So my real end question is, does there need to be a seperate "F5 Network" for each "public" network we have, production (then an F5 Production network), pre-production (then a corresponding F5 pre-production network) or can the F5s each have one address is that same subnet and load balance the pool down to the servers?it is not mandatory to separate external and internal vlan/subnet. virtual server and pool can be in the same vlan/subnet but you may have to enable snat to make sure return traffic coming to bigip. the following article might be helpful.
Quick Start: Application Delivery Fundamentals by josh
https://devcentral.f5.com/tech-tips/articles/quick-start-application-delivery-fundamentals
Nimbostratus
