Perform the steps given below to enable RADIUS authentication.
Click Security > RADIUS Settings in the navigation pane. The View RADIUS preview pane is displayed.
Select theRADIUS Authentication as 'Enable'. For more information, refer to Provision New RADIUS Server parameters table in the topic Provisioning RADIUS Server.
Click Submit. A confirmation message is displayed.
Click Accept Valid Modifications. A 'Successfully Modified' message is displayed.