What is the trend of GE switches in China?

The most important function of a Gigabit Switch is to speed up data forwarding within a large local area network. The routing function is also used for this purpose, all packets in the same range are mapped by the server switch and transmitted between the user and the same server.

A lan switch has many ports, each of which has its own dedicated bandwidth and can connect to different CIDR blocks. The communication between the ports of the vswitch is parallel, which greatly improves the information throughput. To further improve performance, each port can connect to only one device.

To interconnect Ge switches or connect to high-end servers, LAN switches generally have one or several high-speed ports, such as 155 M Ethernet port, FDDI port, or m atm port, this ensures the transmission performance of the entire network.

Users who share a LAN through a hub not only share bandwidth, but also compete for bandwidth. Some users may need more bandwidth to reduce the available bandwidth of other users, or even be forced to wait, thus delaying communication and information processing. Use vswitch's network differential segment technology.

Users of a large shared LAN can be divided into multiple independent network segments to reduce the number of users competing for bandwidth and increase the available bandwidth of each user, thus alleviating the congestion of the shared network. Because the switch can quickly and directly send information to the destination, it can greatly increase the speed and bandwidth, protect users' previous investment in media, and provide good scalability, therefore, a switch is not only an ideal alternative to a bridge, but also an ideal alternative to a hub.

Compared with bridges and hubs, vswitches improve the performance in the following aspects:

1) The information throughput of the switch is improved by supporting parallel communication.

2) divide users on a traditional large LAN into several working groups. Each port connects to a device or a working group, effectively solving the congestion. This method is called Micro-segmentation in the network differential segment.

3) The emergence of the virtual network firewall ai lan technology brings more flexibility to the use and management of switches. We will introduce virtual networks later.

4) The port density can be comparable to that of a hub. Generally, the network system has one or more servers, and most of them are common clients. The client needs to access the server. As a result, the communication and transaction processing capabilities of the server become the key to the overall network performance.

The switch improves the performance of the entire network by increasing the speed of the port connecting to the server and the size of the corresponding frame buffer to meet user requirements. Some high-end switches also adopt full duplex technology to further increase the bandwidth of the port.

In the past, network devices basically used half-duplex methods. That is, when a host sends data packets, it cannot receive data packets. When receiving data packets, it cannot send data packets. Because full duplex technology is used, that is, the host can receive data packets while sending data packets, the normal 10 M port can be changed to 20 M port, and the normal 200 M port can be changed to M port, this further improves the information throughput.

A traditional switch is essentially a multi-port bridge with traffic control capabilities, that is, a traditional two-layer switch. Introducing the routing technology into a vswitch can complete network-layer routing selection, which is called layer-3 switching. This is a new development of vswitches.

Two-layer switch) working principle a switch is a networking device that works on the link layer, and each port of the switch has the bridging function, each port can be connected to a LAN or a high-performance website or server, so that you can learn the connection status of each port through self-learning. All ports are controlled by dedicated processors and forwarded through the control management bus.

A Gigabit Switch is a data link layer device that connects multiple physical lan cidr blocks to a large network. Similar to a network, the transmission and overflow of a switch is based on a MAC address. Because the switch is implemented by hardware, the transmission speed is very fast. When data packets are transmitted, the switch either uses the storage-forwarding and switching mode or the off-switching mode. There are many types of switches, including ATM switches, LAN switches, and different WAN gigabit switches.

ATMAsynchronous Transfer Mode) vswitches provide high-speed information exchange and scalable bandwidth capabilities for Working Groups, enterprise network hubs, and many other fields. The ATM switch supports speech, video, and text data applications and can be used to exchange fixed-length information units, also known as elements ). An enterprise network is composed of multiple LANs connected through an ATM hub link.

A lan switch is used to connect multiple lan cidr blocks. It performs dedicated non-conflict communication between network devices and supports conversations between multiple devices. LAN switches are mainly used to exchange data frames at high speed. A 0 Mbps Ethernet is interconnected with a 100 Mbps Ethernet through a LAN switch.