Allied Telesis AT-S79 - Manual (Page 318)

Chapter 33: 802.1x Port-based Network Access Control
318 Section II: Using the Web Browser Interface
Re-authentication Period.
Specifies the time period between periodic reauthentication of the
client. The default value is 3600 seconds. The range is 1 to 65,535
seconds.
Re-authentication Status.
Specifies if reauthentication should occur according to the
reauthentication period. The options are Enabled or Disabled.
4. When you are finished configuring the parameters, click Apply at the
bottom of the 802.1x Configuration page.
5. If the port control setting is Auto and you want to return the EAPOL
machine state on the port to the initialized state, select Yes for the
Initialize parameter and click Apply.
6. If the port control setting is Auto and you want the node connected to
the port to reauthenticate with the RADIUS server, select Yes for the
Re-auth Initialize parameter and click Apply.