Flow scheduling system and method based on SDN

Abstract

The invention relates to a flow scheduling system and method based on SDN. The method comprises the following steps: acquiring a network link parameter configured by a user; starting routing collection and flow collection processes; performing link analysis; judging whether a congested link exists, if so, scheduling the flow of the congested link to an idle link by a flow scheduling module, and otherwise, continuing to perform periodic link analysis. By adoption of the system and the method, being different from the system under distributed architecture, the flow scheduling method and system based on the SDN can comprehensively sense the link congestion or link faults; the network link heath condition updated in real time can be converted to a network link metric coefficient, and thus the selection of an optimal path is more accurate; and in the case of network link congestion, the flow scheduling method and system based on the SDN provided by the invention are started to quickly and effectively eliminate the link congestion, and the links are reasonably configured to maximize the bandwidth utilization rate, and flow load balance of the whole network can be realized.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to the technical field of traffic scheduling, and specifically refers to an SDN-based traffic scheduling system and method. Background technique [0002] With the continuous development of Internet services, users' requirements for network bandwidth increase rapidly, and communication network operators need to regularly expand the backbone network to meet service requirements. However, due to the unbalanced network demand in different regions and different time periods, service traffic will fluctuate and burst. In the existing network routing mechanism, the routing strategy is generally only based on the destination IP address and the shortest path, ignoring the dynamic changes in the available capacity of the network link, resulting in some links being congested in certain periods of time. The experience is degraded, and some links are very idle during certai...

AI Technical Summary

Problems solved by technology

Since the forwarding device under the distributed architecture integrates the control logic and data forwarding, this distributed traffic scheduling method cannot realize real-time global routing and traffic balancing scheduling, so local congestion of the link cannot be avoided.

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