The role of network switches
A network switch is a device that expands a network and provides more connection ports for connecting more computers in a subnet. It is generally used for LAN WAN connections. With the development of the communication industry and the advancement of national economic informatization, the network switch market has steadily increased. It has the characteristics of high performance to price ratio, high flexibility, relative simplicity, and easy implementation. So Ethernet technology has become the most important LAN networking technology today, and network switches have also become the most popular switches.
1. Connect to the same type of network
When the network scale expands, simply extending the network cable has become unrealistic. And for different LANs, in order to achieve data transmission and share network resources with each other, it is necessary to have dedicated connection devices to achieve network expansion. At the same time, the increase of sites in the network, the expansion of geographical scope, and the growth of business volume have prompted the rapid development of network interconnection.
The rapid development of network interconnection has led to the emergence of network switching technology, and network switches have also emerged as the times require. A positive dimensional switch is a device that performs information exchange functions in a communication system.
2. Interconnecting different types of networks
In addition to being able to connect to the same type of network, switches can also serve as interconnections between different types of networks. Nowadays, many switches can provide high-speed connection ports that support fast Ethernet or FDDI, used to connect other switches in the network or provide additional bandwidth for critical servers with high bandwidth usage.
3. Provide fast network services
Sometimes, in order to provide faster access speed, we can directly connect some important network computers to the ports of the switch. In this way, the key servers and important users of the network have faster access speeds and support greater information traffic.
The main functions of a switch include physical addressing, network topology, error checking, frame sequence, and flow control. At present, switches also have some new features, such as support for VLANs (virtual local area networks), support for link aggregation, and even some have firewall functionality.
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