- Jun 22, 2017 -
What is a repeater
A repeater is a device that connects a network line and is used for two-way forwarding of physical signals between two network nodes. Repeater is the most simple network interconnection equipment, mainly to complete the physical layer function, responsible for the two nodes in the physical layer by bit to pass information to complete the signal copy, adjust and enlarge function, in order to extend the length of the network. Due to the loss, the signal power transmitted on the line will gradually decay, attenuation to a certain extent will cause the signal distortion, it will lead to receiving errors. The repeater is designed to solve this problem. It completes the physical line connection, the attenuation of the signal to enlarge, keep the same as the original data.
Under normal circumstances, the two ends of the repeater is connected to the same media, but some repeaters can also complete the transfer of different media work. Theoretically, the use of repeaters is infinite, so the network can be infinitely extended. In fact, this is not possible, because the network standard in the delay range of the signal made a specific provision, the repeater can only be within the scope of this effective work, otherwise it will cause network failure.
The role of the repeater
Repeater (Repeater) work in the OSI's physical layer, is the center of all nodes on the LAN, its role is to amplify the signal, compensation signal attenuation, support long-distance communication.