Radius broke my IOS?

Question

while configuring a 3560G for aaa\radius my router froze and had to be manually booted.
aaa settings are ok, didn't get any problems with this part
but when I started typing the radius commands... oh boy!
this is the first line: ip radius source-interface Vlan200
then this is the second command which broke it all:
radius-server host 192.168.200.x auth-port 1645 acct-port 1646 key 7 password
any idea what & why this command would break and how can I configure my radius without breaking the switch?

Answer 1

This example shows how to enable AAA, use RADIUS authentication and enable device tracking:
Switch(config) configure terminal
Switch(config)# aaa new-model
Switch(config)# aaa authentication login default group radius
Switch(config)# aaa authorization auth-proxy default group radius
Switch(config)# radius-server host key key1
Switch(config)# radius-server attribute 8 include-in-access-req
Switch(config)# radius-server vsa send authentication
Switch(config)# ip device tracking
Switch(config) end