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Method, apparatus and system for re-establishing a secure communication channel

A secure communication and re-establishment technology, applied in the transmission system, data exchange through path configuration, electrical components, etc., can solve problems such as heavy workload, achieve the effect of improving real-time performance, improving business perception, and reducing maintenance workload

Active Publication Date: 2018-09-21
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Obviously, when the network scale is relatively large, the workload will become very large

Method used

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  • Method, apparatus and system for re-establishing a secure communication channel
  • Method, apparatus and system for re-establishing a secure communication channel
  • Method, apparatus and system for re-establishing a secure communication channel

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Embodiment Construction

[0052] 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. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. 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.

[0053] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0054] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses a method, a device and a system for re-establishing a secure communication channel. The method comprises the steps of: sending a channel connection information change notification to an OpenFlow switch (which has established a connection) based on a current connecting channel when an SDN controller receives a request for modifying channel connection information sent by an application module, wherein the channel connection information change notification includes channel connection information which has changed, so that the OpenFlow switch can update locally configured channel connection information; updating self-configured channel connection information if judging that the OpenFlow switch has successfully updated the locally configured channel connection information when a channel connection information change response sent by the OpenFlow switch is received; and establishing a new secure channel with the OpenFlow switch by utilizing the channel connection information updated based on local configuration when a new channel establishment request sent by the OpenFlow switch is received. Therefore, the real-time performance of communication between the SDN controller and the OpenFlow switch can be improved, the maintenance workload is greatly reduced, and the service awareness of users is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for re-establishing a safe communication channel. Background technique [0002] OpenFlow (open flow, referred to as: OF) switch consists of one or more flow tables (Flow Table), a group table (Group Table) and the OpenFlow security channel (secure channel) leading to the SDN (Software Defined Networking, software defined network) controller channel) composition, such as figure 1 shown. The OpenFlow secure channel is an interface connecting the OpenFlow switch and the SDN controller, and is connected by TCP (Transmission Control Protocol, Transmission Control Protocol), usually encrypted by TLS (Transport Layer Security, Transport Layer Security Protocol). The SDN controller manages the OpenFlow switch through this interface, and receives events from the OpenFlow switch or sends packets to the OpenFlow switch. [0003] Usually, the SDN controller wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L29/06
Inventor 解云鹏史凡孙震强
Owner CHINA TELECOM CORP LTD