Cisco Catalyst 2975 Software Configuration Manual page 302

Configuring 802.1x Authentication
Command
Step 5
authentication event fail action
authorize vlan-id
Step 6
end
Step 7
show authentication interface-id
or
show dot1x interface interface-id
Step 8 copy running-config startup-config
To disable and remove the restricted VLAN, use the no dot1x auth-fail vlan interface configuration
command. The port returns to the unauthorized state.
This example shows how to enable VLAN 2 as an 802.1x restricted VLAN:
Switch(config-if)# dot1x auth-fail vlan 2
You can configure the maximum number of authentication attempts allowed before a user is assigned to
the restricted VLAN by using the dot1x auth-fail max-attempts interface configuration command. The
range of allowable authentication attempts is 1 to 3. The default is 3 attempts.
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
Step 4 authentication port-control auto
or
dot1x port-control auto
Step 5 dot1x auth-fail vlan vlan-id
Step 6 dot1x auth-fail max-attempts max
attempts
Step 7 end
Step 8
show authentication interface-id
or
show dot1x interface interface-id
Step 9 copy running-config startup-config
Catalyst 2975 Switch Software Configuration Guide
10-52
Chapter 10
Purpose
Specify an active VLAN as an 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 802.1x restricted VLAN.
Return to privileged EXEC mode.
(Optional) 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.
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 RSPAN 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.
Configuring IEEE 802.1x Port-Based Authentication
"802.1x Authentication
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