D-Link DES-3550 Manual page 117

To configure the settings by port, click on the hyperlinked port number under the Port heading, which will display the
following table to configure:
This screen allows you to set the following features:
Parameter Description
From [ ] To [ ]
AdmCtrlDir <both>
PortControl < Auto >
DES-3550 Fast Ethernet Layer 2 Switch
Figure 6- 73. 802.1X Authenticator Settings - Modify
Enter the port or ports to be set.
Sets the administrative-controlled direction to either in or both.
If in is selected, control is only exerted over incoming traffic through the port you
selected in the first field.
If both is selected, control is exerted over both incoming and outgoing traffic through
the controlled port selected in the first field.
This allows you to control the port authorization state.
Select forceAuthorized to disable 802.1X and cause the port to transition to the
authorized state without any authentication exchange required. This means the port
transmits and receives normal traffic without 802.1X-based authentication of the
client.
If forceUnauthorized is selected, the port will remain in the unauthorized state,
ignoring all attempts by the client to authenticate. The Switch cannot provide
authentication services to the client through the interface.
If Auto is selected, it will enable 802.1X and cause the port to begin in the
unauthorized state, allowing only EAPOL frames to be sent and received through the
port. The authentication process begins when the link state of the port transitions from
down to up, or when an EAPOL-start frame is received. The Switch then requests the
identity of the client and begins relaying authentication messages between the client
and the authentication server.
The default setting is Auto.
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