Users Guide

• tacacs+: use the TACACS+ servers congured with the tacacs-server host
command.
... method4 (OPTIONAL) Enter up to four additional methods. In the event of a “no response” from
the rst method, the system applies the next congured method (up to four congured
methods).
Defaults Not congured (that is, no authentication is performed).
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.5(0.1) Added support for roles Z9500.
9.5(0.0) Added support for roles on the Z9000, S6000, S4820T, S4810, MXL
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
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.
pre-6.2.1.0 Introduced on the E-Series.
Usage Information
By default, the locally congured username password is used. If you congure aaa authentication login
default, Dell Networking OS uses the methods this command denes for login instead.
Methods congured with the aaa authentication login command are evaluated in the order they are
congured. If users encounter an error with the rst method listed, Dell Networking OS applies the next method
congured. If users fail the rst 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, Dell Networking OS employs the second
method (or third method, if necessary) automatically. For example, if the TACACS+ server is reachable,
but the server key is invalid, Dell Networking OS proceeds to the next authentication method. The
TACACS+ is incorrect, but the user is still authenticated by the secondary method.
After conguring the aaa authentication login command, congure 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.
1302 Security