SDN-based tiered routing path determination method and device

Abstract

An embodiment of the invention provides an SDN-based tiered routing path determination method and device that are applied to an inter-domain controller and an intra-domain controller in a software-defined network; the SDN-based tiered routing path determination method comprises the following steps: a cross-domain request of a data flow sent by the intra-domain controller is obtained; according to the cross-domain request, a start point network domain and an intermediate network domain where a source node is positioned are determined; network performance information sent by the intra-domain controller is obtained; according to the network performance information and a plurality of preset cross-domain route selection strategies, an optimal routing path for transmitting the above data flow in all network domains is determined; according to the start point network domain and the intermediate network domain, boundary information of a first network domain and boundary information of a second network domain are determined and sent to the intra-domain controller, and the intra-domain controller is enabled to determine the optimal routing path for data transmission in the network domains. Via the SDN-based tiered routing path determination method and device, optimal design of a cross-domain routing path can be realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining a hierarchical routing path based on SDN. Background technique [0002] SDN (Software Defined Network) is a new network architecture proposed by Stanford University in the United States. The design concept of SDN is to separate the network control plane from the data forwarding plane and realize programmable control. [0003] At present, the SDN control plane is mostly composed of single-instance controllers, and its performance, reliability and other indicators are difficult to meet the requirements of large-scale deployment. In addition, in the face of different network scenarios, the requirements for the network are very different. In order to better deploy SDN, the industry proposes a hierarchical and domain-specific SDN architecture. The hierarchical and domain-based SDN network architecture can make the network more logic...

AI Technical Summary

Problems solved by technology

[0004] In the existing method for determining the SDN cross-domain routing path of hierarchical division, including inter-domain controllers and intra-domain controllers, the control and processing operations of SDN cross-domain routing paths are realized by the inter-domain controllers, and the intra-domain controllers only serve as The implementation unit of the control command of the inter-domain controller, the intra-domain controller has no control logic, in order to coordinate the implementation of the control logic between the inter-domain controller and the intra-domain controller, the existing technology needs to add coordination between the intra-domain controller and the inter-domain controller In other words, a three-level design architecture is required to determine the SDN cross-domain routing path, which makes the design architecture of the cross-domain routing path complex and brings unnecessary costs

Images