Message forwarding method and corresponding equipment
A forwarding device and message forwarding technology, applied in the network field, can solve the problems of network architecture development and application limitations, and the lack of NAT function, and achieve the effect of being conducive to development and wide application.
Active Publication Date: 2013-01-30
HUAWEI TECH CO LTD
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Problems solved by technology
[0007] During the research process, the inventor found that the NAT function was not implemented in the network architecture with separation of control and forwarding, which limited the development and application of the network architecture with separation of control and forwarding
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[0063] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0064] see figure 2 The embodiment of the present invention provides a method for message forwarding, the method is applicable to a network where control and forwarding are separated, and the network includes a forwarding device and a control device, and the method includes the following contents.
[0065] 201. The forwarding device receives a first IP packet sent fro...
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The embodiment of the invention provides a message forwarding method, which comprises the following steps that: forwarding equipment receives a first Internet protocol (IP) message sent by first user equipment; if a first flow table matched with the first IP message is inquired, and the first IP message is required to be forwarded to control equipment according to the first flow table, the forwarding equipment forwards the first IP message to the control equipment, so that the control equipment executes network address transformation (NAT) processing on the first IP message to generate a second IP message; and the forwarding equipment receives the second IP message sent by the control equipment and forwards the second IP message. The embodiment of the invention also provides the forwarding equipment and the control equipment. By the technical scheme provided by the embodiment of the invention, an NAT processing function can be realized in a network in which control and forwarding are separated.
Description
technical field [0001] The invention relates to the network field, in particular to a method and corresponding equipment for message forwarding. Background technique [0002] With the development of the network, the number of computers connected to the Internet is increasing rapidly, and the Internet Protocol version 4 (IPv4) address resources are becoming less and less. Obviously, such a small number of IPv4 addresses cannot meet the needs of network users at all, so Network Address Translation (NAT) technology has also emerged. [0003] With the help of NAT, when the "internal" network of the private address sends data packets through the router, the private address is converted into the IPv4 address of the public network, and a local area network only needs to use a small number of IPv4 addresses to realize the communication between all computers in the private address network and the Internet need. [0004] NAT will automatically modify the source IP address and destin...
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IPC IPC(8): H04L12/741H04L29/12H04L45/74
CPCH04L12/56H04L45/00H04L61/25
Inventor 李凤凯刘恩慧林程勇丁万夫
Owner HUAWEI TECH CO LTD