Communication method, communication apparatus, and communication system

Abstract

This disclosure provides a communication method, a communication apparatus, and a communication system, to improve Ethernet communication performance. The method may be performed by a first device, where the first device is connected to a second device through two twisted pairs or four twisted pairs, and the method includes: when the two twisted pairs are not faulty, sending first information to the second device, where the first information represents that the first device supports a variable-rate communication mode, a communication rate corresponding to the variable-rate communication mode is less than a first communication rate corresponding to a first communication mode and is greater than or equal to a second communication rate, and the first communication mode is a communication mode using the four twisted pairs; and receiving second information from the second device, where the second information represents that the second device supports the variable-rate communication mode.

Dependencies are inferred from the claim text.