System for quickly updating forwarding channel of Openflow switch and method thereof

A technology of forwarding channels and switches, which is applied in transmission systems, digital transmission systems, data switching networks, etc., can solve problems affecting the execution accuracy of Openflow switches and the inability to perceive changes in the upper-layer data forwarding table of message forwarding in a timely manner, so as to improve Data forwarding efficiency, reducing upper-layer resource overhead, and ensuring real-time effects

Active Publication Date: 2019-10-22
SHANGHAI COMMITTEE CHINA TELECOM GRP LABOR UNION
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Problems solved by technology

[0005] Before the hardware data forwarding table ages, packet forwarding cannot detect changes in the upper layer data forwarding table in time
In complex application scenarios, when it is necessary to implement operations such as forced termination of existing data streams, if the forced termination operation exceeds the forwarding design of the original chip hardware, it will not be able to effectively stop due to hardware acceleration, which does not meet the transmission requirements. The regular data flow continues to be forwarded, which affects the execution accuracy of the Openflow switch

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  • System for quickly updating forwarding channel of Openflow switch and method thereof
  • System for quickly updating forwarding channel of Openflow switch and method thereof
  • System for quickly updating forwarding channel of Openflow switch and method thereof

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0041] In a preferred embodiment of the present invention, an Openflow switch forwarding channel fast update sys...

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Abstract

The invention discloses a system for quickly updating a forwarding channel of an Openflow switch and a method thereof, and belongs to the technical field of SDN. The method specifically comprises: a detection message sending unit taking out a message in a hardware acceleration channel at regular time and sending the message to a data forwarding unit, matching the message with a data forwarding table in the data forwarding unit, updating the data forwarding table and a hardware data forwarding table in time, and guaranteeing the real-time mapping relation between the data forwarding table and the hardware data forwarding table. The scheme has the beneficial effects that the sensitivity of the hardware data forwarding table to the data forwarding table is enhanced, the message forwarding problem caused by the change of the data forwarding table or the aging of the hardware data forwarding table due to service change is solved, the real-time performance of service effectiveness is realized, the data forwarding efficiency is improved, and the overhead of upper-layer resources is reduced.

Description

technical field [0001] The present invention relates to the technical field of SDN, in particular to a fast update system and method for an Openflow switch forwarding channel. Background technique [0002] SDN (Software Defined Network) is a new architecture for realizing network virtualization. Its core technology, Openflow, separates the control plane and data plane of network equipment, realizes flexible control of network traffic, and makes the network Pipelines just got smarter. [0003] When the Openflow switch performs data forwarding, the OpenFlow matching unit receives the flow table of the SDN controller and performs matching learning. The data forwarding unit is connected to the OpenFlow matching unit, and generates a data forwarding table after matching and learning. In order to speed up data forwarding efficiency and reduce upper layer resource overhead. The hardware forwarding unit is connected with the data forwarding unit, generates a hardware data forwardi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/825H04L12/931
CPCH04L47/10H04L49/70H04L47/26Y02D30/50
Inventor 夏俊钟赟姜雨涵陆瀛峰顾祎赟杨炳丰
Owner SHANGHAI COMMITTEE CHINA TELECOM GRP LABOR UNION
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