Administrator Guide

Authentication, Authorization, and Accounting 307
To configure the switch:
1
Create the VLANs and configure the VLAN names.
console(config)#vlan 100
console(config-vlan100)#name Authorized
console(config-vlan100)#exit
console(config)#vlan 200
console(config-vlan200)#name Unauthorized
console(config-vlan200)#exit
console(config)#vlan 300
console(config-vlan300)#name Guest
console(config-vlan300)#exit
2 Configure information about the external RADIUS server the switch uses
to authenticate clients. The RADIUS server IP address is 10.10.10.10, and
the shared secret is qwerty123.
console(config)#radius-server key qwerty123
console(config)#radius-server host 10.10.10.10
console(Config-auth-radius)#exit
3 Enable 802.1X on the switch.
console(config)#dot1x system-auth-control
4 Create a default authentication login list and use the RADIUS server for
port-based authentication for connected clients.
console(config)#aaa authentication dot1x default radius
5 Allow the switch to accept VLAN assignments by the RADIUS server.
console(config)#aaa authorization network default radius
6 Enter interface configuration mode for the downlink ports.
console(config)#interface range Gi1/0/1-23
7 Set the downlink ports to the access mode because each downlink port
connects to a single host that belongs to a single VLAN. Set the port
control mode to auto (default) to allow VLAN assignment from the
RADIUS server.
console(config-if)#switchport mode access
console(config-if)#dot1x port-control auto
8 Enable periodic reauthentication of the client on the ports and set the
number of seconds to wait between reauthentication attempts to 300
seconds. Reauthentication is enabled to increase security. If the client