Note
The command disable tacacs is not required while changing TACACS+ servers.If only a single TACACS+ server is configured, you must disable TACACS authorization (if enabled) before reconfiguring TACACS+ server:
disable tacacs-authorization
To unconfigure the existing primary TACACS+ server:
unconfigure tacacs server [primary | secondary]
Note
After this step, TACACS+ will failover to secondary server.configure tacacs [primary | secondary] server [ipaddress | hostname] {tcp_port} client-ip ipaddress {vr vr_name}
configure tacacs [primary | secondary] shared-secret {encrypted} string
Note
Only after configuring shared-secret password for primary server, TACACS+ will fallback to primary server from secondary.unconfigure tacacs server [primary | secondary]
configure tacacs [primary | secondary] server [ipaddress | hostname] {tcp_port} client-ip ipaddress {vr vr_name}
configure tacacs [primary | secondary] shared-secret {encrypted} string