The main function of the hub is to regenerate, shape and amplify the received signal, so as to expand the transmission distance of the network, and at the same time concentrate all nodes on the node centered on it.
Extended data
Working characteristics of wheel hub:
According to the IEEE802.3 protocol, the role of hub is to randomly select the devices at a certain port and let it monopolize all the bandwidth to communicate with the upstream devices (switches, routers or servers, etc.). ) hub.
It can be seen that the hub has the following two characteristics when working.
1, Hub is just 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.
2.Hub only communicates with its uplink 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 the uplink devices.
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