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An SDN-based data center network traffic measurement method

A technology for data center network and flow measurement, which is applied in data exchange network, digital transmission system, electrical components, etc. It can solve problems such as undecodeable, unreachable flow, and high load of solving problems, so as to improve accuracy and high scalability performance, high-precision flow counter decoding effect

Active Publication Date: 2020-07-17
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, FlowRadar may not be able to decode when the counter resources are insufficient, resulting in no flow information at all.
In addition, when FlowRadar is decoding across the entire network, its problem-solving load is very high, and it is difficult to guarantee the timeliness of results

Method used

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  • An SDN-based data center network traffic measurement method
  • An SDN-based data center network traffic measurement method
  • An SDN-based data center network traffic measurement method

Examples

Experimental program
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Embodiment

[0043] For the convenience of description, the relevant technical terms appearing in the specific implementation are explained first:

[0044] SDN (Software Defined Networking): software defined network;

[0045] figure 1 It is a flow chart of the SDN-based data center network traffic measurement method of the present invention.

[0046] In this example, if figure 2 As shown, the topology is tested in a fat tree network with 20 switches, and the number of hash functions k in the Flow Filter is set f is 5, the number of entries in the Counting Table is 10K, divided into 10 groups, each group contains 1k entries, and the number of second-level hash functions in the Counting Table is k c for 4. Set the link bandwidth in the network to 10Gps, the decoding cycle to 100ms, and use the 28th principle and bandwidth as the standard to randomly generate streams in the network. according to figure 2 The architecture shown is measured, and the specific process of the measurement i...

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Abstract

The invention discloses a data center network flow measurement method based on SDN. First, a set of encoding flows is set for each switch, and then the switches of each data plane are encoded in one cycle to obtain the Flow Filter, Counting Table and Flow Vector, and then send the Flow Filter, Counting Table, and Flow Vector of all switches encoded in a cycle to the control plane decoding host for decoding, so as to measure the flow rate passing through each switch in the data center network in a cycle. The size of the traffic.

Description

technical field [0001] The invention belongs to the technical field of network measurement, and more specifically relates to an SDN-based data center network flow measurement method. Background technique [0002] NetFlow is a widely used traffic monitoring tool. When NetFlow is working, it maintains an active flow set (active flow set), and supports functions such as flow insertion, hash conflict resolution, and flow deletion. However, it is difficult to support all functions of NetFlow on commercial chips in the data center, because the full functions of NetFlow will reduce the processing speed of packets, and the simplified version of sampling cannot monitor the packets of all data flows. [0003] FlowRadar is a traffic monitoring method with low bandwidth and storage overhead and easy expansion. The core idea is that on the data plane, the switch utilizes less storage space and a fixed amount of simple operations to encode stream information, and the host on the control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/26
CPCH04L43/0876H04L63/0227H04L63/1408
Inventor 王雄刘瀚彧陈少博张俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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