Administrator Guide

Security Commands 867
Default Configuration
The default enable list is enableList. It is used by console, telnet, and SSH
and only contains the method enable and none.
Command Mode
Global Configuration mode
User Guidelines
The default and optional list names created with the aaa authentication
enable command are used with the enable authentication command.
Create a list by entering the aaa authentication enable list-name method
command where list-name is any character string used to name this list. The
method argument identifies the list of methods that the authentication
algorithm tries in the given sequence.
The additional methods of authentication are used only if the previous
method returns an error, not if it fails to authenticate the administrator. Only
the RADIUS or TACACS methods can return an error. For example, if none is
specified as an authentication method after radius, no authentication is used
if the RADIUS server is down.
To ensure that the authentication succeeds even if all methods return an
error, specify none as the final method in the command line. Note that enable
will not succeed for a privilege level one administrator if no authentication
method is defined. A privilege level one administrator must authenticate to
get to Privileged Exec mode.
Keyword Source or destination
enable Uses the enable password for authentication.
line Uses the line password for authentication.
none Uses no authentication.
radius Uses the list of all RADIUS servers for authentication.
tacacs Uses the list of all TACACS+ servers for authentication.