Method for actively measuring end-to-end path performance of OpenFlow network and system adopted by the same

A technology of active measurement and path measurement, applied in the field of network communication, can solve problems such as end-to-end path performance measurement, and achieve the effect of low overhead

Active Publication Date: 2015-06-24
PLA UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the problem that the end-to-end path performance cannot be effectively measured in the OpenFlow network at present, the pres

Method used

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  • Method for actively measuring end-to-end path performance of OpenFlow network and system adopted by the same
  • Method for actively measuring end-to-end path performance of OpenFlow network and system adopted by the same
  • Method for actively measuring end-to-end path performance of OpenFlow network and system adopted by the same

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Embodiment

[0030] This example gives the figure 1 The working process of the active measurement of the end-to-end path in the network environment shown is as follows: firstly, the Spirent Avalanche traffic generator is used to generate a TCP background flow between S1 and S6, and the controller establishes a flow table for the background flow, and its route is S1-S2-S3-S5-S6 (ie figure 1 path in 1). The NTP protocol is used for clock synchronization between the switch and the controller. Then, the controller calls the measurement application program to measure the end-to-end performance of the path, and uses PACKET-OUT to initiate the measurement. The starting point of the measurement is S1, and the end point is S6. When the two-way measurement mode is used, the measurement message arrives at S6 and returns to S1 according to the original path, and S1 uses PACKET-IN to return the measurement message with the time stamp of the controller and each switch to the controller, and the contro...

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Abstract

The invention provides a method for actively measuring an end-to-end path performance of an OpenFlow network and a system adopted by the same. Aiming at the problem that the end-to-end path performance of the OpenFlow network is currently unable to be measured, the efficient measuring method and the system which use an OpenFlow active measurement protocol OFMP and regard a controller as a center are provided. The measuring method and the system can provide technological means and practical tools for debugging of an SDN control program, quantitative analyzing of an SDN architecture and a mechanism and assessing of network behaviors. Under the condition of clock synchronization of equipment, the system sends one packet so that the end-to-end performance parameters such as routing, a one-way delay, a round trip delay, a piecewise one-way delay, and a delay and a packet loss probability between a control plane and a data plane can be efficiently measured. In addition, under the condition that the clock is desynchronized or not-OFMP enabled equipment is provided, the measuring system can still measure part of major performance indexes, and the advantage that the spending for a processing OFMP is little is provided.

Description

technical field [0001] The invention belongs to the field of network communication, and specifically proposes a method and system for actively measuring the end-to-end path performance of an OpenFlow network. Background technique [0002] At present, the network architecture of Software Defined Networking (SDN) provides a new technical approach to strengthen network functions, shorten network innovation cycles and solve Internet problems. Although OpenFlow-based SDN has been applied in data centers, network management, network security and other fields, and has verified the feasibility and usability of the SDN architecture, the SDN architecture is more complex and lacks the ability to debug SDN control programs and quantitatively analyze SDN. The architecture and mechanism and technical means of evaluating network behavior seriously hinder the scientific development of SDN. [0003] Network measurement is a basic means to understand network behavior and an important method ...

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Application Information

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IPC IPC(8): H04L12/26H04L7/00H04L12/937
Inventor 陈鸣代飞许博邢长友
Owner PLA UNIV OF SCI & TECH
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