ZyXEL Communications XGS3600 Series Manual page 283

ports' ditto setting determine whether RADIUS-assigned VLAN is enabled on that port.
When unchecked, RADIUS-server assigned VLAN is disabled on all ports.
Guest VLAN Enabled :

A Guest VLAN is a special VLAN - typically with limited network access - on which 802.1X-
unaware clients are placed after a network administrator-defined timeout. The switch
follows a set of rules for entering and leaving the Guest VLAN as listed below.
The "Guest VLAN Enabled" checkbox provides a quick way to globally enable/disable
Guest VLAN functionality. When checked, the individual ports' ditto setting determines
whether the port can be moved into Guest VLAN. When unchecked, the ability to move to
the Guest VLAN is disabled on all ports.
Guest VLAN ID :

This is the value that a port's Port VLAN ID is set to if a port is moved into the Guest VLAN.
It is only changeable if the Guest VLAN option is globally enabled.
Valid values are in the range [1; 4094].
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 :

The table has one row for each port on the selected switch in the stack and a number of
columns, which are:
Port :

The port number for which the configuration below applies.
Admin State :

If NAS is globally enabled, this selection controls the port's authentication
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 is 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 is 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
XGS3600 Series User's Guide
276
mode. The