All-optical interconnection data center network system based on software defined network and data communication method

Abstract

The invention relates to an all-optical interconnection data center network system based on a software-defined network and a data communication method, and relates to the technical field of cloud computing and communication. A passive optical network interconnection server constructed rack of the system replaces a traditional top-of-rack switch. An optical Clos network interconnects the racks to construct an all-optical interconnection data center network. An in-rack passive optical network is composed of a coupler module. The optical Clos network is composed of a wavelength control module, an array waveguide grating router, and a coupler. In-rack software defined controllers and inter-rack software defined controllers are interconnected in a hierarchical structure, and respectively control data communication of in-rack servers and inter-rack servers in a centralized mode so as to separate control and forwarding. The all-optical interconnection data center network system of the invention is highly energy-saving and cost-effective, and can improve the management efficiency and network performance of the data center network.

Description

technical field [0001] The invention belongs to the technical field of cloud computing and communication, and relates to a software-defined all-optical interconnection data center network system and a data communication method. Background technique [0002] Cloud computing is a computing model that uses the Internet to access shared resource pools (such as servers, network resources, storage devices, applications, etc.) anytime, anywhere, on demand, and conveniently. Data Center is the core platform and infrastructure for cloud computing to realize centralized processing, storage, transmission, exchange and management of information. Data Center Network (DCN) is a network that interconnects large-scale (tens of thousands or even hundreds of thousands) of servers in the data center to realize large-scale distributed computing, and is used for the transmission and exchange of large amounts of data between servers in the data center. As the infrastructure of cloud computing an...

AI Technical Summary

Problems solved by technology

The traditional network is relatively simple, but there are also many problems: high energy consumption, complex links, high delay, and the core switch at the top of the tree structure is likely to become a bandwidth bottleneck and limit the scalability of the network

Optical circuit switching is usually based on micro-electromechanical systems (MEMS). The long configuration time of MEMS leads to a decrease in the delay performance of optical circuit switching. However, for long-term and high-traffic communications, optical circuit switching can provide high-bandwidth switching paths.

However, for bursty small traffic, its performance will be significantly reduced

Although the optical interconnection DCN architecture has the advantages of high bandwidth and low latency, the problem of high energy consumption has not been well resolved. With the continuous expansion of the DCN network scale, its energy consumption problem has become increasingly prominent. One of the challenges for the normal operation of DCN

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