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Measuring method, measuring apparatus for route congestion state in IP network

A technology of congestion state and measurement method, which is applied in the field of data communication, can solve problems such as large delay delay, inability to accurately reflect network congestion state, and cost messages, and achieve the effect of accurate load level

Active Publication Date: 2011-05-11
CHINA TELECOM CORP LTD
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Problems solved by technology

Such latency-based measurements do not accurately reflect the congestion state of the network
For example, when measuring the delay of two links with different rates, because the low-speed link takes more packet transmission time than the high-speed link, even if the load of the low-speed link is light, and the load of the high-speed link is heavy case, the delay of the low-speed link may still be much greater than the delay of the high-speed link

Method used

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  • Measuring method, measuring apparatus for route congestion state in IP network
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  • Measuring method, measuring apparatus for route congestion state in IP network

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Embodiment Construction

[0029] The present invention will be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the present invention are illustrated.

[0030] Message delay includes two measurement methods, one-way delay and round-trip delay. The one-way delay measurement method usually refers to sending test packets at both ends of the path under test (also called measurement points), and obtaining the delay by the difference between the time the destination end receives the test packet and the test packet sent by the source end measure. The round-trip delay measurement method means that the test message is sent at the source end of the path under test, and the target end immediately sends back the test message after receiving the test message. The difference between the time when the source end receives the returned test message and the time when the test message is sent To get the delay metric. One-way delay measurement usually needs to keep t...

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Abstract

The invention discloses a measurement method for path congestion status in an IP network, a measuring device and a data retransmitting device thereof. The measurement method comprises the steps: measuring the measurement of message queuing delay of the path in the network; measuring the measurement of message loss rate of the path in the network; acquiring a comprehensive measurement of the congestion status of the path according to the measurement of message queuing delay and the measurement of message loss rate. The measurement method of the invention acquires the comprehensive measurement through measuring the measurement of message queuing delay and the measurement of message loss rate, thus can reflect path load level in real network more exactly.

Description

Technical field [0001] The present invention relates to the field of data communication technology, and in particular to a method and device for measuring path congestion in an IP network. Background technique [0002] Internet (Internet) traffic engineering is a network engineering about the performance evaluation and performance optimization of IP networks. It mainly includes three aspects: routing control, load balancing and network measurement. Among them, routing control is the study of network topology, quality of service (QoS) and various routing algorithms for constrained routing, as well as various routing strategies. Load balancing includes multiple parallel label switching paths (LSP) in a multi-protocol label switching (MPLS) network and various dynamic or static traffic mapping methods, as well as load balancing based on equal cost multipath (ECMP) in traditional routing networks . The focus of load balancing is to achieve optimal distribution of traffic based on ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/56
Inventor 何晓明卢燕青朱永庆朱明英
Owner CHINA TELECOM CORP LTD
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