Cisco Catalyst 4500 series Administration Manual page 1139

Configuring 802.1X Port-Based Authentication
This chapter describes how to configure IEEE 802.1X port-based authentication on the Catalyst 4500
series switch to prevent unauthorized client devices from gaining access to the network.
This chapter includes the following major sections:
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For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Note
Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html
If a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
Cisco IOS library. See the Cisco IOS Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/ps6350/index.html
About 802.1X Port-Based Authentication
802.1X defines 802.1X port-based authentication as a client-server based access control and
authentication protocol that restricts unauthorized clients from connecting to a LAN through publicly
accessible ports. An authentication server validates each supplicant (client) connected to an
authenticator (network access switch) port before making available any services offered by the switch
or the LAN.
OL_28731-01
About 802.1X Port-Based Authentication, page 46-1
Configuring 802.1X Port-Based Authentication, page 46-29
Controlling Switch Access with RADIUS, page 46-97
Configuring Device Sensor, page 46-117
Displaying 802.1X Statistics and Status, page 46-126
Displaying Authentication Details, page 46-126
Cisco IOS Security Features, page 46-131
C H A P T E R
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
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