A method, device and system for forwarding data packets
A technology for forwarding equipment and data packets, which is applied in the field of communication, and can solve problems such as interruption of data streams and failure of forwarding equipment to forward data packets normally
Active Publication Date: 2022-01-14
HUAWEI TECH CO LTD
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[0004] The method, device, and system for forwarding data packets provided by the embodiments of the present invention solve the problem that in a virtual network under a control-forwarding separation architecture that works in Pull mode, when the controller fails, the forwarding device cannot normally forward data packets. Problems that cause interruption of data flow help to improve system reliability
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[0067] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.
[0068] The network architecture and business scenarios described in the embodiments of the present invention are to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute limitations on the technical solutions provided by the embodiments of the present invention. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present invention are also ap...
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The present application provides a method, device and system for forwarding data packets, which are applied in a virtual network separated from control and forwarding. The method includes: the forwarding device receives the first default flow entry of the virtual network from the controller , the first default flow entry of the virtual network instructs the forwarding device to search the first flow table according to the matching item of the data packet in the virtual network and if no flow entry is found, the The data packet is sent to the specified forwarding device. The forwarding device receives the first data packet in the virtual network from the end system. When the controller fails and the forwarding device searches the first flow table according to the matching item of the first data packet and fails to find a flow entry, the forwarding device uses the first default flow table of the virtual network The item sends the first data packet to the specified forwarding device. It is helpful for uninterrupted forwarding of data packets and improving system reliability.
Description
technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to a method, device and system for forwarding data packets. Background technique [0002] The software-defined network (English: Software Defined Networking, SDN) architecture based on the idea of separation of control and forwarding is a new network switching model, and its key components include controllers and forwarding devices (for example, OpenFlow (English: OpenFlow) switches). The controller and the forwarding device communicate through the control channel protocol to complete message interaction and information transmission. Currently, commonly used control channel protocols, for example, may include: OpenFlow protocol, Path Computation Element communication protocol (Path Computation Element Communication Protocol, PCEP), Border Gateway Protocol (Border Gateway Protocol, BGP), routing system interface (Interface to the Routing System, I2RS), etc. ...
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IPC IPC(8): H04L41/06H04L41/0695H04L41/14H04L49/25H04L45/745H04L12/46H04L45/02H04L45/74H04L45/28
CPCH04L12/4633H04L12/4641H04L41/06H04L41/0695H04L41/145H04L45/54H04L49/252H04L45/7452H04L12/46H04L45/64H04L45/28H04L41/0668H04L45/38H04L45/745
Inventor 郝卫国徐新军吴昊张飞
Owner HUAWEI TECH CO LTD