Administrator Guide

Table 91. Use cases for dot1x supplicant to trigger RADIUS Accounting Start/Stop records (continued)
dot1x event Accounting type Attributes
Configure Port control to force
unauth
Stop Stop record attributes with termination cause as
port-reinitialized (21).
Interface Host mode change
(single/multihost/multiauth)
Stop Stop record attributes with termination cause as
port-reinitialized (21).
Configure max supplicant per
interface
Stop Stop record attributes with termination cause as
port-reinitialized (21).
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.
Security
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