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Satellite mpls network traffic balancing method based on sdn controller

A technology of network traffic and equalization method, applied in the field of satellite networks, can solve problems such as unbalanced network traffic, achieve the effects of simplifying control, avoiding increased instability, and improving service quality

Active Publication Date: 2019-09-27
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0009] The purpose of the present invention is to provide a satellite MPLS network traffic balancing method based on an SDN controller, which extracts the control plane from the network equipment and concentrates it on the SDN controller. The SDN controller perceives the link bandwidth utilization rate, collects , Analyze the distribution of the entire network traffic, and solve the problem of unbalanced network traffic

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  • Satellite mpls network traffic balancing method based on sdn controller
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  • Satellite mpls network traffic balancing method based on sdn controller

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Embodiment Construction

[0034] The present invention is described in further detail now in conjunction with accompanying drawing. The satellite MPLS network architecture based on the SDN controller is described first. In order to realize the functions of sensing link bandwidth utilization and collecting and analyzing the traffic distribution of the entire network, the SDN controller is placed on the edge of the satellite MPLS network and is on the ground. The entire architecture includes four communication nodes, which are satellites, satellite access equipment, gateway stations and network control centers. The MPLS network is further divided into a global satellite MPLS network and a terrestrial MPLS subnet. The satellite node is an intermediate LSR of the global satellite MPLS network and handles the transmission of services. The network control center is responsible for handling signaling. The satellite network access device is the access point from the ground user subnet to the satellite MPLS n...

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Abstract

The invention discloses a satellite MPLS network traffic balancing method based on an SDN controller. By placing an SDN controller at the edge of the network, the control plane of the network equipment is separated from the data plane, and the functions of the control plane are concentrated on this dedicated controller, so that The complexity of the devices in the network is reduced. By decoupling the data plane and the control plane, SDN achieves great flexibility, making the network highly scalable, easy to maintain, programmable, and open. In the present invention, the SDN controller periodically collects network topology and network status information from routers / switches in the data plane through the OpenFlow protocol of the southbound interface, and obtains the available bandwidth of each link through calculation, thereby judging whether the path is congested , Whether traffic scheduling is required to achieve the purpose of real-time collection and analysis of the traffic distribution of the entire network, and link traffic can be reasonably allocated, thereby realizing flexible control of network traffic and better improving bandwidth resource utilization.

Description

technical field [0001] The invention belongs to the technical field of satellite networks, and in particular relates to a satellite MPLS network traffic balancing method based on an SDN controller, so as to improve the existing satellite MPLS network technology. Background technique [0002] Compared with the traditional terrestrial network, the satellite network has two characteristics. On the one hand, the nodes in the satellite network are mainly satellites in space, which brings problems such as topology structure, transmission time extension, and limited resources on the satellite; on the other hand, the satellite network serves global users, and must simultaneously To support reliable transmission of multiple services, this puts forward new requirements for the efficiency, quality and coverage of network transmission. At present, with the continuous increase of end users' demand for integrated services, we need some more optimized satellite network technologies to imp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/723H04L12/721H04L12/803H04B7/185H04L12/24H04L45/50
CPCH04B7/18513H04L41/12H04L45/50H04L45/70H04L47/125
Inventor 孙力娟李颖茹韩崇周剑王娟郭剑肖甫王汝传
Owner NANJING UNIV OF POSTS & TELECOMM