What is IEEE 802.1X?
The IEEE 802.1X standard provides a means of preventing unauthorized
access by supplicants (clients) to the services the switch offers, such as access
to the LAN.
The 802.1X network has three components:
Supplicant — The client connected to the authenticated port that
requests access to the network.
Authenticator — The network device that prevents network access prior to
Authentication Server — The network server (such as a RADIUS server)
that performs the authentication on behalf of the authenticator, and
indicates whether the user is authorized to access system services.
Figure 19-1 shows the 802.1X network components.
Figure 19-1. IEEE 802.1X Network
As shown in Figure 19-1, the PowerConnect M6220/M6348/M8024/M8024-k
switch is the authenticator and enforces the supplicant (a PC) that is
attached to an 802.1X-controlled port to be authenticated by an
authentication server (a RADIUS server). The result of the authentication
process determines whether the supplicant is authorized to access services on
that controlled port.
Configuring 802.1X and Port-Based Security