It might be possible to run an ACME client on another host in your environment. (IMHO, the DNS-01 challenge is very useful for this.) Then you can (probably) transfer the cert+key to BIG IP, and activate it, via the REST API.

I haven’t used BIG IP in a long while, so take this with a grain of salt, but it seems to me that it might not be impossible to get something going – despite the fact that BIG IP itself doesn’t have native support for ACME.

Two pointers that might be of interest:

https://community.f5.com/discussions/technicalforum/upload-l...

https://clouddocs.f5.com/api/icontrol-rest/APIRef_tm_sys_cry...

F5 sells expensive boxes intended for larger installations where you can afford not to do ACME in the external facing systems.

Giving the TLS endpoint itself the authority to manage certificates kind of weakens the usefulness of rotating certificates in the first place. You probably don't let your external facing authoritative DNS servers near zone key material, so there's no reason to let the external load balancers rotate certificates.

Where I have used F5 there was never any problem letting the backend configuration system do the rotation and upload of certificates together with every other piece of configuration that is needed for day to day operations.

Exactly. According to posters here you should just throw them away and buy hardware from a vendor who does. >sigh<

Don't expect firmware / software updates to enable ACME-type functionality for tons of gear. At best it'll be treated as an excuse by vendors to make Customers forklift and replace otherwise working gear.

Corporate hardware lifecycles are longer than the proposed timeline for these changes. This feels like an ill thought-out initiative by bureaucrats working in companies who build their own infrastructure (in their white towers). Meanwhile, we plebs who work in less-than-Fortune 500 companies stuck with off-the-shelf solutions will be forced to suffer.

F5 is the pain.