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Software defined data center network updating method for guaranteeing general consistency

A data center network, software-defined technology, applied in the field of computer networks, can solve problems such as inability to meet consistency, and achieve the effect of ensuring connectivity, consistency of performance and policies, and efficient updating

Active Publication Date: 2018-05-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the existing methods can satisfy all the above consistency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for updating a software-defined data center network that guarantees general consistency, comprising the following steps:

[0027] A. In a given network, divide the network graph into several mutually independent network graphs to reduce the complexity of the network graph, improve scheduling concurrency and scheduling speed, and ensure connectivity and consistency of performance and strategy;

[0028] B. Divide each independent network graph into a single-flow network graph and a multi-flow dependency graph;

[0029] C. For a single-flow network graph, the update sequence is completed from upstream to downstream. For a multi-flow dependency graph, first segment and adopt the same update strategy for different segments.

Embodiment 2

[0031] Based on the principles of complex network segmentation, segment classification processing, and segment update in the above embodiments, this embodiment describes in detail its implementation.

[0032] A. Divide a given complex network into several mutually independent parts.

[0033] specific:

[0034] A1. Find out all the key nodes in the network graph, the key nodes are nodes that control routing path switching, that is, nodes that use different input and output rules on the old and new paths.

[0035] A2. Segment the complex network graph according to key nodes, and the beginning and end of each segment are key nodes.

[0036] For the problem that the consistency cannot be guaranteed during the simultaneous update of the segments, an adjustment plan is proposed to ensure the consistency. Then propose a correction plan for the lack of consistency caused by the simultaneous update of segments to ensure the consistency of the update. The specific method is:

[0037]...

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PUM

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Abstract

The invention discloses a software defined data center network updating method for guaranteeing general consistency. The method comprises the following steps: A. in a given network, dividing a networkdiagram into several mutually independent network diagrams; B. dividing each independent network diagram into a single-flow network diagram and a multi-stream dependency diagram respectively; and C.separately calling the corresponding updating methods to update the single-flow network diagram and the multi-stream dependency diagram. By segmentation of complex network, segmented and classified processing and segmented updating, the problem that the existing scheme cannot ensure the general consistency in the software defined data center network updating is solved, and efficient updating of the software defined data center network is achieved on the premise of ensuring the connectivity, the performance and the consistency of the strategy.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method for updating a software-defined data center network that ensures general consistency. Background technique [0002] In recent years, technologies such as software-defined networking and network function virtualization have emerged to improve resource utilization and communication efficiency for next-generation computer networks. Software-defined networking separates the data plane from the logically centralized control plane using standardized, programmable interfaces, facilitating the operational simplification of maintaining large data center networks and reducing the overall cost of these networks. However, the decoupling of the control plane from the data plane brings new challenges for frequent network updates. In fact, network state changes originate from traffic changes in the software-defined data center network. Network consistency requires data flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/751H04L12/933H04L45/02
CPCH04L45/02H04L49/10H04L49/15H04L49/1507
Inventor 赵志为闵革勇曹辉王哲舒畅高伟峰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA