User`s guide

VigorSwitch P2261 User’s Guide
186
Max. Reauth. Count The number of times the switch transmits an EAPOL
Request Identity frame without response before considering
entering the Guest VLAN is adjusted with this setting. The
value can only be changed if the Guest VLAN option is
globally enabled.
Valid values are in the range [1; 255].
Allow Guest VLAN if
EAPOL Seen
The switch remembers if an EAPOL frame has been
received on the port for the life-time of the port. Once the
switch considers whether to enter the Guest VLAN, it will
first check if this option is enabled or disabled. If disabled
(unchecked; default), the switch will only enter the Guest
VLAN if an EAPOL frame has not been received on the
port for the life-time of the port. If enabled (checked), the
switch will consider entering the Guest VLAN even if an
EAPOL frame has been received on the port for the
life-time of the port.
The value can only be changed if the Guest VLAN option is
globally enabled.
Port Configuration
Port The port number for which the configuration below applies.
Admin State If NAS is globally enabled, this selection controls the port's
authentication mode. The following modes are available:
Force Authorized - In this mode, the switch will send one
EAPOL Success frame when the port link comes up, and
any client on the port will be allowed network access
without authentication.
Force Unauthorized - In this mode, the switch will send one
EAPOL Failure frame when the port link comes up, and any
client on the port will be disallowed network access.
Port-based 802.1X - In the 802.1X-world, the user is called
the supplicant, the switch is the authenticator, and the
RADIUS server is the authentication server. The
authenticator acts as the man-in-the-middle, forwarding
requests and responses between the supplicant and the
authentication server. Frames sent between the supplicant
and the switch are special 802.1X frames, known as EAPOL
(EAP Over LANs) frames. EAPOL frames encapsulate EAP
PDUs (RFC3748). Frames sent between the switch and the
RADIUS server are RADIUS packets. RADIUS packets
also encapsulate EAP PDUs together with other attributes
like the switch's IP address, name, and the supplicant's port
number on the switch. EAP is very flexible, in that it allows
for different authentication methods, like MD5-Challenge,
PEAP, and TLS. The important thing is that the
authenticator (the switch) doesn't need to know which
authentication method the supplicant and the authentication
server are using, or how many information exchange frames
are needed for a particular method. The switch simply
encapsulates the EAP part of the frame into the relevant
type (EAPOL or RADIUS) and forwards it.
When authentication is complete, the RADIUS server sends