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

A software-defined network and network device technology, applied in the field of network communication, can solve the problems of heavy controller load and restricted network scale

Inactive Publication Date: 2014-11-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The technical scheme of the present invention provides a new message forwarding mode in the SDN network by changing the flow forwarding table items delivered by the controller in the SDN network and the way in which the flow forwarding table items are delivered, so as to realize the optimization of the SDN network. In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate. figure 2 It shows the implementation process of a method for forwarding packets in a software-defined network provided by an embodiment of the present inventio...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/741H04L45/74
Inventor 彼得·艾斯伍德·史密斯
Owner HUAWEI TECH CO LTD
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