In a NE40E router, running VRP 5.3 V300R002, it is found that one LPU of LPUB type appears with unregistered - abnormal state when the display device command is used. Also it is found that the board is resetting continuously and the following message is present in the router's log:
%%01SRM/3/MBUSREG(l): SlotIDX, MonitorBUS node register!
%%01SRM/3/PWRONFINISH(l): SlotIDX, board power-on finish!
%%01SRM/4/STARTMODE(l): LPUX send startmode: cold start!
The files of LPU board on slot X are the latest version, and would be reserved!
Startup download for LPU board on slot X finished.
%%01SRM/3/LPURESET(l): LPUX reset, the reason is: LPU report PE initialize error, and reset lpu!
Replace the board using another one.
The message in the log indicates that this problem is caused because the SD588 chip on the board is abnormal.