A METHOD OF VIRTUAL LOCAL AREA NETWORK EXCHANGE AND THE NETWORK DEVICE THEREOF

摘要

A method of virtual local area network exchange includes the steps of: receiving the data frame, obtaining the information related to the exchange according to the data frame, querying the corresponding relations between the information related to the exchange and the VLAN information configured in the network device, thereby to obtain the new VLAN information, and updating the data frame according to the new VLAN information; forwarding the updated data frame. Wherein, the information related to the exchange comprises VPNID, VPNID and egress physical ports, public network VLAN information, the identification information of the data frame the identification of the exchange field, the identification of the exchange field and the destination MAC address. The invention also discloses the corresponding network devices.