UTStarcom iSpirit 3026 Manual page 99

2. Internation of Protocol Flow
Internation happens between authenticator system and authentication server system through
RADIUS protocol after user sends out his/her authentication request. About Internation of
Protocol Flow of RADIUS accounting packet authenticator system dis-send by authenticator
system please refer to Figure8-4. Generally after authentication or user has left Internet,
authenticator system should send RADIUS accounting packet to authentication server system.
Please refer to Figure 8-7 for Internation of Protocol Flow
iSpirit 3026 authentication server system
Figure 8-7. Internation of Protocol Flow
Switch packs user's name into Access-Reques packet and send to authentication server system
when user is being authenticated, server should response Access-Challenge to request user's
password, switch requests user's password in supplicant system that will pack the password into
EAP, switch will pack the EAP into Access-Request after obtain it and send it to authentication
server system that will make authentication for user, if successful, then send back
Access-Accept to switch that will inform supplicant system it is successful after receive this
packet, meanwhile send Accounting-Request to inform authentication server system to start