Configuring TACACS/TACACS+ for Devices in a Traditional Stack

Because devices operating in a RUCKUS traditional stack topology present multiple console ports, you must take additional steps to secure these ports when configuring TACACS/TACACS+.

What's missing here? What are the special extra steps needed for stacking? How does this tie in to the example that was included below?

The following is a sample AAA console configuration using TACACS+.

aaa authentication login default tacacs+ enable <- For Telnet/SSH login, use TACACS+ as primary,
                                                    use super-user password as secondary
aaa authentication login privilege-mode <- After successful login, enter privileged EXEC mode 
aaa accounting commands 0 default start-stop  tacacs+ <- Do TACACS+ accounting 
                                                          for all device commands 
aaa accounting exec default start-stop  tacacs+ <- Do TACACS+ accounting for Telnet/SSH
                                                    on connection and log out 
aaa accounting system default start-stop  tacacs+ <- Use TACACS+ accounting to record
                                                      system events 
ip address 10.10.6.56/255
tacacs-server host 255.253.255 <- Designates TACACS+ host
tacacs-server key 2 $d3NpZ0BVXFpJ<- Defines TACACS+ key