setup as
Auto
, only the Wireless clients supporting the 802.1x client can access the
network.
Re-Authentication
The administrator can enable periodic 802.1x client re-authentication and specify
how often it occurs. When the re-authentication is time runs out, the authenticator
will send the EAP-Request/Identity to reinitiate the authentication process. In the
ZyXEL Wireless AP 802.1x implementation, if you do not specify a time period before
enabling the re-authentication, the period between re-authentication attempts is
1,800 seconds (30 minutes).
EAPOL (Extensible Authentication Protocol over LAN)
The authenticators and supplicants communicate with one another by using the
Extensible Authentication Protocol (EAP and RFC-2284). The EAP was originally
designed to run over PPP and to authenticate the dial-in users, but the 802.1x
defines an encapsulation method for passing the EAP packets over Ethernet frames.
This method is referred to as the
EAP over LANs, or EAPOL
. Ethernet type of EAPOL
is
88-8E
, two octets in length. The EAPOL encapsulations are described for IEEE 802
compliant environment, such as the 802.3 Ethernet, 802.11 Wireless LAN and Token
Ring/FDDI.
The EAP protocol can support multiple authentication mechanisms, such as
MD5-challenge, One-Time Passwords, Generic Token Card, TLS and TTLS etc.
Typically, the authenticator will send an initial Identity Request followed by one or
more Requests for authentication information. When the supplicant receives the
EAP request, it will reply with the associated EAP response. So far, the ZyXEL
