Forum Discussion
I'm going to hedge. If all your F5's are in a single DC, then yes they could (in theory) all know about each other in some incestuous sync group. I could conceive of a configuration where that is true accross DC's (but there's a lot of other things that would need to be in place to make that work).
It seems to me you are looking for something like BigIQ, which would, in theory, manage all your LTMs if centralized management is your primary goal, or integration into some orchestration tool, from which you could manage all your devices.
I have 50-ish F5s deployed accross the globe doing LTM as well as many other modules. We manage them mostly via iApps, CLI and iControl and only sync between members on the same DMZ(s)/VLAN(s) (I have a couple cases where I have seperate DMZ's/VLANs which share the same security zone). You could, in your case where you have 5, have 3 on one DMZ with a traffic group limited to those 3, and another 2 on some other DMZ with traffic groups limited to those devices, but I think you'd run into operation issues unless you have a seriously disciplined organization. I've managed networks for more than 25 years and I've yet to find one of those.