Dot1X Guest-Vlan - Cisco WS-C3560E-24PD-E Command Reference Manual

Chapter 2 Catalyst 3560 Switch Cisco IOS Commands

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
12.1(19)EA1
12.2(25)SE
12.2(25)SEC
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 currently running IEEE 802.1x. 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.
Before Cisco IOS Release 12.2(25)SE, the switch did not maintain the EAPOL packet history and
allowed clients that failed authentication access to the guest VLAN, regardless of whether EAPOL
packets had been detected on the interface. You can use the dot1x guest-vlan supplicant global
configuration command to enable this optional behavior.
78-16405-05
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.
This command was modified to change the default guest VLAN behavior.
The usage guidelines were modified.
A static-access port that belongs to a non-private 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, regardless whether the posture validation was
successful. The switch determines the primary private VLAN by using the primary- and
secondary-private-VLAN associations on the switch.
Catalyst 3560 Switch Command Reference
dot1x guest-vlan
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