Nowadays, with the development of the communication industry and the development of the informationization of the national economy, the market for managed ring network switches is growing steadily. It is cost-effective, highly flexible, relatively simple and easy to implement. Ethernet technology has become an important LAN network technology today, and managed ring network switches have become popular switches. So, what is the working principle of the managed ring network switch? Next, let's follow the editor of Feichang Technology to learn more about it!
The switch works at the second layer (data link layer) of the OSI reference model. When each interface is successfully connected, the CPU inside the switch will form a MAC table by mapping the MAC address to the interface. In future communications, data packets sent to this MAC address will only be sent to its corresponding interface, not all interfaces. Therefore, the managed ring network switch can be used to divide the data link layer broadcast, that is, the collision domain; but it cannot divide the network layer broadcast, that is, the broadcast domain.
The managed ring network switch has a very high bandwidth reverse bus and internal switch matrix. All interfaces of the switch are connected to this reverse bus. After the control circuit receives the data packet, the processing interface will look up the address comparison table in the memory to determine the NIC (network card) (the hardware address of the network card) of the target MAC. On which interface the data packet is quickly transmitted to the target interface through the internal switching matrix. If the target MAC does not exist, broadcast it to all interfaces. After the switch receives the response from the interface, it will "learn" the new MAC address and add it to the internal MAC address table. The network can also be "segmented" using switches. By comparing the IP address table, the managed ring network switch allows only necessary network traffic to pass through the switch. The filtering and forwarding of the switch can effectively reduce the collision domain.
Well, the above content is the detailed introduction of the working principle of the managed ring network switch by Feichang Technology, I hope it can be helpful to everyone! Feichang Technology, a professional manufacturer of optical transceivers, optical fiber transceivers, industrial switches, and protocol converters, independently researches and develops brands, welcome to come to understand and exchange.
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