It is a powerful backbone switch in the center of the network core layer, which centralizes multiple aggregation switches to the core and implements LAN routing. This white paper introduces the following three types of network switches and further discusses the selection criteria for each switch. In these switches, the data routed and switched. Core Switches are located at the core layer and are responsible for high-speed data switching and routing. It usually has powerful processing capabilities, high. With multiple industry-leading intellectual properties and patents, Huawei provides more than a hundred switch models in more than 10 series, including access, aggregation, and core switching.