In Portal authentication application, if communication between the device and Portal server is interrupted due to a network failure or Portal server failure, online Portal users cannot go offline normally. As a result, user information on the device may be different from that on the Portal server, causing inaccurate accounting.
For Layer 3 Portal authentication, the device currently can synchronize user information with the Huawei Agile Controller-Campus or iMaster NCE-Campus server. If the device connects to other Portal servers, user information may fail to be synchronized and users cannot go offline in real time. You can run the cut access-user command or use the NMS or RADIUS DM to force users to go offline.