(5105 is also the user name and password below. It should be noted that 5105 only needs three boards, board0, board1, board2; board0 is the upstream board, which is the broken board, and the other two are ADSL boards. showboard0 to see if the status of the upstream Ethernet port is normal. In short, it is very simple. If there is any problem, please call me at 62002365))