Cisco Catalyst
aaa new-model
ip radius source-interface vlan XXX
radius-server host <IP_address_radius_server> auth-port <port-number> acct-port <port-number>
radius-server key SharedKey
!
aaa authentication login default group radius local
aaa authorization exec default group radius if-authenticated => directly upgrade privilege to 'enable'
!
line vty 0 15
login authentication default
Switch HP Procurve
radius-server host <IP_address_radius_server> key " SharedKey " acct-port <port-number> auth-port <port-number>
aaa authentication ssh login radius local
aaa authentication ssh enable radius local
aaa authentication login privilege-mode
Switch Nexus
ip radius source-interface mgmt 0
radius-server host <IP_address_radius_server> auth-port <port-number> acct-port<port-number>
radius-server key SharedKey
!
aaa group server radius FREE-RADIUS
server <IP_address_radius_server>
use-vrf management
source-interface mgmt 0
!
aaa authentication login default group FREE-RADIUS