Link Controller and VPN

Hi All!

 

I am a novice in f5. To have such a scheme: central office - the two modem (ISP) after the Cisco ASA with VPN and more OCS. additional offices in the same modem, and Cisco ASA VPN. Organized VPN between headquarters and the supplemental. My challenge to introduce this scheme in the Link Controller, without adding other devices, is it possible?