SDN-Controlled and Orchestrated OPSquare DCN Enabling Automatic Network Slicing With Differentiated QoS Provisioning

Autor: Bitao Pan, Fernando Agraz, Nicola Calabretta, Fu Wang, Salvatore Spadaro, Xiaotao Guo, Fulong Yan, Albert Pages, Xuwei Xue
Přispěvatelé: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques, Electro-Optical Communication, Low Latency Interconnect Networks
Rok vydání: 2020
Předmět:
FOS: Computer and information sciences
Computer science
Optical interconnects
Latency (audio)
Topology (electrical circuits)
02 engineering and technology
01 natural sciences
Computer Science - Networking and Internet Architecture
010309 optics
Software defined networking
020210 optoelectronics & photonics
Comunicacions mòbils
Sistemes de
Packet loss
0103 physical sciences
Optical switches
0202 electrical engineering
electronic engineering
information engineering
Forwarding plane
Comunicacions òptiques
Network performance
Routing control plane
Networking and Internet Architecture (cs.NI)
Optical communications
business.industry
Network packet
Quality of service
Provisioning
Data center network
Enginyeria de la telecomunicació [Àrees temàtiques de la UPC]
Load balancing (computing)
Atomic and Molecular Physics
and Optics
Wireless communication systems
Flow control
business
Computer network
Zdroj: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Journal of Lightwave Technology
Journal of Lightwave Technology, 38(6):8955836, 1103-1112. IEEE/LEOS
ISSN: 1558-2213
0733-8724
Popis: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works Optical switching techniques have the potential to enable the optical data center network (DCN) interconnections providing high capacity and fast switching capabilities, overcoming thus the bandwidth and latency bottleneck of present electrical switch-based multi-tiered DCNs. The rapid growth of multi-tenant applications with heterogeneous traffic require specialized quality of service (QoS) in terms of packet loss and latency to the DCN infrastructure. Slicing the DCNs into dedicated pieces according to the deployed applications, differentiated QoS, and high resource utilization can be provided. However, slicing the optical DCNs still needs to be investigated because the Software-defined Networking (SDN) technique is developed for the electrical networks, not fully supporting the properties of the optical network. Additionally, Network Slices (NS) need to be automatically provisioned and reconfigured, to provide flexible slice interconnections in support of the multi-tenant applications to be deployed. In this article, we propose and experimentally assess the automatic and flexible NSs configurations of optical OPSquare DCN controlled and orchestrated by an extended SDN control plane for multi-tenant applications with differentiated QoS provisioning. Optical Flow Control (OFC) protocol has been developed to prevent packet losses at switch sides caused by packet contentions. The extended OpenFlow (OF) protocol of SDN is deployed as well in support of the optical switching characteristics. Based on the collected resource topology of data plane, the optical network slices can be dynamically provisioned and automatically reconfigured by the SDN control plane. Meanwhile, experimental results validate that the priority assignment of application flows supplies dynamic QoS performance to various slices running applications with specific requirements in terms of packet loss and transmission latency. In addition, the capability of exposing traffic statistics information of data plane to SDN control plane enables the implementation of load balancing algorithms further improving the network performance with high QoS. No packet loss and less than 4.8 µs server-to-server latency can be guaranteed for the sliced network with highest priority at a load of 0.5. This work is supported by Olympics project (ESTAR17207) and Metro-Haul project (G.A. 761727).
Databáze: OpenAIRE
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