Abstract: A data transmission method, performed by a receive end, includes: receiving notification information that is about to-be-transmitted data and that is sent by a transmit end, where the notification information includes a size of the to-be-transmitted data of the transmit end; generating a plurality of RDMA read requests based on the size of the to-be-transmitted data; and sending the plurality of RDMA read requests to the transmit end, where a bandwidth occupied by data read by the plurality of sent RDMA read requests is less than or equal to an ingress bandwidth of the receive end.

Abstract: A switching device is provided obtains information about devices connected to a plurality of ports of the switching device and determines response ports of the switching device based on the information about the devices connected to the plurality of ports. Different response ports of the switching device are connected to different devices, and each response port is configured to receive a management packet or a response to the management packet that is sent by a device connected to each response port in a device enumeration process.

Abstract: A data transmission method, performed by a receive end, includes: receiving notification information that is about to-be-transmitted data and that is sent by a transmit end, where the notification information includes a size of the to-be-transmitted data of the transmit end; generating a plurality of RDMA read requests based on the size of the to-be-transmitted data; and sending the plurality of RDMA read requests to the transmit end, where a bandwidth occupied by data read by the plurality of sent RDMA read requests is less than or equal to an ingress bandwidth of the receive end.

Abstract: A data transmission method, including obtaining by a transmit end, at least two to-be-transmitted packets, determining a first interface used to transmit each of the packets in at least two interfaces of the transmit end, and determining an identifier of each of the packets that is related to the first interface, where the identifier represents an order of the first interface used to transmit each of the packets in the at least two interfaces used to send the at least two packets adding the identifier to a packet header of each of the packets and sending a packet added with the identifier to the receive end device through the first interface, so that the receive end device adjusts, based on the identifier, an order of the packet added with the identifier.

Abstract: A data transmission method, including obtaining by a transmit end, at least two to-be-transmitted packets, determining a first interface used to transmit each of the packets in at least two interfaces of the transmit end, and determining an identifier of each of the packets that is related to the first interface, where the identifier represents an order of the first interface used to transmit each of the packets in the at least two interfaces used to send the at least two packets adding the identifier to a packet header of each of the packets and sending a packet added with the identifier to the receive end device through the first interface, so that the receive end device adjusts, based on the identifier, an order of the packet added with the identifier.