Reference Guide
• tacacs+: use the TACACS+ servers configured with the
tacacs-server host command.
... method4
(OPTIONAL) Enter up to four additional methods. In the event of a “no
response” from the first method, FTOS applies the next configured
method (up to four configured methods).
Defaults Not configured (that is, no authentication is performed).
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version
6.2.1.0
Introduced on the E-Series.
Usage
Information
By default, the locally configured username password is used. If you configure aaa
authentication login default, FTOS uses the methods this command defines for
login instead.
Methods configured with the aaa authentication login command are evaluated in
the order they are configured. If users encounter an error with the first method listed, FTOS
applies the next method configured. If users fail the first method listed, no other methods are
applied. The only exception is the local method. If the user’s name is not listed in the local
database, the next method is applied. If the correct user name/password combination is not
entered, the user is not allowed access to the switch.
NOTE: If authentication fails using the primary method, FTOS employs the second method
(or third method, if necessary) automatically. For example, if the TACACS+ server is
reachable, but the server key is invalid, FTOS proceeds to the next authentication method.
The TACACS+ is incorrect, but the user is still authenticated by the secondary method.
After configuring the aaa authentication login command, configure the login
authentication command to enable the authentication scheme on terminal lines.
Connections to the SSH server work with the following login mechanisms: local, radius, and
tacacs.
Related
Commands
login authentication — enables AAA login authentication on the terminal lines.
password — creates a password.
radius-server host — specifies a RADIUS server host.
tacacs-server host — specifies a TACACS+ server host.
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