Cisco Catalyst 4500 Series - Configuring Voice Aware 802.1 X Security

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 46 Configuring 802.1X Port-Based Authentication
Configuring 802.1X Port-Based Authentication
This example shows how to enable 802.1X with voice VLAN feature on Fast Ethernet interface 5/9:
Cisco IOS Release 12.2(50)SG and later
Switch# configure terminal
Switch(config)# interface fastethernet5/9
Switch(config-if)# switchport access vlan 2
Switch(config-if)# switchport mode access
Switch(config-if)# switchport voice vlan 10
Switch(config-if)# dot1x pae authenticator
Switch(config-if)# authentication port-control auto
Switch(config-if)# end
Switch(config# end
Switch#
Cisco IOS Release 12.2(46)SG or earlier
Switch# configure terminal
Switch(config)# interface fastethernet5/9
Switch(config-if)# switchport access vlan 2
Switch(config-if)# switchport mode access
Switch(config-if)# switchport voice vlan 10
Switch(config-if)# dot1x pae authenticator
Switch(config-if)# dot1x port-control auto
Switch(config-if)# end
Switch(config# end
Switch#
Configuring Voice Aware 802.1x Security
You use the voice aware 802.1x security feature on the switch to disable only the VLAN on which a
security violation occurs, whether it is a data or voice VLAN. You can use this feature in IP phone
deployments where a PC is connected to the IP phone. A security violation found on the data VLAN
results in the shutdown of only the data VLAN. The traffic on the voice VLAN flows through the switch
without interruption.
Step 6
Switch(config-if)# dot1x pae
authenticator
Enables 802.1X authentication on the port with default parameters.
Refer to the “Default 802.1X Configuration” section on page 46-30.
Step 7
Cisco IOS Release 12.2(50)SG and later
and later
Switch(config-if)# authentication
port-control auto
Cisco IOS Release 12.2(46)SG or earlier
releases
Switch(config-if)# dot1x
port-control auto
Enables 802.1X authentication on the interface.
Step 8
Switch(config-if)# end
Returns to configuration mode.
Step 9
Switch(config)# end
Returns to privileged EXEC mode.
Step 10
Switch# show dot1x interface
interface-id details
(Optional) Verifies your entries.
Step 11
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.
Command Purpose