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Network failure recovery method, control server and switch

A technology of control server and recovery method, which is applied in the field of communication, and can solve problems such as unrecoverable switches and the control server

Active Publication Date: 2018-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, if the link between the switch and the control server is broken, the break between the switch and the control server cannot be restored.

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  • Network failure recovery method, control server and switch
  • Network failure recovery method, control server and switch
  • Network failure recovery method, control server and switch

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Embodiment Construction

[0062] 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 creative efforts fall within the protection scope of the present invention.

[0063] The network fault recovery method provided by the embodiment of the present invention can be specifically applied to the link between the control server and the switch in the Openflow network fails, or, when the link between the switches fails, the network fault recovery method can be specifically implemented through the network The network fault recovery device may b...

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Abstract

Embodiments of the present invention provide a network failure recovery method, a control server and a switch. In this method, the control server determines that the existing link with the first switch is interrupted, and then sends the first recovery flow table to the second switch, and the first recovery flow table includes the routing information between the control server and the first switch. Information and the information of the second port, the second port is the port through which the second switch communicates with the first switch, and then sends the first LLDP message to the second switch, the first LLDP message is used to determine the control server and the first switch A switch communicates with the first port, and then receives the first TCP handshake message sent by the first switch from the first port, and establishes an emergency link channel between the control server and the first switch according to the first TCP handshake message. In this way, the recovery of the link between the first switch and the controller is realized, and the reliability and robustness of the network where the switch is located are further improved.

Description

technical field [0001] The embodiment of the present invention relates to communication technology, and in particular to a network failure recovery method, a control server and a switch. Background technique [0002] OpenFlow technology transforms the forwarding process of data packets completely controlled by the switch or router into an independent process completed by the OpenFlow switch (OpenFlow Switch) and the control server (Controller). [0003] The existing Openflow technology mainly adopts a multi-control server redundancy strategy for the control plane, that is, a switch is directly connected to at least two control servers at the same time. However, during use, if a control server fails and a control channel is interrupted, the The control path between the switch and the control server is switched to another control server connected to the switch. [0004] However, in the prior art, if the link between the switch and the control server is broken, the break betwe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L29/08H04L12/703H04L45/28
CPCH04L41/0654Y02D30/00
Inventor 冯强那闻宇梁剑耀李泉材
Owner HUAWEI TECH CO LTD
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