Adaptive energy-saving route method for SDN network and based on link utilization rate

A utilization rate and self-adaptive technology, applied in data exchange network, digital transmission system, electrical components, etc., can solve the problem of inability to take into account changes in network topology information and QoS requirements, to reduce computing time, good energy-saving effect, low time The effect of complexity

Active Publication Date: 2016-11-23
HANGZHOU DIANZI UNIV
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  • Adaptive energy-saving route method for SDN network and based on link utilization rate

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[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, the present invention provides an SDN network-oriented adaptive energy-saving routing method based on link utilization, comprising the following steps:

[0019] Step (1) transmits the network topology and bandwidth utilization situation collected by the router to the SDN controller, calculates the optimal path between the nodes according to the network information and puts it into the candidate path table for standby;

[0020] Step (2) analyzes the global network topology information, and prunes the link that can be closed according to the standard that no traffic passes through the link and the connectivity is guaranteed;

[0021] Step (3) Execute the energy-saving routing algorithm, if the optimal path length is greater than the threshold D or does not meet the QoS requirements, the candidate path is enabled. On the contrary, the opti...

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Abstract

The invention discloses an adaptive energy-saving route method for an SDN network and based on link utilization rate. According to features of the SDN network and for solving the shortcoming in an existing energy-saving route algorithm, the link utilization rate which is changed in real time is used as a link cost, and before route selecting, information of a network topology structure and flow matrix is acquired at first. Then a network topology is optimized and pruned, and calculating time of the route algorithm is shortened. According to the route scheme, demands of QoS can be guaranteed while the energy is saved, and after running for a period of time, input streams are automatically gathered on a specific heavy-load link. Finally, a non-load link is closed on the premise of guaranteeing network connectivity. By the method, the energy-saving effect is good in a simulating network, and time complexity is relatively low.

Description

technical field [0001] The invention belongs to the technical field of network energy saving, and in particular relates to an energy-saving routing protocol for selecting a path by utilizing a real-time changing traffic matrix in an SDN network. The present invention relates to a method of calculating optimal paths based on link utilization to concentrate traffic on heavily loaded links and to close unused links. Background technique [0002] At present, energy conservation and emission reduction has gradually become a key issue of the Internet, because with the rapid development of the Internet, many problems such as high energy consumption, low utilization rate, and huge waste have been brought about. At the same time, the increase of energy consumption costs also limits the further development of the Internet. The traditional network system design has two principles. One is the excess resource supply, that is, the supply is greater than the demand, which can make the net...

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Application Information

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IPC IPC(8): H04L12/751H04L12/729H04L12/725H04L45/02H04L45/125
CPCH04L45/02H04L45/125H04L45/302
Inventor 姜明汤景凡张旻费唯
Owner HANGZHOU DIANZI UNIV
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