![]() Thus, there should be a switching matrix at the internal core of the switch, providing a path for communication between any two ports, or a fast switching bus, so that the data frame received by any port is sent from other ports. It provides a low-latency and low-overhead path for forwarding data frames from one port to another. The Ethernet switch we often talk about is a multi-port second-layer network device based on bridge technology. When it is used to describe the equipment in the third layer, it refers to a routing device. When it is used to describe the equipment in the second layer of the data network, it refers to a bridge device. Thus, “switch” is a word with extensive meaning. Therefore, all devices that meet this definition can be called switch devices. the switch is a technical concept, that is, to complete the forwarding of signals from the device inlet to the outlet. The equipment that completes the work is a telephone switch. The word switch first appeared in telephone systems, specifically referring to the switch of voice signals between two telephones. From bridge to route to ATM to telephone system, it can be applied in any situation. “Switch” is the word with the highest frequency in today’s network. The Main Differences Between a Layer 3 Switch and a Router.This article mainly explains layer 3 switch and router and their differences. Therefore, network interconnection generally refers to the network that uses a switch and router for interconnection. High-level gateways are currently used less due to their complexity. It is generally not called network interconnection when the relay system is a transponder, because it only expands a network. The relay system above the network layer is the gateway.The brouter, the mixture of bridge and router, has the functions of both bridge and router.The network layer (the third layer, layer 元) relay system: router.The physical layer (that is, the first layer, layer L1) relay system: repeater.There can be the following five types of relay systems depending on the level of the relay system: Some intermediate devices (or intermediate systems) are used when connecting networks, which is called a relay system in ISO terms. Therefore, when it comes to “interconnection,” it is usually implied that these interconnected computers can communicate, that is to say, functionally and logically, these computer networks have formed an extensive network or the Internet. If several computer networks are only physically connected and cannot communicate with each other, then the “interconnection” has no practical significance. Computer networks are often formed by interconnecting many different types of networks. ![]()
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