Deve-se substituir os itens em vermelho pelo IP e chave do servidor TACACS
configure terminal
!
aaa accounting commands 15 default start-stop group tacacs+
aaa accounting exec default start-stop group tacacs+
aaa authentication login default group tacacs+ local
aaa authorization exec default group tacacs+ local
tacacs-server host 192.168.20.6 key parks
!
do copy ru st
!