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116 | 802.1X
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To place a port in one of these three states:
Figure 7-8 shows configuration information for a port that has been force-authorized.
Figure 7-8. Configuring Port-control
Re-Authenticating a Port
Periodic Re-Authentication
After the supplicant has been authenticated and the port has been authorized, the authenticator can be
configured to re-authenticate the supplicant periodically. If re-authentication is enabled, the supplicant is
required to re-authenticate every 3600 seconds, but this interval can be configured. A maximum number of
re-authentications can be configured as well.
To configure a re-authentication or a re-authentication period:
Step Task Command Syntax Command Mode
1 Place a port in the ForceAuthorized,
ForceUnauthorized, or Auto state.
dot1x port-control {force-authorized |
force-unauthorized | auto}
Default: auto
INTERFACE
Step Task Command Syntax Command Mode
1 Configure the authenticator to
periodically re-authenticate the
supplicant.
dot1x reauthentication [interval] seconds
Range: 1-65535
Default: 60
INTERFACE
FTOS(conf-if-gi-2/1)#dot1x port-control force-authorized
FTOS(conf-if-gi-2/1)#do show dot1x interface gigabitethernet 2/1
802.1x information on Gi 2/1:
-----------------------------
Dot1x Status: Enable
Port Control: FORCE_AUTHORIZED
Port Auth Status: UNAUTHORIZED
Re-Authentication: Disable
Untagged VLAN id: None
Tx Period: 90 seconds
Quiet Period: 120 seconds
ReAuth Max: 2
Supplicant Timeout: 30 seconds
Server Timeout: 30 seconds
Re-Auth Interval: 3600 seconds
Max-EAP-Req: 10
Auth Type: SINGLE_HOST
Auth PAE State: Initialize
Backend State: Initialize
Auth PAE State: Initialize
New Port-control State