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Configuring 802.1X Authentication on the Switch
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Configuration Guidelines
This section provides the guidelines for configuring 802.1X authentication with private VLANs:
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Configuring 802.1X Authentication with Private VLANs
These sections describe and provide examples on configuring 802.1X authentication with private
VLANs:
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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
40-42
Used as a nonoperational port VLAN before the port reaches an 802.1X state (authenticated,
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guest VLAN, or authentication failure VLAN)
Used as an operational VLAN in the authenticated state if no VLAN is provided by the RADIUS
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server
Can be a private VLAN
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The 802.1X VLAN behavior is as follows:
Used as an operational port VLAN after 802.1X moves the port to an 802.1X state
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(authenticated, guest VLAN, or authentication failure VLAN)
Can be a private VLAN
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No changes to the existing CLI are required for configuring 802.1X authentication with private
VLANs.
When you add an 802.1X port to a VLAN (RADIUS-assigned VLAN, guest VLAN, or
authentication failure VLAN), the following checks are automatically made:
It is verified that the private VLAN is a secondary VLAN
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It is verified that the secondary VLAN is associated to a valid primary VLAN
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If any of the checks fail, an error message is generated and the port is not placed in the private
VLAN.
Promiscuous ports and the sc0 interface cannot participate in 802.1X.
When you configure an 802.1X port in a private VLAN, BPDU guard is automatically enabled,
trunking is set to off, and the port retains these settings after being removed from the private VLAN.
IP phone ports that support 802.1X cannot be private VLAN ports.
Creating Private VLANs, page 40-43
Verifying the Private VLAN Configuration, page 40-43
Verifying the Pre-802.1X Port Settings, page 40-44
Assigning Private VLANs to 802.1X, page 40-45
Verifying the Config-Time 802.1X Private VLAN Settings, page 40-45
Verifying the Run-Time 802.1X-Assigned Private VLAN Settings, page 40-45
Chapter 40
Configuring 802.1X Authentication
OL-8978-04
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