Aruba ClearPass User ACL with Cisco switches?

Hi

I have a question regarding the use of per-user ACL's with Aruba ClearPass. Is this only possible with Aruba switches or will it also work if we have Cisco switches. In this case, ClearPass does not know how to provision Cisco switches and only talks to Cisco switches via RADIUS. I don't see how RADIUS has the mechanism to provision highly granular ACE's, so I am thinking this is user ACL's with ClearPass are not possible if we have Cisco switches. But am I missing something?