Cisco Identity Service Engine (ISE) is a new trend in the network security industry. It is a RADIUS server that provides granular control for access, profiling and authorization, using 802.1x. Since it is not only a security product but also a infrastructure management solution of some kind, it would be awesome to have NPM to monitor the ISE deployment natively, the same ways it does for the WLC.
For more information about the solution: Cisco Identity Services Engine (this links need a small refresh to represent the new features in v1.2 and the new appliances).