Cisco 500 series Administration Manual page 324

Configuring Security
Configuring 802. 1 X
STEP 1
STEP 2
Cisco 500 Series Stackable Managed Switch Administration Guide
Defining 802.1X Properties
The 802. 1 X Properties page is used to globally enable 802. 1 X and define how
ports are authenticated. For 802. 1 X to function, it must be activated both globally
and individually on each port.
To define port-based authentication:
Click Security > 802.1X > Properties. The Properties page is displayed.
Enter the parameters.
• Port-Based Authentication—Enable or disable port-based, 802. 1 X
authentication.
• Authentication Method—Select the user authentication methods. The
options are:
- RADIUS, None—Perform port authentication first by using the RADIUS
server. If no response is received from RADIUS (for example, if the server
is down), then no authentication is performed, and the session is
permitted
.
access is denied and the session terminated.
- RADIUS—Authenticate the user on the RADIUS server. If no
authentication is performed, the session is not permitted.
- None—Do not authenticate the user. Permit the session.
• Guest VLAN—Select to enable the use of a Guest VLAN for unauthorized
ports. If a Guest VLAN is enabled, all unauthorized ports automatically join
the VLAN selected in the Guest VLAN ID field. If a port is later authorized, it
is removed from the Guest VLAN.
• Guest VLAN ID—Select the guest VLAN from the list of VLANs.
• Guest VLAN Timeout—Define a time period:
- After linkup, if the software does not detect the 802. 1 X supplicant, or the
authentication has failed, the port is added to the Guest VLAN, only after
the Guest VLAN timeout period has expired.
- If the port state changes from Authorized to Not Authorized, the port is
added to the Guest VLAN only after the Guest VLAN timeout has expired.
If the server is available but the user credentials are incorrect,
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