(Many enterprise routers have high invisibility. If you are not careful, it is difficult to detect, which is a headache. If the functions of enterprise routers are degraded, the network is suspended, etc., a lot of manpower and material resources will be hurriedly used. To make up for it, it would be very laborious. In other cases, if there is an unexpected situation such as lightning, but there is no sufficient precautionary method for the enterprise router in advance, it may create a good opportunity for the user to replace the new device.)