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A low-risk routing method in differentiated services network

A differentiated service, low-risk technology, applied in the field of communication networks, can solve problems such as single level and single failure mode

Inactive Publication Date: 2018-11-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a low-risk routing method in a differentiated service network, which is used to solve the defects of single level and single failure mode in consideration of routing risk in the prior art

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  • A low-risk routing method in differentiated services network

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Embodiment Construction

[0038] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0039] figure 1 It is a network topology diagram used in the embodiment of the present invention. The network is a LATAX network with 28 nodes and 46 links. In this embodiment, there are 5 types of services in the network, and the corresponding unitized service importances are 0.99, 0.94, 0.62, 0.29 and 0.13 respectively; the corresponding unitized flows are 2.048, 2.048, 0.133, 1.387 and 3.547 respectively. The total number of existing services in the network is 50, the number of each type of service is randomly allocated, the source and sink nodes of each service are randomly allocated, and the paths of existing services are all the shortest paths. figure 1 In , the numbers outside the parentheses on the link indic...

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Abstract

The invention relates to the technical field of communication networks, and discloses a method for distinguishing a low-risk route in a service network, so as to solve the problems of single risk layer and single network element failure mode considered by the traditional low-risk route method. The method comprises the steps of: firstly, establishing a single layer network route risk module in a service layer, a transmission layer and a physical topology layer respectively aiming at features for distinguishing importance degree differentiation of services in the service network; secondly, establishing a comprehensive route risk model having self-adaptive parameters according to influence degree of the different layers on the network and service bearing situations; and finally regarding a network comprehensive risk as an optimization object, and solving a route making the network comprehensive risk minimal by utilizing an artificial immune algorithm. The method provided by the invention overcomes the one-sidedness of considering the network route risk form a single layer and the limitation of the single network element failure mode in the existing research, starting from the essence that the network serves the service, determines calculation parameters of the comprehensive route risk, and can better represent requirement of network users on network route risks.

Description

technical field [0001] The invention belongs to the technical field of communication networks, and in particular relates to a low-risk routing method in a differentiated service network. Background technique [0002] Optimizing routes is the most effective way to reduce network risks without changing the network topology. Many researchers have studied the network low-risk routing problem from different levels. Ming Xia, MassimoTornatore and others took the optical network as the research object, described the main risk characteristics of the link by referring to the link at the transport layer, and proposed a risk-aware routing method based on this, which effectively reduces the network service violation of the service level agreement. (SLA) ratio; Sang-WoonJeon et al. proposed a routing method based on the Dijkstra algorithm to achieve the minimum delay in heavy-loaded networks. Its essence is to use all or part of the link information to achieve network load balancing, so...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721
CPCH04L45/14
Inventor 樊冰闫江毓吴润泽唐良瑞
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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