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Packet Scattering Based Heterogeneous Flow Isolation Method in DCN

A heterogeneous, short-flow technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problem that the data center cannot effectively solve the collision of heterogeneous flows, so as to reduce the average completion time and improve the user experience. , the effect of maximizing throughput

Active Publication Date: 2019-08-13
CENT SOUTH UNIV
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  • Description
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Problems solved by technology

[0006] The technical problem solved by the present invention is that the above-mentioned data center network congestion control cannot effectively solve the collision problem between heterogeneous flows. The present invention provides a method for isolating heterogeneous flows based on packet scattering in DCN, so that different types Streams are transmitted on mutually exclusive paths, avoiding resource competition and conflicts of heterogeneous streams

Method used

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  • Packet Scattering Based Heterogeneous Flow Isolation Method in DCN
  • Packet Scattering Based Heterogeneous Flow Isolation Method in DCN
  • Packet Scattering Based Heterogeneous Flow Isolation Method in DCN

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] see figure 1 , figure 1 It is a flowchart of the present invention. The process is as follows:

[0026] Step 1: Initialize the flow length f in the flow table as 0, and the flow category flag as NULL; set the threshold f 0 =200, the unit is packet; the total path number is maxslot=exit number N of the switch, the path number allocated to the long flow is m=0; the timer clock T is set as the propagation delay between the two hosts; the flow forwarding sign changepath=1 (changepath is used to mark the transmission state of the short flow, that is, whether the switch has received the short flow packet within T time to determine the forwarding path of the long flow packet, changepath=1 means that the switch has received the short flow packet within T time, then the switch will Ports, that is, one of the outgoing ports from No. 1 to maxslot is randomly selected t...

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Abstract

The invention discloses a packet scattering based heterogeneous stream isolation method in a DCN (Data Center Network). When an IP (Internet Protocol) subgroup is received, an exchanger can judge that whether the stream class of a stream to which the subgroup belongs is a long stream or a short stream according to a stream length threshold value, and then selects a corresponding forwarding path for a current subgroup according to the stream class and the transmission state of the short stream. Different paths are distributed for long-stream and short-stream subgroups to carry out transmission; the resource competition and conflict of a heterogeneous stream are avoided. By using the packet scattering based heterogeneous stream isolation method, the completion time of a delay-sensitive short stream in a data center can be shortened; meanwhile, the throughput rate of a throughput-sensitive long stream is maximized; therefore, the application performance is promoted; the user experience is optimized.

Description

technical field [0001] The invention relates to a heterogeneous flow isolation method based on packet scattering in a data center network (DCN, Data Center Network). Background technique [0002] In recent years, data centers have become an important part of the informatization construction of governments, enterprises and units, and are used to provide various distributed application computing and storage services. A data center usually consists of a large number of servers in a certain architectural form, which are used to process different online services, such as web search, cloud storage, etc. By establishing data centers, on the one hand, these organizations can dynamically allocate various computing resources, and on the other hand, they can obtain economies of scale by using large data centers. Therefore, more and more applications and services are being migrated to the data center. At the same time, users have higher and higher requirements for application performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/725
CPCH04L45/306
Inventor 黄家玮刘敬玲胡晋彬吕文俊王建新
Owner CENT SOUTH UNIV
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