Dot1X Guest-Vlan - Cisco 3020 - Catalyst Blade Switch Command Reference Manual

dot1x guest-vlan

dot1x guest-vlan
Use the dot1x guest-vlan interface configuration command to specify an active VLAN as an
IEEE 802.1x guest VLAN. Use the no form of this command to return to the default setting.
Syntax Description vlan-id
Defaults No guest VLAN is configured.
Command Modes Interface configuration
Command History Release
12.2(25)SEF
Usage Guidelines You can configure a guest VLAN on one of these switch ports:
•
•
For each IEEE 802.1x port on the switch, you can configure a guest VLAN to provide limited services
to clients (a device or workstation connected to the switch) not running IEEE 802.1x authentication.
These users might be upgrading their systems for IEEE 802.1x authentication, and some hosts, such as
Windows 98 systems, might not be IEEE 802.1x-capable.
When you enable a guest VLAN on an IEEE 802.1x port, the switch assigns clients to a guest VLAN
when it does not receive a response to its Extensible Authentication Protocol over LAN (EAPOL)
request/identity frame or when EAPOL packets are not sent by the client.
The switch maintains the EAPOL packet history. If another EAPOL packet is detected on the interface
during the lifetime of the link, the guest VLAN feature is disabled. If the port is already in the guest
VLAN state, the port returns to the unauthorized state, and authentication restarts. The EAPOL history
is reset upon loss of link.
Any number of non-IEEE 802.1x-capable clients are allowed access when the switch port is moved to
the guest VLAN. If an IEEE 802.1x-capable client joins the same port on which the guest VLAN is
configured, the port is put into the unauthorized state in the RADIUS-configured or user-configured
access VLAN, and authentication is restarted.
Guest VLANs are supported on IEEE 802.1x ports in single-host or multiple-hosts mode.
Cisco Catalyst Blade Switch 3020 for HP Command Reference
2-68
dot1x guest-vlan vlan-id
no dot1x guest-vlan
Specify an active VLAN as an IEEE 802.1x guest VLAN. The range is 1
to 4094.
Modification
This command was introduced.
A static-access port that belongs to a nonprivate VLAN.
A private-VLAN port that belongs to a secondary private VLAN. All the hosts connected to the
switch port are assigned to private VLANs, whether or not the posture validation was successful.
The switch determines the primary private VLAN by using the primary- and
secondary-private-VLAN associations on the switch.
Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands
OL-8916-01