Method and network device for data processing

1. A network device located in a first network for forwarding a first packet in the first network to a second network, a header of the first packet comprising first network information, the device comprising:

at least one processor;

a non-transitory storage medium coupled to the at least one processor and configured to store one or more programs that are executed by the at least one processor, the one or more programs including instructions for:

packaging, to obtain a second packet, second network information into the first packet;

determining whether there is transport layer protocol information in the second packet;

copying and inserting the transport layer protocol information into the header of the second packet to obtain a third packet when the transport layer protocol information is in the second packet, wherein the inserted transport layer protocol information is located between the second network information and the first network information and is used as a fast-forwarding identification; and

forwarding the third packet to the second network which fast-forwards the third packet upon the condition that there is the inserted transport layer protocol information in the header of the third packet.

2. The network device of claim 1 , wherein the transport layer protocol information comprises user datagram protocol (UDP) information or transmission control protocol (TCP) information, the one or more programs further including instructions for:

copying and inserting the UDP information into the header of the second packet; and

generating the UDP information, and inserting the generated UDP information into the header of the second packet when the TCP information is in the second packet.

3. The network device of claim 2 , wherein the UDP information is configured between the first network information and the second network information when the UDP information is in the second packet.

4. The network device of claim 2 , wherein the UDP information is configured between the first network information and the second network information when the TCP information is in the second packet.

5. A method for data processing operable to be executed in a network device, the network device is located in a first network for forwarding a first packet in the first network to a second network, a header of the first packet comprising first network information, the method comprising:

packaging, to obtain a second packet, second network information into the first packet;

determining whether there is transport layer protocol information in the second packet;

copying and inserting the transport layer protocol information into the header of the second packet to obtain a third packet when the transport layer protocol information is in the second packet, wherein the inserted transport layer protocol information is located between the second network information and the first network information and is used as a fast-forwarding identification; and

forwarding the third packet to the second network which fast-forwards the third packet upon the condition that there is the inserted transport layer protocol information in the header of the third packet.

6. The method of claim 5 , wherein the transport layer protocol information comprises user datagram protocol (UDP) information or transmission control protocol (TCP) information, and the method further comprises:

copying the UDP information into the header of the second packet; and

generating the UDP information, and inserting the generated UDP information into the header of the second packet when the TCP information is in the second packet.

7. The method of claim 6 , wherein the UDP information is configured between the first network information and the second network information when the UDP information is in the second packet.

8. The method of claim 6 , wherein the UDP information is configured between the first network information and the second network information when the TCP information is in the second packet.

9. A non-transitory storage medium configured to store one or more programs:

when a first packet is forwarded from a first network to a second network, a header of the first packet comprising first network information, the one or more programs cause a network device to:

package, to obtain a second packet, second network information into the first packet;

determine whether there is transport layer protocol information in the second packet;

copy and insert the transport layer protocol information into the header of the second packet to obtain a third packet when the transport layer protocol information is in the second packet, wherein the inserted transport layer protocol information is located between the second network information and the first network information and is used as a fast-forwarding identification; and

forward the third packet to the second network which fast-forwards the third packet upon the condition that there is the inserted transport layer protocol information in the header of the third packet.

10. The non-transitory storage medium of claim 9 , wherein the transport layer protocol information comprises user datagram protocol (UDP) information or transmission control protocol (TCP) information, the one or more programs further cause the network device to:

copy the UDP information into the header of the second packet, when the UDP information is in the second packet; and

generate the UDP information, and insert the UDP information into the header of the second packet when the TCP information is in the second packet.

11. The non-transitory storage medium of claim 10 , wherein the UDP information is configured between the first network information and the second network information when the UDP information is in the second packet.

12. The non-transitory storage medium of claim 10 , wherein the UDP information is configured between the first network information and the second network information when the TCP information is in the second packet.