What is a network switch
A network switch is usually understood as a Cisco switch or Huawei switch. It is a device for expanding the network, which can provide more connection ports in the sub-network so that more computers can be connected. With the development of communication technology and the advancement of economic informatization, its features of high cost performance and practicability have quickly occupied most of the market. Therefore, Ethernet technology has become one of the important local area network networking technologies, and network switches are also become a popular switch.
The division standard of network switch
Based on different types and technologies, Cisco's switches can be compatible with multiple protocols and are recognized by everyone. Huawei switches are developed from bridges and belong to OSI Layer 2 data link layer devices. It addresses according to the MAC address, selects the route through the station table, the establishment and maintenance of the station table are carried out automatically by the switch. HP develops a forward-looking network strategy with next-generation infrastructure from Aruba Networks. Aruba's network switches are designed to support cloud, mobility and IoT, delivering the performance, automation and built-in analytics to support current and future business needs.
According to the current complex network structure, network switches are divided into access layer switches, aggregation layer switches and core layer switches. Among them, the core layer switches all adopt the chassis-type modular design, and are basically designed with 1000Base-T modules. The Ethernet switches supporting 1000Base-T at the access layer are basically fixed port switches, with 10/ 100M ports are the main ones, and 1000Base-T uplink ports are provided in the form of fixed ports or expansion slots. The 1000Base-T switch at the aggregation layer has two designs of chassis type and fixed port type at the same time. It can provide multiple 1000Base-T ports, and generally can also provide other forms of ports such as 1000Base-X. The access layer and aggregation layer switches together form a complete small and medium-sized LAN solutions.
No matter from which angle the network switch is analyzed, the ultimate purpose is to provide guidance for selecting the appropriate switch.