Uniform link layer multi-protocol exchange method based on Ethernet bus

The invention provides a uniform link layer multi-protocol exchange method based on an Ethernet bus. The method comprises the steps that virtual channels are defined, the virtual channels are made to correspond to forwarding interfaces of a routing module, the virtual channels correspond to the forwarding interfaces of the routing moduleone to one, and the routing module is configured for data routing, that is, the virtual channel is selected for data forwarding; the data transmitted through the virtual channels are received by an interface processing module on an interface plate, and are sent to corresponding interface protocol processing modules, and the different protocol processing modules correspond to different interfaces; uniform link layer multi-protocol exchange is achieved through the configured virtual channels, and comprises data sending and data receiving. According to the uniform link layer multi-protocol exchange method, interface expansion is carried out based on network exchange equipment through the interface plate, data exchange on an Ethernet link layer is completed by defining the virtual channels, the data forwarding efficiency is improved, and expansion and upgrading of the network exchange equipment are facilitated.