HUB hub belongs to the basic equipment in data communication system. Like twisted pair and other transmission media, it does not need any software support or only needs to manage the hardware equipment supported by software. Widely used in various network connection environments.

The hubs are electrically interconnected. When the environment for maintaining LAN is logical bus or ring structure, a physical star or tree network structure can be established with the hub. In this regard, the hub acts as a multi-port repeater. In fact, the hub is actually a kind of repeater. The only difference is that the hub can provide more port services, so the hub is also called a multi-port repeater.

Extended data

Hub is a multi-port signal amplification device. When a port receives a data signal in operation, the signal has been attenuated in the transmission process from the source port to the hub, so the hub shapes and amplifies the signal to regenerate (restore) the attenuated signal to the state when it was sent, and then forwards it to all other ports in operation.

As can be seen from the working mode of Hub, it only plays the role of signal amplification and forwarding in the network, with the purpose of expanding the transmission range of the network, but it does not have the directional transmission ability of signals, and it is a standard * * * shared device.

Hub only communicates with its upstream devices (such as superior Hub, switch or server), and there is no direct communication between ports at the same level, but broadcasts information to all ports through upstream devices.

Hub is mainly used to set up a * * * shared network, which is the most economical scheme to directly solve the problem from server to desktop. In a switched network, the hub is directly connected to the switch and sends the data of the switch port to the desktop. Hub networking is flexible. It is located on a star node of the network, and centrally manages the workstations connected to the node, so that the faulty workstations will not affect the normal operation of the whole network, and users can freely join and quit.

Baidu encyclopedia -HUB

Baidu encyclopedia -HUB hub