I be going to that do AAA and Radius works independently , or AAA server must be present for Radius to work ...
Explain the exact flow ..
Thank you
Answers:
RADIUS is a protocol that handle the communication between a Network Access Server (NAS) and an authentication, authorization, and accounting (AAA) server. A remote user make a nouns to the NAS. The NAS uses the RADIUS protocol to elapse the user's credentials to the AAA server. The AAA server uses the RADIUS protocol to respond to the NAS. The NAS later permit access base on the AAA server's response. Here is HP's detailed review of RADIUS:
http://www.docs.hp.com/en/t1428-90026/ch...
I hope this answers your request for information.