Repeater, also known as repeater, is the simplest but most used interconnection equipment. Repeater is only suitable for Ethernet and can interconnect two or more Ethernet segments. Repeater only regenerates and amplifies the data signal transmitted on the cable, and then forwards it to other cable segments. For protocols above the link layer, there is no difference between several cables interconnected by repeaters and a single cable (except that the interrupter itself will cause a certain time delay).
Repeater is a network interconnection device on the physical layer, and its function is to regenerate the signal (that is, to amplify and shape the original signal).
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