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Multi-constraint routing method based on SDN network and controller

A multi-constraint and controller technology, applied in the field of network communication, can solve problems such as inability to adapt to business scenarios or application protocols

Inactive Publication Date: 2019-10-22
SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, the SDN controller uses a fixed shortest path algorithm, such as the fixed Dijkstra algorithm or the fixed Bellman-ford algorithm, which cannot adapt to different business scenarios or application protocols.

Method used

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  • Multi-constraint routing method based on SDN network and controller
  • Multi-constraint routing method based on SDN network and controller
  • Multi-constraint routing method based on SDN network and controller

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Embodiment Construction

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0053] Such as figure 1 The flow diagram of a multi-constraint routing method based on SDN network is shown in

[0054] 110. When the packet header information of the data packet received by the switch fails to match the flow table stored by the switch, the controller receives and parses the Packet-In packet to obtain the packet header field.

[0055] It should be understood that in this embodiment, the controller and the switch are both located ...

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Abstract

The invention relates to a multi-constraint routing method based on an SDN network, and a controller. The multi-constraint routing method comprises the steps that enabling a controller to receive andanalyze a Packet-In message transmitted by a switch when the packet header information of a data packet received by the switch fails to be matched with a flow table stored in the switch, and obtaininga message header field; obtaining the weight of each one-way link according to the message header field, a preset weight value table and the obtained numerical values of all parameters in the QoS parameter set of each one-way link in the SDN; and inputting the weights of all unidirectional links in the SDN into a Dijkstra algorithm to obtain an optimal path from the switch to the destination host, and issuing the optimal path to the switch. According to the optimal path from the switch to the destination host, which is obtained through calculation, the QoS numerical value of each link and theprotocol type and the service type of the data packet needing to be forwarded are referred, and the obtained optimal path can meet the requirement of actual service for QoS.

Description

Technical field [0001] The invention relates to the field of network communication, in particular to a multi-constraint routing method based on an SDN network and a controller. Background technique [0002] SDN (Software Defined Network) is a new innovative network architecture. With the widespread application of virtualization technology, IT resources will become an operable infrastructure like hydropower. As an important cloud infrastructure carrier, the cloud data center is due to the online migration of virtual machines and other data center layer-2 network requirements, virtual machines With new automation and self-service requirements such as perception, vlan isolation, and multi-tenant isolation, its virtual machine communication has become an important research topic, and SDN, with its flexible configuration and configuration management characterized by centralized control, control and forwarding separation, has become a solution to the cloud One of the main solutions fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/715H04L12/721H04L12/725
CPCH04L45/123H04L45/302H04L45/64
Inventor 史慧玲张新常张玮赵彦玲王鲁孙萌
Owner SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
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