Message forwarding method in software defined networking, network equipment and software defined networking

Abstract

The invention provides a message forwarding method in software defined networking. The message forwarding method includes the steps of: receiving a message by network equipment; inquiring a flow table according to the message when path information does not exist in the message; and if a matched flow forwarding table item does not exist in the flow table, caching the message and sending the message to a controller, receiving a flow forwarding table item generated according to the message and issued by the controller, adding the path information in the flow forwarding table item to the message, and forwarding the message according to the path information. In the message forwarding method in software defined networking, the controller only needs to issue the flow forwarding table item including the path information to first network equipment of a message forwarding path, thus data volume issued by the controller is reduced, and expansibility of an SND is not influenced.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a message forwarding method in a software-defined network, network equipment and a software-defined network. Background technique [0002] Software defined networking (SDN for short) is a hot topic in the current network communication field. Because of its openness and flexibility, it has been vigorously sought after by major network equipment manufacturers, and various new technical solutions are emerging in an endless stream. In the current SDN technical solutions, the management of network devices, such as switches, is centrally controlled by a device called an SDN controller, which is typically OpenFlow (Open Flow Network). The OpenFlow network includes switches and controllers. The switch is responsible for packet forwarding, and the controller centrally controls the switch. The user can issue a flow table to the switch through the controller. The f...

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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a packet forwarding method in a software-defined network, a network device and a software-defined network, aiming at solving the problem that the existing controller needs to issue flow tables to all network devices on the forwarding path, control The server load is heavy, and the technical problem that restricts the network scale

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