Administrator Guide

dot1x event Accounting type Attributes
Supplicant goes off without explicitly
sending EAP logoff
Stop Stop record attributes with termination cause as Idle
Timeout (4).
Periodic Reauth of supplicant Stop Stop record attributes with termination cause as
Supplicant restart (19).
Failure of dot1x authorized port
assignment to untagged VLAN
Stop Stop record attributes with termination cause as Port
error (8).
dot1x user Reauth-failure Stop Stop record attributes with termination cause as
Reauthentication Failure (20).
Disable dot1x globally/interface Stop Stop record attributes with termination cause as Port
Administratively Disabled (22).
AAA Authentication
The system supports a distributed client/server system implemented through authentication, authorization, and accounting (AAA) to help
secure networks against unauthorized access.
In the Dell Networking implementation, the switch acts as a RADIUS or TACACS+ client and sends authentication requests to a central
remote authentication dial-in service (RADIUS) or Terminal access controller access control system plus (TACACS+) server that contains
all user authentication and network service access information.
Dell Networking uses local usernames/passwords (stored on the Dell Networking system) or AAA for login authentication. With AAA, you
can specify the security protocol or mechanism for different login methods and different users. In the Dell Networking OS, AAA uses a list
of authentication methods, called method lists, to define the types of authentication and the sequence in which they are applied. You can
define a method list or use the default method list. User-defined method lists take precedence over the default method list.
NOTE:
If a console user logs in with RADIUS authentication, the privilege level is applied from the RADIUS server if the
privilege level is configured for that user in RADIUS, whether you configure RADIUS authorization.
Configuration Task List for AAA Authentication
The following sections provide the configuration tasks.
• Configure Login Authentication for Terminal Lines
• Configuring AAA Authentication Login Methods
• Enabling AAA Authentication
• Enabling AAA Authentication—RADIUS
For a complete list of all commands related to login authentication, refer to the Security chapter in the Dell Networking OS Command
Reference Guide.
Configure Login Authentication for Terminal Lines
You can assign up to five authentication methods to a method list. The system evaluates the methods in the order in which you enter
them in each list.
If the first method list does not respond or returns an error, the system applies the next method list until the user either passes or fails the
authentication. If the user fails a method list, the system does not apply the next method list.
Configuring AAA Authentication Login Methods
To configure an authentication method and method list, use the following commands.
Dell Networking OS Behavior: If you use a method list on the console port in which RADIUS or TACACS is the last authentication
method, and the server is not reachable, Dell Networking OS allows access even though the username and password credentials cannot
be verified. Only the console port behaves this way, and does so to ensure that users are not locked out of the system if network-wide
issue prevents access to these servers.
1. Define an authentication method-list (method-list-name) or specify the default.
CONFIGURATION mode
aaa authentication login {method-list-name | default} method1 [... method4]
802
Security