Cisco Catalyst 3560-X Software Configuration Manual page 351

Chapter 1 Configuring IEEE 802.1x Port-Based Authentication
Beginning in privileged EXEC mode, follow these steps to configure the maximum number of allowed
authentication attempts. 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
Step 5 authentication event fail action
authorize vlan-id
Step 6 authentication event retry retry count
Step 7 end
Step 8 show authentication interface
interface-id
Step 9 copy running-config startup-config
To return to the default value, use the no authentication event retry interface configuration command.
This example shows how to set 2 as the number of authentication attempts allowed before the port moves
to the restricted VLAN:
Switch(config-if)# authentication event retry 2
Configuring Inaccessible Authentication Bypass and Critical Voice VLAN
You can configure the inaccessible bypass feature, also referred to as critical authentication or the AAA
fail policy to allow data traffic to pass through on the native VLAN when the server is not available. You
can also configure the critical voice VLAN feature so that if the server is not available and traffic from
the host is tagged with the voice VLAN, the connected device (the phone) is put in the configured voice
VLAN for the port.
OL-25303-03
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.
Specify a number of authentication attempts to allow before a port moves
to the restricted VLAN. The range is 1 to 3, and the default is 3.
Return to privileged EXEC mode.
(Optional) Verify your entries.
(Optional) Save your entries in the configuration file.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Configuring 802.1x Authentication
"802.1x Authentication
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