Different application scenarios between Router and Switch
Switch: Mainly used in internal core access, internal data exchange, and more commonly used in LAN.
Router: È una presa di rete, responsabile principalmente dell'interconnessione con gli operatori, ed è più comunemente usato per connettersi a reti esterne.
Ad esempio, in un ambiente di rete possono essere presenti migliaia di switch, ma il numero di router industriali utilizzati nello stesso ambiente può essere solo a una cifra. In altre parole, se si vuole comunicare da un edificio adibito a uffici a un edificio adibito a dormitorio, è sufficiente utilizzare uno switch; ma se si vuole comunicare da un edificio adibito a uffici a un'officina distante o a una catena di montaggio di una fabbrica, la maggior parte dei router viene utilizzata per la comunicazione remota.
Differenze funzionali diverse
Switch: La sua funzione principale è lo scambio di dati interni e la gestione della sottorete IP. Non ha la funzione di connettersi alla rete esterna;
Router: Attraverso la funzione di connessione alla rete esterna, assiste la trasmissione dei dati di altri dispositivi, come il server seriale o il PLC, ecc.
Usually routers have AP functions, firewalls, routing protocols, etc. Industrial routers have VPN private network tunnels to protect private data transmission. For example, this function is often used in the financial industry. Because routers are rich in functions, they are often used in traffic aggregation environments.
Di solito gli switch non hanno queste funzioni, ma alcuni switch hanno anche funzioni di firewall, come una certa serie di Cisco.
Requisiti di interfaccia diversi
Interruttore: La maggior parte degli switch è utilizzata per le porte Ethernet, le porte elettriche, le porte ottiche, ecc;
Router: principalmente porta LAN o WAN. Alcuni scenari industriali richiedono anche una porta seriale RS232, come USR-G800 V2.
In most cases, Routers are used in conjunction with switches. The Switch is responsible for managing the subnet and exchanging internal data, and the router is responsible for connecting to the external network. For example, the intelligent parking lot transmission solution: wireless networking is optional at the gate, and WAN 4G networking is optional indoors. The network connection is fast, the network is smooth and the data is complete. Remote management is more convenient. Accurately transmit parking space status data to create a comfortable parking experience.
Technical Principles Overview
The switch works at the data link layer and is primarily responsible for data forwarding within the LAN. It recognizes and processes data packets through the MAC address table to ensure that the data reaches the target device quickly. In the work of the switch, full-duplex communication technology is used so that multiple devices can exchange data at the same time. This reduces network conflicts and improves overall efficiency.
Routers, on the other hand, work at the network layer and are responsible for data transmission between different networks. Through IP addresses, routers are able to determine the best forwarding path to deliver packets accurately to their destinations. Routers are not only capable of connecting LANs to WANs, but also support Network Address Translation (NAT), which allows multiple devices to share a common IP address. In addition, routers support a variety of routing protocols and dynamically update routing information to ensure the efficient transmission of data in complex networks.
Working Together
In real-world network environments, switches and routers often work together to form an efficient network architecture. Switches are responsible for fast communication between devices on the LAN, while routers handle traffic from external networks. Through this collaboration, the network is able to achieve a stable and secure connection that meets the communication needs of different scenarios.
