Cisco Catalyst 2960 Command Reference Manual page 94

dot1x guest-vlan
After you configure a guest VLAN for an IEEE 802.1x port to which a DHCP client is connected, you
might need to get a host IP address from a DHCP server. You can change the settings for restarting the
IEEE 802.1x authentication process on the switch before the DHCP process on the client times out and
tries to get a host IP address from the DHCP server. Decrease the settings for the IEEE 802.1x
authentication process (dot1x timeout quiet-period and dot1x timeout tx-period interface
configuration commands). The amount to decrease the settings depends on the connected IEEE 802.1x
client type.
Examples
This example shows how to specify VLAN 5 as an IEEE 802.1x guest VLAN:
Switch(config-if)# dot1x guest-vlan 5
This example shows how to set 3 as the quiet time on the switch, to set 15 as the number of seconds that
the switch waits for a response to an EAP-request/identity frame from the client before resending the
request, and to enable VLAN 2 as an IEEE 802.1x guest VLAN when an IEEE 802.1x port is connected
to a DHCP client:
Switch(config-if)# dot1x timeout quiet-period 3
Switch(config-if)# dot1x timeout tx-period 15
Switch(config-if)# dot1x guest-vlan 2
This example shows how to enable the optional guest VLAN behavior and to specify VLAN 5 as an
IEEE 802.1x guest VLAN:
Switch(config)# dot1x guest-vlan supplicant
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# dot1x guest-vlan 5
You can verify your settings by entering the show dot1x [interface interface-id] privileged EXEC
command.
Related Commands Command
dot1x
show dot1x
Catalyst 2960 Switch Command Reference
2-66
[interface interface-id]
Chapter 2
Description
Enables the optional guest VLAN supplicant feature.
Displays IEEE 802.1x status for the specified port.
Catalyst 2960 Switch Cisco IOS Commands
78-16882-01