Detailed explanation of WiFi 802.1x authentication process

  Please Notes we need setup a tunnel server to triger the 802.1x client comminute with Radius server.  now we used GRE for tunnel server.   the GRE server also provide the DHCP server for 802.1x client.   radius server only provide authentication and account function.

# Radius and GRE Reference Packet Trace ,pleae refer this link

   https://download.csdn.net/download/sdc20102010/82032711

use "radius " to filter the radius connect and disconnect packet.   do not use the "eap" item to filter it. 
  
Connect: 
   Client send                                        Radius server
            Access Request    ->               
                                               <-                Access challenge     
            Access Request    ->                  
                                              <-                Access accept 
            Accounting  Request  ->    
                                                  <-             Accounting Response

Disconnect:
           Accounting  Request  ->    
                                                  <-             Accounting Response