HP 10500 Series Configuration Manual page 91

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.
For more information about VLAN configuration and MAC-based VLAN, see Layer 2
Configuration Guide.
VLAN group assignment
Use VLAN group assignment to balance users across several VLANs.
VLAN group assignment allows the authentication server to assign a VLAN group to the access device
for an 802.1X user. From this VLAN group, the device picks a VLAN for the 802.1X user in the following
order:
1. Selects the VLAN that has the fewest number of online 802.1X users.
If a port performs port-based access control, all 802.1X users attached to the port are counted as
one user.
If two VLANs have the same number of 802.1X users, the device selects the VLAN with the lower
2.
ID.
Guest VLAN
You can configure a guest VLAN on a port to accommodate users who 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. Once 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.
1. On a port that performs port-based access control
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
2. On a port that performs MAC-based access control
Authentication status
A user has not passed
802.1X authentication yet
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 port VLAN 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.
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"Auth-Fail VLAN") is available, assigns the
LAN Switching
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