The CloudEngine 12800 uses industry-leading Cluster Switch System (CSS) technology, which can virtualize two physical switches into one logical switch to facilitate network management and improve reliability. This document describes the configurations of virtualization, including stack and VS. Huawei switches already help customers achieve success in industries such as finance, Internet, retail, education. On a new enterprise network, access devices are required to provide ample ports, and the network structure must be simple for easy configuration and management. In Figure 3-28, DeviceA, DeviceB, and DeviceC set up a stack in a ring topology. The S6730-H-V2 is used as an example. Figure 3-28 Network. Huawei CloudEngine 12800 series switches use an advanced hardware architecture design, providing as much as 178Tbit/s (scalable to 1032 Tbps) switching capacity and has up to 576*100GE, 576*40GE, 2,304*25GE, or 2,304*10GE line-rate ports. Using Huawei's VRP8 software platform, CloudEngine 12800. In this scenario, IP addresses of the interfaces connecting the core switch to the BRASs and firewalls and OSPF need to be configured on the core switch, so as to implement connectivity between the user network to egress network through the core switch.