Security: 802.1X Authentication
802.1X Configuration Through the GUI
501 Cisco 500 Series Stackable Managed Switch Administration Guide
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See Port Host Modes for an explanation of these modes.
To define 802.1X advanced settings for ports:
STEP 1 Click Security > 802.1X/MAC/Web Authentication > Host and Session 
Authentication.
802.1X authentication parameters are described for all ports. All fields except the 
following are described in the Edit page.
• Number of Violations—Displays the number of packets that arrive on the 
interface in single-host mode, from a host whose MAC address is not the 
supplicant MAC address.
STEP  2 Select a port, and click Edit.
STEP  3 Enter the parameters.
• Interface—Enter a port number for which host authentication is enabled.
• Host Authentication—Select one of the modes. These modes are 
described above in Port Host Modes.
Single Host Violation Settings (only displayed if host authentication is Single 
Host):
• Action on Violation—Select the action to be applied to packets arriving in 
Single Session/Single Host mode, from a host whose MAC address is not 
the supplicant MAC address. The options are:
- Protect (Discard)—Discards the packets. 
- Restrict (Forward)—Forwards the packets.
- Shutdown—Discards the packets and shuts down the port. The ports 
remains shut down until reactivated, or until the device is rebooted.
• Traps—Select to enable traps.
• Trap Frequency—Defines how often traps are sent to the host. This field can 
be defined only if multiple hosts are disabled.
STEP  4 Click Apply. The settings are written to the Running Configuration file.