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Self adaption sampling stream measuring method under high speed multilink logic channel environment

A technology of logical channel and measurement method, which is applied in the field of adaptive sampling flow measurement to achieve the effect of small error

Inactive Publication Date: 2007-10-10
SOUTHEAST UNIV
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Problems solved by technology

[0021] Technical problem: the purpose of this invention is to provide a kind of self-adaptive sampling flow measurement method under the high-speed multi-link logic channel environment, solve three problems existing in the traditional flow measurement system: 1, support multi-link logic from the system structure Channel network environment; 2. Adaptively and dynamically adjust the sampling rate according to the system load status to adapt to the change of traffic in the high-speed network environment and ensure the stable operation of the system; 3. Support output flow information in the form of time slices

Method used

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  • Self adaption sampling stream measuring method under high speed multilink logic channel environment
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  • Self adaption sampling stream measuring method under high speed multilink logic channel environment

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[0071] As shown in Figure 6, there are n parallel physical links between two routing or switching devices (such as ASON, CWDM) to form a transmission channel. Network traffic is introduced into n flow information monitoring units by deploying n optical splitters, and each flow information monitoring unit is connected to the back-end flow information integration unit through a 100M switch, and the link flow information is sent to the back-end in the form of UDP data packets , merged by the flow information integration unit, and then output in NetFlow report format.

[0072] 1) After the original message passes through the collector, its quantity is counted first, and the interval Δt is calculated using the current number of messages arriving per second PPS PPS The number of packets in divided by Δt PPS , get the PPS of the current link, denoted as PPS 当前 , and use this to change the next calculation interval Δt PPS ,

[0073] 2) Calculate the message sampling ratio, the pro...

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Abstract

The method is designed based on NetraMet and NetFlow system. It uses a sampling ratio supporting a high-speed multi-link logical channel network traffic measurement, which can makes self-adaption to the message sampling ratio and the traffic sampling ratio according to the network traffic state and supports to use time slice approach to output the stream message. It uses a general approach to monitor the traffic in any channels.

Description

technical field [0001] The invention relates to an adaptive sampling flow measurement method for computer network equipment, which belongs to the technical field of computer network monitoring and analysis. Background technique [0002] In the early days of network development, the processing power of a single computer was sufficient to meet the processing needs of low-speed network traffic monitoring, and the research and implementation of network measurement systems were basically based on the processing mode of a single computer. The RTFM[1] and IPFIX[2] working groups of IETF have formulated a large number of RFC standardization proposals from the perspective of the design of the measurement system architecture based on the stand-alone processing mode and the data exchange of the IP flow measurement system. These standardization proposals have largely influenced the structural design of existing measurement systems, among which NetraMet[3] and NetFlow[4] are the two most...

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Application Information

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IPC IPC(8): H04L12/26H04L12/56
Inventor 龚俭徐加羚陈亮
Owner SOUTHEAST UNIV
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