SDN-based large flow load balancing system and method

Abstract

The present invention discloses a large flow load balancing system and method based on SDN, which mainly solves the problems of uneven load and link congestion in the core layer of the existing data center network. The system of the present invention includes the underlying network of Fat-Tree and SDN A controller, the SDN controller is additionally equipped with a topology information module, a large flow routing table module, and a large flow routing calculation module, wherein the large flow routing calculation module is a large flow calculation path based on the information maintained by the topology information module and the large flow routing table module , adopt packet-level multi-path routing policy at the source-aggregation layer switch, and complete out-of-sequence packet scheduling at the destination-aggregation layer switch. The present invention adopts a multi-path routing strategy for large flows in the core layer of the Fat-Tree network, overcomes the problems of uneven load and link congestion in the core layer of the data center network, introduces a scheduling mechanism for large flow data packets, and overcomes the problem of The out-of-order problem of packets can be used for data forwarding.

Description

technical field [0001] The invention belongs to the technical field of communication networks, and in particular relates to a large flow load balancing technology, which can be used in a data center network with a Fat-Tree structure. Background technique [0002] With the rapid growth of Internet online business users and public access bandwidth, the data center network traffic presents a trend of rapid growth. Internet services have put forward higher and higher transmission quality requirements for data centers, including large bandwidth, low latency, security guarantees, and flexible scheduling. Under this trend, various solutions have emerged. The software-defined network SDN technology represented by the OpenFlow protocol is a new type of network switching model that has completely subverted the original control and data forwarding. The method of using the same plane and the separation of the control plane and the forwarding plane greatly simplifies the network forward...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a SDN-based large-flow load balancing system and method with remarkable balancing effects based on the Fat-Tree topology commonly used in the current data center network, so as to solve the problem of uneven load and chain link existing in the core layer of the network. road congestion problem

Images