A company has a TACACS+ server which perfoms AAA functions for network componenets.
A router is configured with following commands:-
aaa new-model
aaa authentication login default group tacacs+ local
aaa authentication login no_tacacs local
aaa authorization exec default group tacacs+ local
aaa accounting exec default start-stop group tacacs+
username abcd password 7 123abc456def
tacacs-server host 200.100.50.1
line con 0
privilege level 15
login authentication no_tacacs
transport input none
stopbits 1
line vty 0 4
password 7 567qwe923abc457ujtfg
line vty 5 15
password 7 987brf345tyg123rty78
If the TACACS+ server fails ,using the console port I am am able to telnet & navigate to the previlege mode.
If the TACACS+ server fails I am able to telnet to the router using tty mode & login in to the router.
I am not able to navigate to the previlige mode prompt.
What's the solution?