tacacs-server directed-request — global
tacacs-server directed-request no tacacs-server directed-request
Which TACACS server is contacted
This command causes the router to split each username into two parts, separated by the @ symbol. The first part is the actual username used for authentication; the second part is the name of the TACACS server to send the request to. Disabling this feature causes the TACACS servers to be queried in order; the entire username string is used for authentication.