How a Gigabit Ethernet switch works

Vswitches have great superiority over hubs and routers, so their application and development speed is much higher than that of vrouters. Now there are various vswitches on the market, in order to meet the needs of users at different stages, the text will give your own opinions on the Gigabit Ethernet switch.

I. Division from network coverage

1. WAN switches

WAN switches are mainly used in wide-area networks in areas such as the interconnection of telecom man networks and Internet access. They provide basic communication platforms,

2. LAN switches

This type of switch is our common switch and also our learning focus. LAN switches are used in local networks to connect terminal devices, such as servers, workstations, hubs, routers, network printers, and other network devices. Provides high-speed independent communication channels. In fact, LAN switches can be divided into multiple different types of switches. Next we will continue to introduce the main classification standards for LAN switches,

Ii. Division based on transmission media and transmission speed

According to the network transmission medium used by the switch and the transmission speed, we can generally divide the LAN switch into Ethernet switch, Fast Ethernet switch, Gigabit G bit) Ethernet switch, 10 Gigabit 10G bit) ethernet switch, FDDI switch, ATM switch, and ring switch.

• In-depth analysis of vswitch MAC Address Access Control Problems
• Analyze the relationship between a wireless switch and a hub
• Can a smart switch replace a hub?
• Why does a wireless switch replace a hub?
• Brief Introduction to classification and summary of smart Switches

1. Ethernet Switch

The first thing to note is that the "Ethernet switch" here refers to the switch for Ethernet with bandwidth below Mbps, in fact, we will also talk about a "Fast Ethernet switch", "Gigabit Ethernet switch", and "10 Gigabit Ethernet switch" which are actually Ethernet switches, however, they adopt different protocol standards or transmission media, and their interface forms may also be different.

Ethernet switches are the most common and cheap. They are well-equipped and widely used, and can be seen in large and small LAN networks. Ethernet includes three network interfaces: RJ-45, BNC and AUI, the transmission media used are: twisted pair wire, thin coaxial cable and coarse coaxial cable.

Do not think that Ethernet is a RJ-45 interface, but twisted pair cable type RJ-45 interface in the network equipment is very common. Of course, the current vswitches cannot be all BNC or AUI interfaces, because currently, the networks using coaxial cables as transmission media are seldom seen, generally, on the basis of RJ-45 interface, BNC or AUI interface is provided to balance the network connection of coaxial cable media. 1 is an Ethernet switch with RJ-45 and AUI interfaces.

This type of switch is used for Mbps Fast Ethernet. Fast Ethernet is a network technology that implements Mbps transmission bandwidth on common twisted pair wires or optical fiber cables. It should be noted that fast Ethernet is regarded as a pure port with 10/100 MPs bandwidth. In fact, it is basically Mbps adaptive.

In general, this type of Fast Ethernet switch usually uses a pair of wires. Some Fast Ethernet switches may leave a few fiber interfaces "SC" in order to ensure network interconnection with other optical transmission media ". A Gigabit Ethernet switch is used in a new type of network-Gigabit Ethernet.

Some people call this kind of network "gigabit (GB) Ethernet" because it can reach 1000 Mbps. It is generally used for the backbone network segment of a large network, the transmission medium has two kinds of optical fiber, twisted pair wire, the corresponding interface is "SC" and "RJ-45" interface.

The 10 Gigabit Ethernet switch is mainly used to adapt to the access of the 10 Gigabit Ethernet network. It is generally used on the backbone network segment and uses the optical fiber as the transmission medium. The interface method is also the optical fiber interface. This type of switch is also called a 10G Ethernet switch.

At present, 10G Ethernet technology is still in the initial stage of research and development, and the price is very expensive. Generally, it costs 2-9 US $). Therefore, the practical application of 10G Ethernet in various users is not very common, most enterprise users have already adopted a mature Gigabit Ethernet technology, and believe that this speed can meet enterprises' data exchange needs.