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Measuring method, measuring apparatus and forwarding device 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: 2008-09-24
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

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

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Embodiment Construction

[0033] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0034] Packet delay includes two measurement methods: one-way delay and round-trip delay. The one-way delay measurement method usually refers to sending a test message at both ends of the path under test (also called a measurement point), and obtaining the delay through the time difference between the test message received by the destination end and the test message sent by the source end measure. The round-trip delay measurement method refers to sending a test message at the source end of the path under test, and the destination end sends back the test message immediately after receiving the test message, and the difference between the time when the source end receives the test message sent back and the time when the test message is sent to get latency metrics. One-way delay measurements usually r...

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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 invention relates to the technical field of data communication, in particular to a method for measuring path congestion state in an IP network, a measuring device and a forwarding device. 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 to study various routing algorithms of network topology, quality of service (QoS) and constrained routing, as well as various routing strategies. Load balancing includes multiple parallel label switching paths (LSP) in multi-protocol label switching (MPLS) networks, various methods based on dynamic or static traffic mapping, and load balancing based on equal-cost multi-path (ECMP) in traditional routing networks . The focus of load balancing is to realize the optimal allo...

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Application Information

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Patent Type & Authority Applications(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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