A two-layer detection method for multi-domain SDN control node failure

A technology for controlling nodes and detection methods, applied in advanced technology, digital transmission systems, climate sustainability, etc., can solve the problems of repeated command execution by switches, inability of switches to roll back, and no consideration of switch status information, achieving rapid detection and The effect of locating faults, improving detection effectiveness, and reducing time

Active Publication Date: 2020-03-31
XI AN JIAOTONG UNIV
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Problems solved by technology

However, the current consistency research content is only about the state information of the controller, without considering the state information of the switch, which will cause problems such as repeated execution of commands by the switch, and because there is no record of the state of the switch, the switch cannot roll back to a safe starting point

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  • A two-layer detection method for multi-domain SDN control node failure
  • A two-layer detection method for multi-domain SDN control node failure
  • A two-layer detection method for multi-domain SDN control node failure

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Embodiment Construction

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] The invention provides a double-layer detection method for multi-domain SDN control node failure. In the multi-domain SDN scenario, the control plane is composed of N (N>1) distributed control nodes. After the initialization of the multi-domain SDN is completed, the distributed control nodes not only need to synchronize the global network topology information in time to ensure the accuracy and consistency of their stored network topology information, but also need to periodically detect the status of other control nodes. status to ensure global network performance and prevent partial network paralysis due to failure of control nodes.

[0027] During the initial establishment of the control plane, according to the multi-domain SDN network architecture, each control node will serve as the main control node of som...

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Abstract

The invention discloses a double-layer detection method of multidomain SDN control node failure. The method comprises the following specific procedures: heartbeat detection is executed for a control plane, wherein a result of detection is that a heartbeat request and a heartbeat response of the same control node C both are failed; then, detection of a data plane is executed; the control plane monitors a state of the data plane, when the control node D receives a LLDP sent by the data plane, the control node C is a master control node of a subdomain P, the control node D is a slave control nodeof the subdomain P and the LLDP is sent by the subdomain P; and then, the control node C is failed, and failure recovery is started at the same time. The method provided by the invention optimizes and reduces failure detection time and realizes fast detection and locating for the failure, reduces interval time of the failures in a network and improves reliability of a global network.

Description

technical field [0001] The invention belongs to the technical field of software-defined networks and relates to a double-layer detection method for multi-domain SDN control node failures. Background technique [0002] At present, the network has penetrated into every corner of society and has become one of the essential infrastructures in people's lives. With the rapid development of network applications, traditional network switching equipment carries more and more control logic, which is difficult to meet the needs of network virtualization, cloud computing and related business development for high-speed data transmission, flexible resource configuration, and rapid protocol deployment. . Compared with the rapid development of the Internet's upper-layer applications and underlying communication technologies, the basic architecture of the Internet's network layer and transport layer has not changed much. This completely TCP / IP-based transport layer and network layer , and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/0631H04L41/0677H04L43/106Y02D30/00
Inventor 赵季红曲桦杨静赵建龙喻理文
Owner XI AN JIAOTONG UNIV
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