Network cabinet data center wiring is different from traditional building wiring. The cable length is shorter and the performance requirements are higher. Unlike ordinary offices with only two or four terminals, a cabinet may need 24, 48, 96 or even more network cables or optical fibers. Network cabinet top aggregation is the latest wiring method, but it can also be regarded as a variant of tail aggregation. The convergence at the top of the network cabinet depends on the server configuration density, and we will discuss how to choose the corresponding cabling scheme for the data center cabling architecture. If a computer network cabinet is full of servers, the first choice is to install an access layer switch on each computer network cabinet. If the server has dual network cards and fault tolerance requirements, you can consider installing additional switches. Usually, another low-level switch is installed for system management. All switches are connected to the core network through optical fiber jumpers, which is similar to end-of-line aggregation. Therefore, the convergence at the top of the network cabinet has the same effect as the convergence at the end of the line, but it is more conducive to expansion-you can install cheap switches on each network cabinet according to actual needs, or you can complete the migration through reconfiguration. The impact of a single switch failure is much smaller than that of a large switch failure at the end of the line. When you encounter a blade server that needs to use a specific type of switch, aggregation at the top of the network cabinet is your best choice. In this case, all we have to do is connect the optical fiber to the core network. Therefore, as long as each computer network cabinet has the same optical fiber equipment, network convergence can be realized. Sometimes you will even encounter a "mixed" installation, but the overall structure will not be affected. You just need to connect different blades to different switches. Usually, ordinary optical fiber equipment can meet high-performance applications.