Graco GE-DS-242-POE Manual De Usuario

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Chapter 4: Web-Based Management 
112 
GE-DS-242-PoE Managed Ethernet Switch User Manual 
In contrast, when an 802.1X-enabled client connects to a port that is not running the 
802.1X protocol, the client initiates the authentication process by sending the EAPOL-
start frame. When no response is received, the client sends the request for a fixed 
number of times. Because no response is received, the client begins sending frames 
as if the port is in the authorized state  
If the client is successfully authenticated (receives an Accept frame from the 
authentication server), the port state changes to authorized, and all frames from the 
authenticated client are allowed through the port. If the authentication fails, the port 
remains in the unauthorized state, but authentication can be retried. If the 
authentication server cannot be reached, the switch can retransmit the request. If no 
response is received from the server after the specified number of attempts, 
authentication fails, and network access is not granted. 
When a client logs off, it sends an EAPOL-logoff message, causing the switch port to 
transition to the unauthorized state. 
If the link state of a port transitions from up to down, or if an EAPOL-logoff frame is 
received, the port returns to the unauthorized state. 
System Configuration 
802.1x makes use of the physical access characteristics of IEEE802 LAN 
infrastructures in order to provide a means of authenticating and authorizing devices 
attached to a LAN port that has point-to-point connection characteristics, and of 
preventing access to that port in cases in which the authentication and authorization 
process fails. 
To enable 802.1x, from System \ System Information \ Misc Config then you still to fill 
in the authentication server information: 
Figure 4-65: System information \ Misc Configuration\ 802.1x Protocol