Users Guide

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 Operating System
(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 Operating System (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 Operating System
(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.
Related Commands
login authentication — enables AAA login authentication on the terminal lines.
radius-server host — species a RADIUS server host.
tacacs-server host — species a TACACS+ server host.
banner exec
Congure a message that is displayed when your enter EXEC mode.
Syntax
banner exec c line c
To delete a banner, use the no banner exec command.
Parameters
c Enter the keywords banner exec, then enter a character delineator, represented
here by the letter c. Press ENTER.
line Enter a text string for your banner message ending the message with your
delineator. In the following example, the delineator is a percent character (%); the
banner message is “testing, testing”.
Defaults No banner is displayed.
Command Modes CONFIGURATION
Supported Modes All Modes
Command History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.3(0.0) Supported on the M I/O Aggregator.
Usage Information After entering the banner login command, type one or more spaces and a delineator character. Enter the
banner text then the second delineator character. When the user is connected to the router, if a message of
the day banner is congured, it displays rst. If no message of the day banner is congured, the login banner
and prompt appear. After the user has logged in, the EXEC banner (if congured) displays.
Security
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