If communication is interrupted because the network between the device and Portal server is disconnected or the Portal server is faulty, online Portal authentication users cannot go offline. Therefore, user information on the device and on the Portal server may be inconsistent and accounting may be inaccurate.
This function is valid for only external Portal servers.
For Layer 3 Portal authentication, the device currently can synchronize user information with the Huawei Agile Controller-Campus or iMaster NCE-Campus server. When the device is connected to other Portal servers, user information may fail to be synchronized and users cannot go offline in real time. In this case, you can run the cut access-user command or use the NMS or RADIUS DM to force users to go offline.