2. Switches classification:

Broadly speaking, network switch There are two kinds: wide area network Switch and LAN switch . Wide area network switches are mainly used in the telecommunications field, providing the basic platform for communication. and LAN switch It should be used in local area network for connection. terminal equipment Such as PC and network printing Machine and so on. from Transmission medium and transmission speed Can be divided into Ethernet switch , Fast Ethernet switch , Gigabit Ethernet Switchboard FDDI switch , ATM switch and Token ring Switches and so on. from scale Applications can be divided into Enterprise Switch , departmental switches and Work group Switch And so on. The scale of each manufacturer is not exactly the same. Generally speaking, the enterprise level switches are rack mounted. The department level switches can be rack mounted (fewer slot) or fixed configuration, while the workgroup level switches are fixed configurations (simpler functions). On the other hand, from the scale of application, as a backbone switch, the switch supporting 500 large enterprises with information points above is used as an enterprise level switch. It supports 300 switches in the medium sized enterprises below the information points as departmental switches, and supports 100 switches within the information points as workgroup level switches.