Deployment Guide

Version Description
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.
aaa reauthenticate enable
Enable re-authentication of user whenever there is a change in the authenticators.
Syntax
aaa reauthenticate enable
To disable the re-authentication option, use the no aaa reauthenticate enable command.
Defaults Disabled
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Introduced this command.
Usage
Information
When an operating system enables to change the user authenticators, the users might access resources
and perform tasks that they do not have authorization.
Once re-authentication is enabled, Dell Networking OS prompts the users to re-authenticate whenever
there is a change in authenticators.
1510 Security