Demonstration of SDN-Enabled Hybrid Polling Algorithm for Packet Contention Resolution in Optical Data Center Network

Fu Wang; Bo Liu; Xuwei Xue; Lijia Zhang; Fulong Yan; Eduardo Magalhaes; Qi Zhang; Xiangjun Xin; Nicola Calabretta

doi:10.1109/JLT.2020.2976549

Demonstration of SDN-Enabled Hybrid Polling Algorithm for Packet Contention Resolution in Optical Data Center Network

Fu Wang
, Bo Liu
, Xuwei Xue (Corresponding author)
, Lijia Zhang
, Fulong Yan
, Eduardo Magalhaes
, Qi Zhang
, Xiangjun Xin
, Nicola Calabretta

Research output: Contribution to journal › Article › Academic › peer-review

8 Citations (Scopus)

Abstract

We propose and experimentally demonstrate a Software-Defined Network (SDN) enabled Hybrid Polling Algorithm for packet Contention Resolution (HPACR) in optical Data Center Network (DCN) based on Fast Optical Switches (FOS). Fast Semiconductor Optical Amplifier (SOA)-based buffer-less FOS with nanoseconds reconfiguration time are employed for interconnecting Top-Of-the Racks (TORs) switches with distributed flow control. Under the realistic 10 Gb/s server traffic, the network performance of the DCN employing the proposed HPACR algorithm is experimentally assessed. Results show that the HPACR increases 13.6% throughput at the high load of 1.0 and decreases the 75% contention ratio for the load >0.5 with respect to the traditional packet contention resolution methods. Based on the experimental parameters, a simulation platform is built to numerically evaluate the HPACR performance of DCN with 64 TORs connecting 1280 servers. The results show that HPACR improves the system performance by increasing the throughput by 5% compared with existing algorithms, reducing the TOR-to-TOR latency by 18.5%, and decreasing the packet loss by 14.1% at the load of 1.

Original language	English
Article number	9015983
Pages (from-to)	3296-3304
Number of pages	9
Journal	Journal of Lightwave Technology
Volume	38
Issue number	12
DOIs	https://doi.org/10.1109/JLT.2020.2976549
Publication status	Published - 15 Jun 2020

Funding

Manuscript received November 17, 2019; revised January 30, 2020 and February 20, 2020; accepted February 23, 2020. Date of publication February 27, 2020; date of current version June 16, 2020. This work was supported in part by Olympics Project ESTAR17207, in part by the National Science Foundation of China under Grants 61425022, 61522501, and 61675004, and in part by BUPT Excellent Ph.D. Students Foundation under Grant CX2018305. (Corresponding author: Xuwei Xue.) Fu Wang was with the Beijing University of Posts and Telecommunications, Beijing 100876, China. He is now with the Eindhoven University of Technology, 5600MB Eindhoven, Netherlands (e-mail: [email protected]).

Keywords

Contention resolution
data center networks
optical switches
packet switching

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10.1109/JLT.2020.2976549

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title = "Demonstration of SDN-Enabled Hybrid Polling Algorithm for Packet Contention Resolution in Optical Data Center Network",

abstract = "We propose and experimentally demonstrate a Software-Defined Network (SDN) enabled Hybrid Polling Algorithm for packet Contention Resolution (HPACR) in optical Data Center Network (DCN) based on Fast Optical Switches (FOS). Fast Semiconductor Optical Amplifier (SOA)-based buffer-less FOS with nanoseconds reconfiguration time are employed for interconnecting Top-Of-the Racks (TORs) switches with distributed flow control. Under the realistic 10 Gb/s server traffic, the network performance of the DCN employing the proposed HPACR algorithm is experimentally assessed. Results show that the HPACR increases 13.6\% throughput at the high load of 1.0 and decreases the 75\% contention ratio for the load >0.5 with respect to the traditional packet contention resolution methods. Based on the experimental parameters, a simulation platform is built to numerically evaluate the HPACR performance of DCN with 64 TORs connecting 1280 servers. The results show that HPACR improves the system performance by increasing the throughput by 5\% compared with existing algorithms, reducing the TOR-to-TOR latency by 18.5\%, and decreasing the packet loss by 14.1\% at the load of 1.",

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AB - We propose and experimentally demonstrate a Software-Defined Network (SDN) enabled Hybrid Polling Algorithm for packet Contention Resolution (HPACR) in optical Data Center Network (DCN) based on Fast Optical Switches (FOS). Fast Semiconductor Optical Amplifier (SOA)-based buffer-less FOS with nanoseconds reconfiguration time are employed for interconnecting Top-Of-the Racks (TORs) switches with distributed flow control. Under the realistic 10 Gb/s server traffic, the network performance of the DCN employing the proposed HPACR algorithm is experimentally assessed. Results show that the HPACR increases 13.6% throughput at the high load of 1.0 and decreases the 75% contention ratio for the load >0.5 with respect to the traditional packet contention resolution methods. Based on the experimental parameters, a simulation platform is built to numerically evaluate the HPACR performance of DCN with 64 TORs connecting 1280 servers. The results show that HPACR improves the system performance by increasing the throughput by 5% compared with existing algorithms, reducing the TOR-to-TOR latency by 18.5%, and decreasing the packet loss by 14.1% at the load of 1.

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Demonstration of SDN-Enabled Hybrid Polling Algorithm for Packet Contention Resolution in Optical Data Center Network

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