--D