Based on a unified multi-link layer protocol exchange method Ethernet bus

The present invention provides a multi-link layer protocol based on a unified Ethernet bus switching method, comprising: defining a virtual channel corresponding to the channel such that the virtual route forwarding interface module, the interface forwards the correspondence of each virtual channel and routing module, the routing module is configured for routing data, i.e. the selection data forwarding on that virtual channel; virtual channel receives the data transmitted through an interface board located in the interface processing module, and transmitted to the protocol processing module corresponding to the interface, different the protocol processing module corresponding to the different interfaces; unified multi-link layer protocol by the virtual channel switching configuration, including data transmission and data reception. Uniform link layer multiprotocol switching method of the present invention, the network switching device based on the way through the expansion interface board interface, using the definition of the virtual channel to complete the exchange of data in the Ethernet link layer, to improve the efficiency of data transfer, the network switching is also beneficial extended equipment upgrade.