Multistage wavelength-division-multiplexing ring light network

Abstract

The invention proposes a multistage wavelength-division-multiplexing ring light network, and the network comprises a data transmission plane and control nodes unified in the whole network. The data transmission plane comprises p parallel first-stage rings, m second-stage rings, and a frame top / cluster switcher connected with the second-stage rings, wherein the first-stage and second stage rings are connected with each other through transannular frame top / cluster switchers. The network employs the technology of wavelength division multiplexing, is high in speed, is large in capacity, is good in extendibility, employs the wavelength information to carry out the internal frame-crossing data exchange of a data center, and partly irons out the defects of a conventional tree-shaped network in the data center. A wavelength division multiplexing looped network in the above structure just can be applied to a switching network where C band can achieve 256000 servers through calculation, thereby providing technical reference for the design of the switching network of a large-scale data center. Meanwhile, the network can be used for the exchange among high-performance computer CPU clusters, and also can be used for an end-end switching optical network for telecommunication business.

Description

technical field [0001] The invention belongs to the field of optical fiber communication and relates to a multi-level wavelength division multiplexing ring optical network. Background technique [0002] In the data center, data exchange between servers needs to occupy a large bandwidth. Building a data center switching network with high speed, large capacity, strong scalability, flexible configuration, and energy saving and high efficiency is a very important link in building a large-scale data center. Traditional There are many disadvantages in the tree-shaped switching network. For example, because the closer to the root node, the heavier the load, the performance of the root node is extremely high, and the performance of the root node limits the size of the data center; the failure of the upper-level switching node will cause It cannot work normally; as the scale of the data center increases, the power consumption of the tree-shaped switching network will increase sharply...

AI Technical Summary

Problems solved by technology

[0002] In the data center, data exchange between servers needs to occupy a large bandwidth. Building a data center switching network with high speed, large capacity, strong scalability, flexible configuration, and energy saving and high efficiency is a very important link in building a large-scale data center. Traditional There are many disadvantages in the tree-shaped switching network. For example, because the closer to the root node, the heavier the load, the performance of the root node is extremely high, and the performance of the root node limits the size of the data center; the failure of the upper-level switching node will cause Unable to work normally; with the increase of the data center scale, the power consumption of the tree-shaped switching network will increase sharply, etc.

[0003] In recent years, the use of optical network technology to solve the problems of using traditional tree structures in data centers has become a research hotspot in the direction of optical networks, such as the Helios structure proposed by N.Farrington et al., the Hi-LION structure proposed by S.Yoo et al., etc. However, the above structure has problems such as large switching delay of the optical switch, or high manufacturing cost of the device.

[0004] In high-performance computers, the use of optical interconnection can greatly increase the communication bandwidth between CPUs, reduce the data transmission delay between CPUs, and build optical interconnections in high-performance computers with high bandwidth, low latency, good scalability, and controllable networking costs. The network is a key technology to improve the performance of high-performance computers. Similarly, the Hi-LION structure proposed by S.Yoo et al. has the problem of high device manufacturing costs.

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