Differential flow control method and device for cloud computing data center network

A data center network and transmission control technology, applied in the field of cloud computing, can solve the problems of high cost, difficult implementation, and difficulty in meeting the needs of mixed data stream transmission, and achieves the goal of reducing time, avoiding congestion, reducing packet loss and TCP timeout. Effect

Active Publication Date: 2017-03-22
CHONGQING UNIV
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Problems solved by technology

[0011] In view of this, the purpose of the present invention is to solve the problems of high cost, difficult implementation and difficulty in meeting the transmission requirements of mixed data streams in the existing data center network congest...

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  • Differential flow control method and device for cloud computing data center network
  • Differential flow control method and device for cloud computing data center network
  • Differential flow control method and device for cloud computing data center network

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Embodiment Construction

[0038] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] attached figure 2 A schematic flow diagram of a differential stream transmission control method for a cloud computing data center network, for reference figure 2 , a differential flow transmission control method for cloud computing data center network, the specific method is as follows:

[0040] In the first step, the switch uses the explicit congestion notification ECN mechanism to mark the data packets exceeding the set threshold queue length. The marking method is specifically as follows: the threshold parameter value of the mark is set at the switch to be K, and when a data packet arrives at the switch output queue, if the immediate queue length is greater than the threshold K, then the IP header of the data packet is used by the switch with CE ( CongestionExperienced) code point marking, otherwise no marking.

[0041] In th...

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Abstract

The present invention relates to a differential flow control method and device for a cloud computing data center network, which belongs to the field of cloud computing. The method comprises the following steps that 1) a switch uses an explicit congestion notification (ECN) mechanism to mark packets exceeding the set threshold queue length; 2) a sender server counts the proportion of marked ACK acknowledgment packets, updates a parameter [alpha], and determines whether congestion occurs, wherein the parameter [alpha] indicates the perception of the degree of congestion on the network; 2.1) when the network is not congested, the TCP flow does not carry out congestion window adjustment; 2.2 ) the sender server performs a flow classification decision, establishes a flow classification database, and records an update parameter [beta], wherein the parameter [beta] indicates the degree of reuse of a receiving end link of a large flow; and 3) the sender server executes different congestion back-off strategies for TCP flows of different transmission requirements distinguished by a flow classification decision mechanism. The advantages are that 1, TCP Incast congestion can be effectively avoided; 2, the time to complete the transmission of small flows can be shortened; and 3, the rapid and fair convergence of congestion control can be ensured.

Description

technical field [0001] The invention belongs to the field of cloud computing, and relates to a differential stream transmission control method and device for a cloud computing data center network. Background technique [0002] Cloud computing realizes the statistical multiplexing of resources in a virtualized way, and cloud users can access computing, network, storage, software and other resources in configurable resource pools on demand anytime and anywhere through the network. A data center (DataCenter) is mainly composed of a large number of servers, storage devices, network devices (switches, routers and cables), as well as power distribution systems and cooling systems. The data center network (DCN) as a communication infrastructure is a network that interconnects large-scale servers in the data center to realize large-scale distributed computing, and is used for the transmission and exchange of large amounts of data between servers in the data center. The current data...

Claims

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Application Information

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IPC IPC(8): H04L12/807H04L12/801H04L47/27
CPCH04L47/12H04L47/27
Inventor 蔡岳平张文鹏罗森樊欣唯
Owner CHONGQING UNIV
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