Avaya AP-4 User Manual page 197

Security
Figure 4-12. RADIUS Authentication Illustrated
The AP acts as a pass-through device to facilitate communications
between the client PC and the RADIUS server. The AP (2) and the client
(1) exchange 802.1x messages using an EAPOL (EAP Over LAN)
protocol (A). Messages sent from the client station are encapsulated by
the AP and transmitted to the RADIUS (3) server using EAP extensions
(B).
4-102 Avaya Wireless AP-4/5/6 User's Guide