When attempting to re-authenticate and the RADIUS server is unavailable, the re-authentication attempt times out and by default the session terminates. The re-authentication timeout action can be set to none. If the re-authentication timeout action is set to none, the session remains authenticated and provisioned according to the prior successful RADIUS authentication response.
It is recommended that you not set the re-authentication timeout action to none when using 802.1x authentication.
Use the set multiauth reauth-timeout-action {terminate | none} command to set the re-authentication timeout action for the device.