HP 1920-24G-PoE+ Bedienungsanleitung PDF herunterladen (Seite 335)

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• MAC-based access control—Each user is separately authenticated on a port. When a user logs off,

no other online users are affected.

Controlled/uncontrolled port and port authorization status

802.1X defines two logical ports for the network access port: controlled port and uncontrolled port. Any

packet arriving at the network access port is visible to both logical ports.

• Controlled port—Allows incoming and outgoing traffic to pass through when it is in the authorized

state, and denies incoming and outgoing traffic when it is in the unauthorized state, as shown

in Figure 299.

The controlled port is set in authorized state if the client has passed authentication,

and in unauthorized state, if the client has failed authentication.

• Uncontrolled port—Is always open to receive and transmit EAPOL frames.

Figure 299 Authorization state of a controlled port

In the unauthorized state, a controlled port controls traffic in one of the following ways:

• Performs bidirectional traffic control to deny traffic to and from the client.

• Performs unidirectional traffic control to deny traffic from the client.

The device supports only unidirectional traffic control.

Packet formats

EAP packet format

Figure 300 shows the EAP packet format.

Figure 300 EAP packet format

Controlled port Uncontrolled port

Authenticator system 1

LAN

Controlled port Uncontrolled port

Authenticator system 2

LAN

Port unauthorized

Port authorized

015

Code

Data

Length

Identifier

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