Administrator Guide

● radius: use the RADIUS servers configured with the radius-server host
command.
● 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, the system 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 Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.5(0.1) Added support for roles on the Z9500.
9.5(0.0) Added support for roles on the Z9000, S6000, S4820T, S4810, MXL
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
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, the system 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, the system 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, the system employs the second method (or
third method, if necessary) automatically. For example, if the TACACS+ server is reachable, but the
server key is invalid, the system 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.
1518 Security