Satellite MPLS (multi-protocol label switching) network flow rate balancing method based on SDN (software defined network) controller

Abstract

The invention discloses a satellite MPLS (multi-protocol label switching) network flow rate balancing method based on an SDN (software defined network) controller. An SDN controller is put on a network edge; the control plane of network equipment is separated from the data plane; the functions of the control plane are concentrated onto a special controller, so that the equipment complexity in the network is reduced. The data plane and the control plane are decoupled, and an SDN obtains great flexibility, so that the network has the characteristics of high expandability, easy maintenance, programmable performance and open performance. According to the method, the SDN controller peripherally collects network topology and network state information from a router / interchanger in a data plane through an OpenFlow protocol of a southbound interface; through calculation, the available bandwidth condition of each link is obtained, so that whether the path jam occurs or not is judged; whether the flow rate dispatching is needed or not is judged; the goal of collecting and analyzing the whole network flow rate distribution condition in real time is achieved; the link flow rate is reasonably deployed, so that the flexible control of the network flow rate is realized; in addition, the bandwidth resource utilization rate can be better improved.

Description

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

AI Technical Summary

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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