(Huawei Enterprise is one of the largest telecommunication equipment manufacturers in China. In terms of network products, Huawei complies with the reliability scheme of telecommunication products and develops network products with carrier-grade reliability. Including the hot backup of the main control board, the hot swap of the interface board, the storage of components, the IQC inspection of the whole machine when it leaves the factory, and the electromagnetic compatibility scheme. Huawei QuidwayNetEngine series backbone routers and S6000 core switches, in hardware and software solutions)