How to translate an existing bigip ltm configuration to a more recent version

F5OS is a hypervisor than runs on rSeries appliances.

"BIG-IP TMOS" is the tenant you run inside the hypervisor on rSeries, or on bare metal on iSeries or older platforms, or as a VM on vSphere or KVM, etc.

So to migrate your config from your existing 15.x on iSeries to 15.x on rSeries, you'd typically:

1- Make a UCS backup

2- Deploy a 15.x tenant to F5OS

3- Restore the UCS to the new tenant

More info:

https://clouddocs.f5.com/training/community/rseries-training/html/introduction.html