If you’ve got a hard time finding a cacti profile for the F5 Bigip version 9, then checkout the Cacti Forum. Don’t follow thru on the regular template links, as you’ll end up with templates that won’t work.
F5 BigIP version 9 & Cacti
The insights of a Quirky Tech Enthousiast on his journey through the fast paced IT landscape.
Check out the following post, which handles the above in detail:
http://www.kvaes.be/f5/monitoring-your-ltmbigip-through-cacti/