Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers

WANG Jintao; LIU Fengqing

doi:10.13756/j.gtxyj.2024.230117

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Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers

更新时间：2024-10-08

- Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers
- Study on Optical Communications Issue 5, Pages: 23011701-23011706(2024)
- 作者机构：
  
  南京邮电大学　电子与光学工程学院、柔性电子（未来技术）学院，南京　210023
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2024.230117
  CLC： TN929.11
- Published：10 October 2024，
  
  Received：26 December 2023，
  
  Revised：05 January 2024，
- 稿件说明：
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王金涛，刘逢清. 光互连数据中心网络架构与业务路由技术研究[J].光通信研究，2024(5)：230117.

Wang J T, Liu F Q. Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers[J]. Study on Optical Communications, 2024(5)：230117.
王金涛，刘逢清. 光互连数据中心网络架构与业务路由技术研究[J].光通信研究，2024(5)：230117. DOI： 10.13756/j.gtxyj.2024.230117.

Wang J T, Liu F Q. Research on Intra-rack Architecture and Routing Technology of Optical Interconnection Networks for Data Centers[J]. Study on Optical Communications, 2024(5)：230117. DOI： 10.13756/j.gtxyj.2024.230117.

摘要

【目的】

目前已提出的数据中心光互连网络结构中，大多将光网络用于交换机间的机架间通信，而机架内服务器之间的通信则通过电以太网交换机实现。由于电以太网交换机功率较大且数量众多，目前所提出的数据中心光互连网络存在能耗高、带宽低和分组时延大等问题。为了进一步改善数据中心光互连网络的性能，文章提出了一种基于可重排无阻塞三级 Clos网络的机架内光互连网络结构。

【方法】

在此结构中，机架内服务器通过1个三级Clos网络实现相互连接，同时结合文章所提的多波长路由算法可实现机架内服务器间的无阻塞通信。

【结果】

文章使用OMNET＋＋软件进行了仿真验证，结果显示，文章所提结构的吞吐量在同等条件下比传统机架内电交换提高20%，端到端平均时延减少90%，能耗减少67%。

【结论】

通过仿真对比可知，文章所提结构可以改善数据中心光互连网络的带宽利用、分组时延及能耗等性能。

Abstract

【Objective】

At present

most of the proposed data center optical interconnection network architectures use optical networks for inter-rack communication among switches

while the intra-rack communication among servers is still realized by electrical Ethernet switches. Due to the large power and large number of electrical Ethernet switches

the existing data center optical interconnection networks have the problems of high energy consumption

low bandwidth provision and large packet delay.

【Methods】

In order to further improve the performance of data center optical interconnection network

this paper proposes an in-rack optical interconnection network architecture based on a rearrangeable non-blocking Clos network. In this architecture

servers in the rack are connected to each other through a three-stage Clos network. Non-blocking communication between servers in the rack can be achieved by the proposed multi-wavelength routing algorithm.

【Results】

In this paper

OMNET+ + software is used for simulation verification. The simulation results show that the throughput of the proposed architecture is 20% higher than that of the traditional in-rack electrical switching under the same conditions. The average end-to-end delay is reduced by 90%

and the energy consumption is reduced by 67%.

【Conclusion】

It also demonstrates that the proposed architecture can improve the performance of bandwidth usage

packet delay and energy consumption in a data center optical interconnection network.

关键词

光互连数据中心网络架内通信多级交换波长路由

Keywords

optical interconnectiondata center networkintra-rack communicationmultistage switchingwavelength routing

references

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