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