Abstract: A port auto-negotiation method and a device used for implementing port auto-negotiation between high-speed Ethernet devices are provided. The method performed by a first device includes: configuring a first port of the first device as four subports, where each of the four subports includes a differential transceiver channel; determining from the four subports, at least one subport whose differential transceiver channel operates normally, and selecting some or all of the at least one subport as a normal subport; sending capability information of the first port to a second device by using the normal subport, and receiving, by using the normal subport, capability information of a second port of the second device; and determining operating statuses of the four subports based on the capability information of the first port and of the second port.

Abstract: A network device and a vertical interface are disclosed. The network device includes a panel (31), a printed circuit board PCB (32), and N vertical interfaces (33). The vertical interface is an interface whose width is less than a height. The panel is connected to the PCB, and the panel includes N vertical openings, where N is greater than or equal to 2. Each of the N vertical interfaces includes a housing (331), a connection component (332), and a connector (333). The housing is configured to accommodate the vertical interface into the panel by using one of the N vertical openings on the panel. The connection component is configured to connect the vertical interface to the PCB. The connector is configured to transmit a signal to the PCB by using the connection component.

Abstract: A port auto-negotiation method and a device are used for implementing port auto-negotiation between high-speed Ethernet devices. The method performed by a first device includes: configuring a first port of the first device as four subports, where each of the four subports includes a differential transceiver channel; determining from the four subports, at least one subport whose differential transceiver channel operates normally, and selecting some or all of the at least one subport as a normal subport; sending capability information of the first port to a second device by using the normal subport, and receiving, by using the normal subport, capability information of a second port of the second device; and determining operating statuses of the four subports based on the capability information of the first port and of the second port.

Abstract: Embodiments of the present invention disclose a device information backup method, device, and system for information backup between a first device and a second device. The first device and the second device are directly connected through a cable, and the first device acquires, from the second device through the cable, information to be backed up and back up the information to be backed up. In this way, information backup can be completed quickly and simply, and shortcomings of a poor reliability and a poor security of a pluggable storage medium are avoided.

Abstract: Embodiments of the present invention disclose a device information backup method, device, and system for information backup between a first device and a second device. The first device and the second device are directly connected through a cable, and the first device acquires, from the second device through the cable, information to be backed up and back up the information to be backed up. In this way, information backup can be completed quickly and simply, and shortcomings of a poor reliability and a poor security of a pluggable storage medium are avoided.