Administrator Guide

Re-Authenticating a Port
You can congure the authenticator for periodic re-authentication.
After the supplicant has been authenticated, and the port has been authorized, you can congure the authenticator to re-authenticate the
supplicant periodically. If you enable re-authentication, the supplicant is required to re-authenticate every 3600 seconds, but you can
congure this interval. You can congure a maximum number of re-authentications as well.
To congure re-authentication time settings, use the following commands.
• Congure the authenticator to periodically re-authenticate the supplicant.
INTERFACE mode
dot1x reauthentication [interval] seconds
The range is from 1 to 31536000.
The default is 3600.
• Congure the maximum number of times that the supplicant can be re-authenticated.
INTERFACE mode
dot1x reauth-max number
The range is from 1 to 10.
The default is 2.
Example of Re-Authenticating a Port and Verifying the Conguration
The bold lines show that re-authentication is enabled and the new maximum and re-authentication time period.
Dell(conf-if-gi-2/1)#dot1x reauthentication interval 7200
Dell(conf-if-gi-2/1)#dot1x reauth-max 10
Dell(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: Enable
Untagged VLAN id: None
Tx Period: 90 seconds
Quiet Period: 120 seconds
ReAuth Max: 10
Supplicant Timeout: 30 seconds
Server Timeout: 30 seconds
Re-Auth Interval:7200 seconds
Max-EAP-Req: 10
Auth Type: SINGLE_HOST
Auth PAE State: Initialize
Backend State: Initialize
Auth PAE State: Initialize
Conguring Timeouts
If the supplicant or the authentication server is unresponsive, the authenticator terminates the authentication process after 30 seconds by
default. You can congure the amount of time the authenticator waits for a response.
To terminate the authentication process, use the following commands.
• Terminate the authentication process due to an unresponsive supplicant.
INTERFACE mode
802.1X
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