R1#sh run | b user
username JoeUser privilege 13 nopassword
username ccie privilege 15
username bob privilege 15
memory-size iomem 10
aaa new-model
!
!
aaa authentication login default none
aaa authentication login Prob6 group tacacs+ local
aaa session-id common
!
!
!
!
tacacs-server host 17.57.100.99
tacacs-server directed-request
tacacs-server key MyKey

line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 privilege level 15
 login authentication Prob6
!
!
end

R1#