Routing method capable of ensuring service QoS based on SDN

A routing and business technology, applied in the field of computer networks, can solve problems such as poor algorithm fault tolerance, algorithm failure, and low resource utilization, and achieve the effects of improving fault tolerance, improving network resource utilization, and ensuring QoS

Active Publication Date: 2018-09-07
XIDIAN UNIV
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Problems solved by technology

But there are still the following deficiencies: (1) This algorithm only considers the service types that require one of delay and bandwidth, but many services in the real network do not only require a QoS parameter. For services that require both bandwidth and delay, this algorithm cannot guarantee its QoS very well, and the resource...

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  • Routing method capable of ensuring service QoS based on SDN
  • Routing method capable of ensuring service QoS based on SDN
  • Routing method capable of ensuring service QoS based on SDN

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0034] refer to figure 1 , the SDN network architecture applicable to the present invention includes an SDN controller, multiple OpenFlow switches and multiple host terminals. Among them, the host terminal is the bearing point of user services, which is used to generate various types of service data, such as voice services, video services and short message services; the OpenFlow switch is the data forwarding device in the entire architecture, which is used to provide SDN controllers with Network status information, such as link bandwidth information and link delay information. In addition, multiple OpenFlow switches on the optimal path are also responsible for receiving the flow table issued by the SDN controller and forwarding service data according to the flow table; SDN The controller is the core of the architecture, and also the bearing po...

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Abstract

The invention provides a routing method capable of ensuring service QoS based on SDN, used for solving the technical problem that in the prior art, a network resource utilization rate is not high andthe routing method is poor in fault tolerance. The method comprises the implementation steps as follows: a SDN controller acquires topological information, link bandwidth information and link delay information of a network; the SDN controller acquires a standby path set via computation; the SDN controller acquires a network QoS evaluation parameter and a weight parameter; the SDN controller computes a weight factor of each path in the standby path set, and sorts the paths in the stand by path set in an ascending sort to acquire a target path set; the SDN controller acquires the optimal path from the target path set, and acquires the standby path set; and the SDN controller judges whether the optimal path is faulted, if yes, the secondary optimal path is selected from the standby path set to serve as the optimal path, and otherwise, a selected optimal path packaging flow table is distributed to an OpenFlow switch to forward data.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and relates to a routing algorithm in a software-defined network platform, in particular to a routing method based on SDN guaranteeing service QoS, which can be used in network communication systems with higher requirements on service quality. Background technique [0002] In recent years, the rise of various new networks such as e-commerce, mobile networks, and big data has brought great convenience to users, and at the same time, users have higher requirements for the Quality of Service (QoS) of the network. The more important QoS parameters include bandwidth, time delay, etc., and different types of services have different requirements for QoS parameters. The scalability of the traditional network architecture is poor, and the performance of the equipment is fixed and single. It is difficult to meet the QoS requirements of the current new business. Frequent communication between mult...

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Application Information

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IPC IPC(8): H04L12/727H04L12/729H04L12/703H04L12/707H04L45/121H04L45/125H04L45/24H04L45/28
CPCH04L45/121H04L45/125H04L45/22H04L45/28
Inventor 张岗山朱成成赵林靖刘炯吴炜冯磊
Owner XIDIAN UNIV
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