Switch#aaa new-model

Switch(config)#radius server RadiusServerName

Switch(config-radius-server)#address ipv4 RadiusServerIp auth-port 1812 acct-port 1813

Switch(config-radius-server)#key Yourkey

Switch(config)#aaa group server radius RadiusServerName

Switch(config-sg-radius)#server name RadiusServerName

Switch(config-sg-radius)#ip radius source-interface Vlan XX

Switch(config)#radius-server domain-stripping

Switch(config)#dot1x system-auth-control

Switch(config)#dot1x logging verbose

Switch(config)#aaa authentication dot1x default group RadiusServerName

Switch(config)#aaa authorization network default group RadiusServerName

Switch(config)#interface g0/1

Switch(config-if)#spanning-tree portfast

Switch(config-if)#switchport mode access

Switch(config-if)#switchport access Vlan XX

Switch(config-if)#authentication port-control auto

Switch(config-if)#dot1x pae authenticator