Patent ID: 8509243

Claim:
A method for sending a packet based on tunneling protocol used in Layer 2, the method comprising: enabling an a Dynamic Host Configuration Protocol (DHCP) snooping protocol at a QinQ termination interface to generate a DHCP snooping binding table when a client applies to a DHCP server for an Internet Protocol (IP) address; searching the DHCP snooping binding table according to IP address of the client in a packet of a traffic flow to obtain forwarding address information corresponding to the client when the traffic flow needs to be sent from a network side to the client via a QinQ termination equipment in which tunneling protocol used in Layer 2 is used; encapsulating the packet of the traffic flow using the forwarding address information corresponding to the client; and sending the packet of the traffic flow to the client according to the obtained forwarding address information; wherein the forwarding address information corresponding to the client comprises two layers of Virtual Local Area Network (VLAN) tag information of the client.