Data transmission method and device

The embodiment of the invention discloses a data transmission method and device, and the method comprises the steps: receiving a to-be-transmitted data frame from a to-be-sent port, and obtaining theframe header information and first overhead information corresponding to the to-be-transmitted data frame; determining a first transmission mode corresponding to the to-be-transmitted data frame according to a preset transmission instruction; according to the first transmission mode, performing corresponding processing on the frame header information and the first overhead information to obtain to-be-transmitted data corresponding to the to-be-transmitted data frame; and sending the to-be-transmitted data to the to-be-received interface. 本发明实施例公开了一种数据传输方法及装置，该方法可以包括：从待发送端口接收待传输数据帧，并获取待传输数据帧对应的帧头信息和第一开销信息；根据预设传输指示，确定出待传输数据帧对应的第一传输模式；根据第一传输模式，对帧头信息和第一开销信息进行对应的处理，得到待传输数据帧对应的待传输数据；将待传输数据发送至待接收接口。