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Table Of Contents
Configuring a Guest VLAN
If the supplicant does not respond within a determined amount of time ([reauth-max + 1] * tx-period, the system assumes that
the host does not have 802.1X capability and the port is placed in the Guest VLAN.
NOTE: For more information about configuring timeouts, refer to Configuring Timeouts.
Configure a port place in the Guest VLAN after failing to respond within the timeout period using the dot1x guest-vlan
command from INTERFACE mode. View your configuration using the show config command from INTERFACE mode or using
the show dot1x interface command from EXEC Privilege mode.
Example of Viewing Guest VLAN Configuration
Dell(conf-if-Te-2/1)#dot1x guest-vlan 200
Dell(conf-if-Te 2/1))#show config
!
interface TenGigabitEthernet 21
switchport
dot1x guest-vlan 200
no shutdown
Dell(conf-if-Te 2/1))#
Configuring an Authentication-Fail VLAN
If the supplicant fails authentication, the authenticator re-attempts to authenticate after a specified amount of time.
NOTE:
For more information about authenticator re-attempts, refer to Configuring a Quiet Period after a Failed
Authentication.
You can configure the maximum number of times the authenticator re-attempts authentication after a failure (3 by default),
after which the port is placed in the Authentication-fail VLAN.
Configure a port to place in the VLAN after failing the authentication process as specified number of times using the dot1x
auth-fail-vlan command from INTERFACE mode. Configure the maximum number of authentication attempts by the
authenticator using the keyword max-attempts with this command.
Example of Configuring an Authentication-Fail VLAN
Dell(conf-if-te-2/1)#dot1x guest-vlan 200
Dell(conf-if-te 2/1)#show config
!
interface TenGigabitEthernet 2/1
switchport
dot1x authentication
dot1x guest-vlan 200
no shutdown
Dell(conf-if-te-2/1)#
Dell(conf-if-te-2/1)#dot1x auth-fail-vlan 100 max-attempts 5
Dell(conf-if-te-2/1)#show config
!
interface TenGigabitEthernet 2/1
switchport
dot1x authentication
dot1x guest-vlan 200
dot1x auth-fail-vlan 100 max-attempts 5
no shutdown
Dell(conf-if-Te-2/1)#
View your configuration using the show config command from INTERFACE mode, as shown in the example in Configuring a
Guest VLAN or using the show dot1x interface command from EXEC Privilege mode.
Example of Viewing Guest and Authentication-Fail Configurations
Dell (conf-if-te 2/1)#dot1x port-control force-authorized
Dell (conf-if-te 2/1)#show dot1x interface TenGigabitEthernet 2/1
802.1x information on Te 2/1:
802.1X
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