Method and device for forwarding multicast data message from VXLAN (Virtual eXtensible Local Access Network) to VLAN (Virtual Local Access Network)

The invention provides a method and a device for forwarding a multicast data message from a VXLAN (Virtual eXtensible Local Access Network) to a VLAN (Virtual Local Access Network). A stencil of a gateway VXLAN switch does not use a mesh with a message forwarding function only but uses a chip, such as an exchange chip the same as an interface board, with a forwarding function and an entry function. Thus, the gateway VXLAN switch realizes a three-layer gateway function of the VXLAN to realize forwarding of the multicast data message from the VXLAN to the VLAN, the whole process is only executed inside the gateway VXLAN switch, not any bandwidth resources are wasted, and multicast data message wire-speed forwarding is realized.