This read-only field reports the current controlled-port status for this session, that is, whether traffic from this authenticated client is being allowed or blocked through the 802.1X controlled port. An administrator checks this as the ultimate practical indicator of whether a given device actually has network access right now, regardless of what the underlying state machines say. For example, even if PAE state shows authenticated, checking this OID confirms whether the controlled port has actually opened for that client's traffic.