The Ethernet in the local area network uses "packet switching technology". Ethernet is a network with a star topology centered on a switching hub or switch. In order to reduce conflicts and maximize network speed and efficiency, Ethernet uses switches. to connect and organize your network.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
As far as switching technology is concerned, Ethernet in the LAN uses "packet switching technology".
There are four switching technologies: line switching, message switching, packet switching, and cell switching. Among them, packet switching has become the most widely used technology due to its large transmission capacity, fast speed and high accuracy.
Ethernet is the most common computer network in the real world. There are two types of Ethernet: the first is classic Ethernet, and the second is switched Ethernet, which uses a device called a switch to connect different computers. Classic Ethernet is the original form of Ethernet, running at speeds ranging from 3 to 10 Mbps; Switched Ethernet is the widely used Ethernet, and can run at high speeds such as 100, 1000 and 10000 Mbps. Speed, presented in the form of Fast Ethernet, Gigabit Ethernet and 10 Gigabit Ethernet respectively.
Switched Ethernet Ethernet has evolved rapidly, evolving from the typical Ethernet structure of a single long cable. The problems associated with individual cables, such as locating breaks or loose connections, drove the development of a different type of cabling model. In this model, each station has a dedicated wire connected to a central hub. A hub simply electrically connects all the connecting wires, like soldering them together. Hubs cannot increase capacity because they are logically equivalent to classic Ethernet on a single cable. As more stations join, the share of fixed capacity each station receives decreases. Eventually, LANs will become saturated.
There is another way out to handle the growing load: switched Ethernet. At the heart of switched Ethernet is a switch, which contains a high-speed backplane that connects all the ports. From the outside, switches look a lot like hubs. They are a box, usually with 4-48 ports, and each port has a standard RJ-45 connector for connecting twisted pair cables. The switch only outputs the frame to the port where the frame is intended. Adding or removing a machine can be accomplished by simply plugging or unplugging a cable, and since patch cables or ports usually only affect one machine, most errors are easy to spot. This configuration model still has the problem of a shared component failing, namely the switch itself: if all stations lose network connectivity, IT knows how to fix the problem: replace the entire switch.
Switched Ethernet is a network with a star topology centered around a switching hub or switch. It is referred to as a high-speed network built with switches as core equipment. This kind of network has been widely used in recent years.
The switched Ethernet architecture is as follows:
Switched Ethernet does not require changes to other network hardware, including cables and user network cards. It only needs to use switching switches to change the shared HUB, saving users network upgrade costs.
Can switch between high-speed and low-speed networks to achieve collaboration between different networks. Most switched Ethernets have 100MBPS ports, which are connected to the server through the corresponding 100MBPS network card, temporarily solving the 10MBPS bottleneck and becoming the preferred solution for network LAN upgrades.
It provides multiple channels at the same time, providing more bandwidth than traditional shared hubs. Traditional shared 10MBPS/100MPS Ethernet uses broadcast communication, which can only be carried out between a pair of users at a time. Communication must be retried if a collision occurs, while switched Ethernet allows transmission between different users. For example, a 16-port Ethernet switch allows 16 stations to communicate across 8 links.
Especially the advantages in time response make LAN switches very popular. It costs less than a router but has
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