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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-01
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Configuring IEEE 802.1x Authentication
To disable and remove the guest VLAN, use the no dot1x guest-vlan interface configuration command.
The port returns to the unauthorized state.
This example shows how to enable VLAN 2 as an IEEE 802.1x guest VLAN:
Switch(config)# interface gigabitethernet1/2
Switch(config-if)# dot1x guest-vlan 2
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 re-sending 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
Configuring a Restricted VLAN
When you configure a restricted VLAN on a switch, clients that are IEEE 802.1x-compliant are moved
into the restricted VLAN when the authentication server does not receive a valid username and
password. The switch supports restricted VLANs only in single-host mode.
Beginning in privileged EXEC mode, follow these steps to configure a restricted VLAN. This procedure
is optional.
To disable and remove the restricted VLAN, use the no dot1x auth-fail vlan interface configuration
command. The port returns to the unauthorized state.
Step 7
show dot1x interface interface-id Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the port to be configured, and enter interface configuration mode.
For the supported port types, see the
“IEEE 802.1x Authentication
Configuration Guidelines” section on page 10-20.
Step 3
switchport mode access Set the port to access mode.
Step 4
dot1x port-control auto Enable IEEE 802.1x authentication on the port.
Step 5
dot1x auth-fail vlan vlan-id Specify an active VLAN as an IEEE 802.1x restricted VLAN. The range
is 1 to 4094.
You can configure any active VLAN except an RSPAN VLAN or a voice
VLAN as an IEEE 802.1x restricted VLAN.
Step 6
end Return to privileged EXEC mode.
Step 7
show dot1x interface interface-id (Optional) Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.