Allied Telesis AT-S39 - Manual (Page 198)

Section II: Local and Telnet Management
198
4 - TAC Server Order
You use this selection to indicate the order in which you want
the switch to query the TACACS+ servers for logon
authentication. Of course, you can skip this option if you
specified only one IP address. The default is 1, 2, and 3, in that
order.
5 - TAC Global Secret
If all of the TACACS+ servers have the same encryption secret,
rather then entering the same secret when you enter the IP
addresses, you can use this option to enter the secret just
once.
3 - TAC Timeout
This parameter specifies the maximum amount of time the
switch waits for a response from a TACACS+ server before
assuming the server cannot respond. If the timeout expires
and the server has not responded, the switch queries the next
TACACS+ server in the list. If there aren’t any more servers, the
switch defaults to the standard Manager and Operator
accounts. The default is 30 seconds. The range is 1 to 30
seconds.
c. Once you have finished configuring the settings, type R to return
to the Authentication Menu.
d. Type 1 to select Server-based Authentication. This menu option is
used to enable and disable the manager account feature on the
switch. If disabled, the switch uses its standard Manager and
Operator accounts when you log on to manage the switch. If
enabled, the switch uses the manager accounts on the TACACS+
or RADIUS server. The following prompt is displayed:
Server Based User Authentication (E-Enabled, D-
Disabled) ->
e. Type E to enable the manager account feature on the switch or D
to disable it. The default is disabled.
f. After you have finished configuring the parameters, type S to
select Save Configuration Changes.