802.1X Reauthentication Timer Test for School Recognition Displays
A school recognition display 802.1X reauthentication timer test confirms that the periodic re-authentication required by IEEE 802.1X port-based Network Access Control does not interrupt continuous display playback, cause the display to lose its content platform connection, or leave the switch port in an unauthorized state that keeps the screen dark. When 802.1X is active on the switch ports serving lobby kiosks and hallway recognition screens, the switch enforces periodic reauthentication—typically every 3,600 seconds by default on Cisco IOS—by restarting the EAP exchange with the connected device or issuing a fresh MAC Authentication Bypass (MAB) request to the RADIUS server. If the timer fires at the wrong moment, the RADIUS server is slow, or the display’s operating system does not maintain a responsive supplicant daemon, the port can transition to the unauthorized state briefly while authentication resolves. That brief gap interrupts content playback and, depending on the display’s application behavior, may require a manual restart to resume normal operation.
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