The WAN switch mainly provides the basic communication platform, and is generally used in the telecommunications field. LAN switches are generally used to connect terminal devices, such as PCs and network printers, and are generally used in local area networks.
In terms of transmission media and transmission speed, LAN switches can be divided into Ethernet switches, Fast Ethernet switches, Gigabit Ethernet switches, ATM switches, FDDI switches, and token ring switches. These switches are applicable to Ethernet Networks, Fast Ethernet, FDDI, ATM, and Token Ring networks. Among all networks, the enterprise network built by Ethernet switches is the most common.
The role of network switches
A network switch is a device that performs information exchange functions in a communication system. It can provide an exclusive electrical signal path for any two network nodes of the access switch. The main functions of the switch include physical addressing, network topology, error checking, frame sequence, and flow control. At present, the switch also has some new functions, such as support for VLAN (virtual local area network), support for link aggregation, and some even have the function of a firewall.
Classification of network switches
The following 4 switch types:
(1) PoE + series switches
PoE + is the abbreviation of Power over Ethernet Plus, referred to as Enhanced Power over Ethernet, which is an upgraded version of POE. The POE + switch refers to the technology that can provide DC power for such devices while transmitting data signals to some based terminals without any changes to the existing Ethernet Cat5 cabling infrastructure. Switch. It is mainly used in the access layer of small enterprises in the network architecture.
(2) Photoelectric hybrid switch
The photoelectric hybrid switch means that the switch port has both an optical port for inserting optical modules and an RJ45 electrical port for inserting network cables. Our photoelectric hybrid switches are mainly L2, L2 + switches, which are mainly used in the access layer and aggregation layer of small enterprises in the network architecture.
(3) S5800 series switches
S5800 series switches are mainly used in data center and metro Ethernet applications. The switch runs the mature with independent intellectual property rights, and supports various functions such as L2 / L3 / Data Center / Metro Ethernet, including comprehensive protocols and management monitoring programs. In the network architecture, it is mainly applied to the core layer, spine, and leaf of small and medium-sized enterprises.
(4) N series switches
The N series is a high-performance, high-density next-generation switch. N series switches are divided into bare metal and ICOS systems. The products use Broadcom chips and Intel CPUs, high-end configurations, high performance and low price. It is mainly used in the core layer of Internet companies or data center networks, Spine, and Leaf in the network architecture.
