HP 6125G Configuration Manual page 85

With 802.1X authentication, a hybrid port is always assigned to a VLAN as an untagged member. After
the assignment, do not re-configure the port as a tagged member in the VLAN.
On a periodic online user re-authentication enabled port, if a user has been online before you enable the
MAC-based VLAN function, the access device does not create a MAC-to-VLAN mapping for the user
unless the user passes re-authentication and the VLAN for the user has changed.
Guest VLAN
You can configure a guest VLAN on a port to accommodate users that have not performed 802.1X
authentication, so they can access a limited set of network resources, such as a software server, to
download anti-virus software and system patches. After a user in the guest VLAN passes 802.1X
authentication, it is removed from the guest VLAN and can access authorized network resources. The
way that the network access device handles VLANs on the port differs by 802.1X access control mode.
For more information about VLAN configuration and MAC-based VLAN, see Layer 2
Configuration Guide.
On a port that performs port-based access control
1.
Authentication status
No 802.1X user has
performed authentication
within 90 seconds after
802.1X is enabled
A user in the 802.1X guest
VLAN fails 802.1X
authentication
A user in the 802.1X guest
VLAN passes 802.1X
authentication
On a port that performs MAC-based access control
2.
To use the 802.1X guest VLAN function on a port that performs MAC-based access control, make sure
that the port is a hybrid port, and enable MAC-based VLAN on the port.
Authentication status
A user has not passed 802.1X
authentication yet
A user in the 802.1X guest
VLAN fails 802.1X
authentication
VLAN manipulation
Assigns the 802.1X guest VLAN to the port as the PVID. All 802.1X users on
this port can access only resources in the guest VLAN.
If no 802.1X guest VLAN is configured, the access device does not perform
any VLAN operation.
If an 802.1X Auth-Fail VLAN (see
Auth-Fail VLAN to the port as the PVID. All users on this port can access only
resources in the Auth-Fail VLAN.
If no Auth-Fail VLAN is configured, the PVID on the port is still the 802.1X
guest VLAN. All users on the port are in the guest VLAN.
•
Assigns the VLAN specified for the user to the port as the PVID, and
removes the port from the 802.1X guest VLAN. After the user logs off, the
user configured PVID restores.
•
If the authentication server assigns no VLAN, the user-configured PVID
applies. The user and all subsequent 802.1X users are assigned to the
user-configured port VLAN. After the user logs off, the PVID remains
unchanged.
VLAN manipulation
Creates a mapping between the MAC address of the user and the 802.1X
guest VLAN. The user can access resources in the guest VLAN.
If an 802.1X Auth-Fail VLAN is available, re-maps the MAC address of the
user to the Auth-Fail VLAN. The user can access only resources in the Auth-Fail
VLAN.
If no 802.1X Auth-Fail VLAN is configured, the user is still in the 802.1X guest
VLAN.
75
"Auth-Fail VLAN") is available, assigns the
LAN Switching
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