Pre & Post validation of F5 configuration

This can be a bit tricky to compare like to like because depending on what happens in the upgrade some default configuration can change, and some configuration options are added. I think your best bet is to have some solid testing for each virtual server on that vCMP guest. I'm sure something exists out there that would allow you to make a query and compare the two configs but I'm not aware of anything off the top of my head.