Data center network flow balancing method and device oriented to software definition

A data center network, software-oriented technology, applied in the direction of data exchange network, electrical components, digital transmission systems, etc., can solve the problem of poor scalability, inability to solve data flow packet loss and packet disorder, and data center network traffic balance method deployment cumbersome and other issues to achieve the effect of simplifying deployment, solving out-of-order data packets, and enhancing scalability

Active Publication Date: 2016-08-31
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Since the current data center network traffic balancing method is cumbersome to deploy and has poor scalability, and cannot solve the problems of data flow packet loss and data packet disorder t...

Method used

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  • Data center network flow balancing method and device oriented to software definition
  • Data center network flow balancing method and device oriented to software definition
  • Data center network flow balancing method and device oriented to software definition

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Embodiment Construction

[0040] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0041] First, the Fat-tree network topology is adopted for the embodiment, and the switches in the topology need to be set by using the controller to issue a static flow table. In order to describe the workflow of the present invention more clearly, the concepts involved are defined as follows:

[0042] O-D (Origin-Destination) pair: Refers to two edge-layer switches directly connected to the source and destination hosts of a flow. The O-D pairs in the experiment belong to different POD (Performance Optimization Datacenter).

[0043] Intermediate switch: Refers to the aggregation layer and core layer switches.

[0044] Switch path: refers to the path composed of edge switche...

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Abstract

The invention discloses a data center network flow balancing method and a data center network flow balancing device oriented to software definition. The data center network flow balancing method comprises the steps that: a controller receives a data packet transmitted by a switch, matches feature fields of the data packet with fields in a flow table, and records actions of the data packet in an action set of the flow table according to a preset action priority; a corresponding operation is carried out on the data packet according to the action sequence in the action set if the feature fields of the data packet are successfully matched with the fields in the flow table; and whether a time slot field of the data packet is matched with a transmission time slot value in the flow table is judged if the corresponding operation is pretreatment forwarding, if so, then the data packet is forwarded, and if not, the data packet is cached to a next time slot for forwarding. The data center network flow balancing method and the data center network flow balancing device simplify deployment, enhance network expandability, and solve the problems of data flow packet loss during the strategy implementation process and disorder of data packets which may occur at a receiving end.

Description

technical field [0001] The invention relates to the technical field of data center network traffic, in particular to a software-defined data center network traffic balancing method and device. Background technique [0002] Traffic engineering of data center networks is an important direction of network research today. Since data center networks are owned by a single operator, it is convenient for unified deployment of traffic engineering, which naturally meets the centralized control requirements required by Software Defined Network (SDN) . At the same time, the data center network usually has a symmetrical topological structure, so that there are a large number of redundant links between node pairs. The use of multi-path transmission can improve the congestion problem caused by single-path routing due to the concentration of "routing" Fast link switching, enhanced reliability, and the ability to aggregate link bandwidth, making full use of these redundant links for traffic...

Claims

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Application Information

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IPC IPC(8): H04L12/803
CPCH04L47/125
Inventor 杨洋杨家海温皓森王会
Owner TSINGHUA UNIV
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