Understanding Ieee 802.1X Port-Based Authentication - Planet GS-5220 Series User Manual

database of multiple user name / password pairs with associated privilege levels for each user that requires
management access to the Managed Switch.

4.11.1 Understanding IEEE 802.1X Port-based Authentication

The IEEE 802.1X standard defines a client-server-based access control and authentication protocol that restricts
unauthorized clients from connecting to a LAN through publicly accessible ports. The authentication server
authenticates each client connected to a switch port before making available any services offered by the switch
or the LAN.
Until the client is authenticated, 802.1X access control allows only Extensible Authentication Protocol over LAN
(EAPOL) traffic through the port to which the client is connected. After authentication is successful, normal
traffic can pass through the port.
This section includes this conceptual information:
• Device Roles
• Authentication Initiation and Message Exchange
• Ports in Authorized and Unauthorized States
Device Roles

With 802.1X port-based authentication, the devices in the network have specific roles as shown below.
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