Method and device for selecting transmission path based on traffic engineering

A technology of traffic engineering and transmission selection, applied in the field of communication, can solve the problems of link congestion and improper selection of transmission paths, so as to reduce the probability of link congestion and avoid link congestion.

Active Publication Date: 2019-04-02
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the embodiments of the present application provide a method and device for selecting a transm

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  • Method and device for selecting transmission path based on traffic engineering
  • Method and device for selecting transmission path based on traffic engineering
  • Method and device for selecting transmission path based on traffic engineering

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0028] The terms "system" and "network" are often used interchangeably herein. The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual objects are a...

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Abstract

The invention discloses a method and device for selecting a transmission path based on the traffic engineering, which relates to the technical field of communication and is used for solving a problemof link congestion caused by improper selection of the transmission path. The method comprises the steps of determining candidate paths between source and destination nodes of a VPN (Virtual Private Network) service in the network according to constraints of the traffic engineering, wherein the constraints of the traffic engineering include that the bandwidth margin of each link in the candidate paths is greater than or equal to the required bandwidth of the VPN service; determining a selection value of each candidate path according to path ranking information, wherein path ranking informationincludes the bandwidth margin of each link in the candidate paths and the hop count or length of the candidate paths; and determining a transmission path between the source and destination nodes of the VPN service from the candidate paths according to path determination information, wherein the path determination information includes the selection value of each candidate path.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method and device for selecting a transmission path based on traffic engineering. Background technique [0002] VPN (Virtual Private Network, virtual private network), its function is: to establish a private network on the public network to facilitate encrypted communication. In order to improve the quality of service, operators have launched the application of traffic engineering in the telecom VPN network. Traffic engineering refers to the process of selecting transmission paths according to the characteristics of various data service flows, which is used to balance the load between different switches, routers and links in the network, and to control different VPN service flows in a complex network environment Take a different path. [0003] In the prior art, there may be multiple paths between the source and sink nodes of a VPN service. At present, methods such as t...

Claims

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Application Information

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IPC IPC(8): H04L12/803H04L12/721H04L12/46H04L12/723H04L45/50
CPCH04L12/4641H04L45/38H04L47/122H04L45/50
Inventor 张艳菲华一强唐雄燕
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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