Enable Re-Authentication
Specifies whether to enable periodic online user re-authentication on the
port.
Periodic online user re-authentication tracks the connection status of online
users and updates the authorization attributes assigned by the server, such as
the ACL, and VLAN. The re-authentication interval is specified by the
Re-Authentication Period setting in Table 104.
NOTE:
• The periodic online user re-authentication timer can also be set by the
authentication server in the session-timeout attribute. The server-assigned
timer overrides the timer setting on the access device, and it enables
periodic online user re-authentication, even if the function is not
configured on the access device. Support for the server assignment of
re-authentication timer and the re-authentication timer configuration on
the server vary with servers.
• The VLAN assignment status must be consistent before and after
re-authentication. If the authentication server has assigned a VLAN before
re-authentication, it must also assign a VLAN at re-authentication. If the
authentication server has assigned no VLAN before re-authentication, it
must not assign one at re-authentication. Violation of either rule can cause
the user to be logged off. The VLANs assigned to an online user before
and after re-authentication can be the same or different.
Guest VLAN
Specifies an existing VLAN as the guest VLAN.
For more information, see "Configuring an 802.1X guest VLAN."
Enable MAC VLAN
Specifies whether to enable MAC-based VLAN.
Required when MAC Based is selected for Port Control.
NOTE:
Only hybrid ports support the feature.
Auth-Fail VLAN
Specifies an existing VLAN as the Auth-Fail VLAN to accommodate users that
have failed 802.1X authentication.
For more information, see "Configuring an Auth-Fail VLAN."
Configuring an 802.1X guest VLAN
Configuration prerequisites
• Create the VLAN to be specified as the 802.1X guest VLAN.
• If the 802.1X-enabled port performs MAC-based access control, configure the port as a hybrid port,
enable MAC-based VLAN on the port, and assign the port to the 802.1X guest VLAN as an
untagged member.
Configuration guidelines
• The 802.1X guest VLANs on different ports can be different.
• Assign different IDs to the port VLAN and the 802.1X guest VLAN on a port, so the port can
correctly process incoming VLAN tagged traffic.
• With 802.1X authentication, a hybrid port is always assigned to a VLAN as an untagged member.
After the assignment, do not reconfigure the port as a tagged member in the VLAN.
• Use Table 106 w
hen you configure multiple security features on a port.
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