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Configuring A Restricted Vlan - Cisco Catalyst 3750-E Software Configuration Manual

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Configuring 802.1x Authentication
Command
Step 7
show authentication interface-id
or
show dot1x interface interface-id
Step 8
copy running-config startup-config
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 802.1x guest VLAN:
Switch(config)# interface gigabitethernet2/0/2
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 802.1x guest VLAN when an 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 stack or 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.
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
switchport mode access
or
switchport mode private-vlan host
Step 4
authentication port-control auto
or
dot1x port-control auto
Step 5
dot1x auth-fail vlan vlan-id
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
10-52
Chapter 10
Purpose
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Specify the port to be configured, and enter interface configuration mode.
For the supported port types, see the
Configuration Guidelines" section on page
Set the port to access mode,
or
Configure the Layer 2 port as a private-VLAN host port.
Enable 802.1x authentication on the port.
Specify an active VLAN as an 802.1x restricted VLAN. The range is 1 to
4094.
You can configure any active VLAN except an internal VLAN (routed
port), an RSPAN VLAN, a primary private VLAN, or a voice VLAN as
an 802.1x restricted VLAN.
Configuring IEEE 802.1x Port-Based Authentication
"802.1x Authentication
10-35.
OL-9775-08

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