Open the AAA Nodal Radius test case, on the AAA>RADIUS tab, enable the Reauthenticate option in the Authentication Settings pane and adjust the interval in seconds to your test needs.
In the Authentication Settings pane, enable EAP and click on the EAP Settings button to configure the EAP AKA’ as shown below.
In case the EAP AKA' configuration requires an EAP Identity different than the default, configure the Initial Fast Reauth ID field in the AAA Nodal>AAA>NAS App>EAP Settings window with the required ID as shown below