Data stream forwarding method facing Fat-Tree data center network architecture

A technology of data center network and data flow, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc. It can solve the problems of large data flow congestion, improve utilization rate, reduce the probability of congestion, and reduce the probability of collision Effect

Active Publication Date: 2015-07-08
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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  • Data stream forwarding method facing Fat-Tree data center network architecture
  • Data stream forwarding method facing Fat-Tree data center network architecture
  • Data stream forwarding method facing Fat-Tree data center network architecture

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[0021] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0022] Such as image 3 As shown, in a data center network with a 4-stage Fat-Tree topology, each switch is an SDN switch supporting the OpenFlow protocol, and the bandwidth of each link in the network is 100 Mbps. Such as figure 1 As shown, run two scheduled tasks, respectively with T 1 and T 2 Periodically collect all link statistics of the network and statistics of all forwarding data flows. When the host H1 sends a data flow f1 to the host H2, according to figure 2 As shown in the process in , if there is no corresponding forwarding flow entry in the edge switch connected to H1, then start to calculate the forwarding path based on load balancing for f1.

[0023] Analyze the addresses of H1 and H2, and determine that the highest layer that f1 needs to reach is the core switch layer. F1 starts forwa...

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Abstract

The invention discloses a data stream forwarding method facing Fat-Tree data center network architecture, and belongs to the technical field of data center networks. The data stream forwarding method facing the Fat-Tree data center network architecture is characterized in that forwarding of a stream in a network can be dynamically controlled and the route forwarding strategy of the stream can be dynamically adjusted according to the size of the stream in the network by combining a data center network and the SDN technology in the data center network regarding Fat-Tree as network topology. The method has the functions of a timing network link information acquisition module, a data stream information acquisition module, a large data stream detecting and processing module, a load balancing control forwarding module and a large data stream forwarding module. According to the data stream forwarding method facing the Fat-Tree data center network architecture, load balancing of a data stream in the data center network can be achieved, the forwarding strategy can be dynamically adjusted according to the different data stream sizes, the link utilization ratio of the data center network can be improved, the forwarding delay of the data stream can be shortened, and the probability of link jamming is reduced.

Description

technical field [0001] The invention belongs to the field of data center networks, and relates to a data flow forwarding method oriented to a Fat-Tree data center network architecture, in particular to a routing and forwarding strategy for data flows applied in a data center network with a Fat-Tree network topology. Background technique [0002] With the development of Internet technology, especially the widespread application of cloud computing technology, more and more network applications and services are deployed in data centers. The ever-increasing number of users and the improvement of users' requirements for service quality pose challenges to traditional data center network services. The emergence of multi-equivalent path network topology represented by Fat-Tree provides new development opportunities for data center network services. The multi-path network topology can overcome the service bottleneck caused by the increase in the number of users by utilizing addition...

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Application Information

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IPC IPC(8): H04L12/813H04L12/803H04L47/20
Inventor 李克秋王珣齐恒
Owner DALIAN UNIV OF TECH
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