for example if i added: aaa authentication login default group tacacs+aaa authentication login ssh group tacacs+ local  and under line vty 0 4:transport input ssh if the user pass the first login line, does cisco OS read the second auth lines too?  

thanks i just tried it when i ssh into the device, only password section was updated, i still get plain login> for usernamein the settings its username:password: do i need to change the string for username to    username>   for it to work  or login-"...

thanks