Main functions of repeater

The main function of repeater is to amplify signals, compensate signal attenuation and extend network transmission distance in LAN environment.

Repeater works in the physical layer, which is the link and amplification of physical layer lines and is not responsible for processing any data. It is suitable for the interconnection of two same networks, and its main function is to extend the network transmission distance by forwarding or forwarding data signals.

Repeater plays the role of signal forwarding, which is equivalent to the role of sound conduit. It can be used not only for data forwarding, but also for advanced relaying such as ATM asynchronous frame relay, and also for relaying sessions and application services. Wireless network and optical fiber network are the most frequently used networks, and relay is not necessarily one-to-one transmission, but also many-to-many transmission.

Repeater is a complex component in Axure, which is relatively difficult to use but powerful. Besides direct multiplexing and batch operation of data, data can also be added, deleted, filtered and modified. After mastering the repeater, you can make many common dynamic effects.

principle of operation

Due to the influence of transmission line noise, digital signals or analog signals carrying information can only travel a limited distance. The function of the repeater is to regenerate and transmit the received signal, thus increasing the transmission distance of the signal. It connects two or more segments of the same network.

For example, Ethernet usually uses repeaters to extend the cable length of the bus. The maximum length of each segment of standard thin cable Ethernet is185m, and there can be at most 5 segments. Therefore, after adding repeaters, the maximum network cable length can be increased to 925 meters. Generally speaking, the network part at both ends of the repeater is a network segment, not a subnet.

Repeater can connect two LAN cables, retime and regenerate the digital signals on the cables, and then send them out. These functions are typical functions of the first physical layer in the OSI model. The role of repeaters is to increase the coverage of local area networks. For example, the Ethernet standard stipulates that the maximum length of a single signal transmission cable is 500 meters.