Path state reporting method based on centralized control plane

A technology of centralized control and path status, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as limited number of bits, limited SDN applications, and reduced network freedom.

Active Publication Date: 2020-05-22
CHUNGHWA TELECOM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, SDN traceroute assumes that a certain field in the packet header can be reserved for the return detection packet, and it is impractical to prohibit all components and network management applications in the network from using this field
Although the developers of SDN traceroute may use their authority to require all application developers to comply with this specification, it will still reduce the degree of freedom of the controlled network and virtually limit the functions of other SDN applications.
In addition, the number of bits that can be used in the packet header is limited, which may cause multiple detection packets to correspond to the same label. If the detection packet is copied by other applications and sent to the network as a redundant backup, SDN traceroute may not be able to measure correctly measurement path

Method used

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  • Path state reporting method based on centralized control plane
  • Path state reporting method based on centralized control plane
  • Path state reporting method based on centralized control plane

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Embodiment Construction

[0028] The present invention provides a path state reporting method based on a centralized control plane, which generates a detection packet according to the data flow information to be detected, and then sends the detection packet to the origin switch. By making each network component controlled in the network actively report the result when receiving the detection packet, it can confirm the actual path of the specified data flow in the network, which can be used as the judgment basis for network environment debugging.

[0029] The detection process of the present invention is mainly divided into three stages, which are respectively the creation stage 31, the detection stage 32 and the return stage 33, and its flow chart is as follows image 3 shown.

[0030] In the creation stage 31, first generate a detection packet that simulates the data flow packet to be detected, as the actual path that the data flow will flow in the network for detection, it includes the step of giving...

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Abstract

The present invention proposes a path status report method based on a centralized control plane, which can track the actual path status through which data streams flow, and assist network managers and their network management application programs to analyze and troubleshoot more efficiently. The design of the present invention focuses on compatibility with other network management applications and network components. By filling in the identification information of the detection packet in the payload, correct detection can be obtained without restricting the use and modification of the packet header. result.

Description

technical field [0001] The present invention relates to a path state reporting method, especially a cost-effective method, which focuses on compatibility with other network management applications and network components, and can be combined with other applications without affecting other applications to form a more complete Detection tool, or used for network self-optimization, and adopts a centralized control plane path status reporting mechanism, which can track the actual path of data flow and provide more efficient analysis for network managers and network management applications With the ability to eliminate obstacles, it effectively reduces CAPEX (Capital Expenditure_capital expenditure) and OPEX (Operating Expenditure_operational expenditure) based on the path status return method of the centralized control plane. Background technique [0002] In traditional networks, switches and routers not only need to forward packets, but also need to understand the network topolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/703H04L12/721H04L45/28H04L45/42
CPCH04L41/0654H04L43/0817H04L45/28H04L45/70
Inventor 朱煜煌徐浩然蓝元良刘景豊
Owner CHUNGHWA TELECOM CO LTD
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