Dot1X Guest-Vlan - Cisco Catalyst 3120 Command Reference Manual

Catalyst blade switch 3120 for hp command reference

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dot1x guest-vlan

Use the dot1x guest-vlan interface configuration command on the switch stack or on a standalone switch

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

No guest VLAN is configured.

Command Modes

Interface configuration

Command History

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.

To allow clients that failed authentication access to the network, you can use a restricted VLAN by

entering the dot1x auth-fail vlan vlan-id interface configuration command.

Cisco Catalyst Blade Switch 3120 for HP Command Reference

dot1x guest-vlan vlan-id

no dot1x guest-vlan

Specify an active VLAN as an IEEE 802.1x guest VLAN. The range is 1

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.

Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands