What Applications Can be Deployed with Software Defined Elastic Optical Networks?

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1 What Applications Can be Deployed with Software Defined Elastic Optical Networks? Yongli Zhao State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications (BUPT), Beijing , China Tel : ; Web: ipoc.bupt.edu.cn Group Meeting, Feb

2 Outline 1. Background 2. Software defined elastic optical networks 3. Applications deployment with SD-EON 4. Conclusions 2

3 Background of EON New application / Large traffic High-rate applications, such as VoD, HD-TV, cloud computing, grid applications Bandwidth-consuming and highly dynamic Dynamic reconfigurations Fixed grids is short of the adaptability for the connection bandwidth variation High speed transmission 100G and beyond/super-channel Multi-carrier modulation / OFDM Cost-effective, scalable networking Flexible-grid network (EON) is regarded as a promising candidate for future transport infrastructure. 3

4 WDM VS EON Drawbacks of WDM a) fixed rigid and coarse granularity b) require full allocation of a wavelength c) inefficient spectrum utilization Source: ECOC 2009 Symposium on Dynamic Multi-Layer Mesh Network... Why, How, and When? September 23, 2009 EON a) a flexible and fine granularity b) adaptively provide the requirement c) deliver high efficiency, flexibility and scalability 4

5 Challenges and problems How to overcome these issues? Routing Spectrum Assignment Modulation Level Assignment Symbol Rate Assignment Physical Layer Impairments Considerations Rerouting Restrictions Considerations Design Scope FEC Assignment Power Level Assignment Subcarrier Contiguity Considerations Research Issues in EON Inter-Subcarrier and Inter-Superchannel Spacing Assignment Spectrum Defragmentation Subcarrier Continuity Considerations Optical Grooming Reactive Resilience Mechanisms Proactive Control technology Application Methodology Static Planning Dynamic Planning (M)ILP Heuristic Dedicated Restoration Shared Restoration Tomkos I, et al. A tutorial on the flexible optical networking paradigm. Proceedings of the IEEE, 2014, 102(9):

6 Intelligent control technology Automatically Switched Optical Networks (ASON) Path Computing Element (PCE) Software Defined Optical networks (SDON) Lightpath establishment & tear-down on demand Distributed signaling & routing Protocol: GMPLS Constraint-based path computation in multi-layer/-domain Centralized routing & resource assignment Protocol: PCEP 6 Optical virtualization Unified control & Resource integration Protocol: OpenFlow

7 Outline 1. Background 2. Software defined elastic optical networks Control architecture Testbed 3. Applications deployment with SD-EON 4. Conclusions 7

8 Multi-controller cooperation architecture Yongli Zhao, Jie Zhang, et al. Virtual Optical Network Provisioning with Unified Service Logic Processing Model for Software Defined Multi- Domain Optical Network, Optical Engineering, 54(12), Dec

9 SDON testbed APP Store Datacenter & SDON Orchestration Room 423 DataCenter 1 Centec V330 (OFS) SDON Domain 1 OFA Chaoyang, Beijing ToR & Server... SD-NE Haidian, Beijing Room 342 DataCenter 2 SDON Domain 2 Centec V330 (OFS) OFA Field-Installed Fiber Span 21Vianet Data Center SDON Domain 3 Commercial Data Center OFA Cisco C3560 (ToR) Finisar Waveshaper Finisar Waveshaper Centec V330 (OFS) SD-ROADM IBM X3650M3 (Server) SD-ROADM Yiming Yu, Yongli Zhao, et al, Journal of Optical Communications and Networking, vol.7, no.2, A , Feb

10 Outline 1. Background 2. Software defined elastic optical networks 3. Applications deployment with SD-EON 4. Conclusions 10

11 Potential applications with SD-EON Datacenter A User APP innovation with SDON APP 1 Spectrum defragme ntation Virtual network provisioning VM migration Service scheduling expert C SDON Controller Datacenter B Service 1 Service 3 Service 2 t 0 t 1 t 2 t 3 t 4 t 5 t 6 11

12 A. Virtual network provisioning (VON) 12 Demonstrated on ONS2015.

13 Virtual network provisioning (VON) Wei Wang, Yongli Zhao, Jie Zhang, et al., First Demonstration of Virtual Transport Network Services with Multi-Layer Protection Schemes over Flexi- Grid Optical Networks, Communications Letter, vol.13, no.9,

14 Physical Top o Virtual Topo Differentiated protection schemes for VON Three protection schemes for VON 1. CLCP: Customer Layer Connection Protection. 2. PLTP: Provider Layer Topology Protection. 3. PLCP: Provider Layer Connection Protection. CLCP w.2 physical node and link w.3 PLTP w.2 w.3 virtual node and link b.2 b.3 PLCP w.2 working path backup path w.3 1 w.6 w.5 Working & Backup Topology 2 3 w.6 w.5 Working Topology 1 b.6 b.5 Backup Topology w.6 w.5 Working Topology (a) (b) 4 (c) 6 5 Backup Topology 4 Wei Wang, Yongli Zhao, Jie Zhang, et al., First Demonstration of Virtual Transport Network Services with Multi-Layer Protection Schemes over Flexi- Grid Optical Networks, Communications Letter, vol.13, no.9,

15 Experimental results 15

16 Experimental results 16

17 Experimental results Bloking Probability CLCP PLTP PLCP Resource Occupation Rate CLCP PLTP PLCP Traffic Load (Erlang) Traffic Load (Erlang) PLTP and PLCP performs better than CLCP, for the reason that the network tenant has only one work topology to deploy both work connection and backup connection under CLCP. PLCP can protect VON most efficiently. Wei Wang, Yongli Zhao, Jie Zhang, et al., First Demonstration of Virtual Transport Network Services with Multi-Layer Protection Schemes over Flexi- Grid Optical Networks, Communications Letter, vol.13, no.9,

18 B. Service scheduling expert (SSE) Start-time Service 1 Service 3 End-time Src Node SSE Service 2 Dst Node Bandwidth Submit Service 1 Service 2 Service 2 GUI API GUI t 0 t 1 t 2 t 3 t 4 t 5 t 6 Transport Network CDPI Transport Controller NE5 NE1 NE3 NE6 NE2 NE4 ODU/PKT layer WDM layer Costumer submit deadline driven services to Transport Controller. Transport Controller reserve required resource during working time. 18 SSE reschedule the services by modifying their working time. Start time arrive, and Transport Controller setup lightpath for corresponding service. Demonstrated on ONS2015.

19 Overall GUI of SSE Advanced Reservation (AR) requests input panel Simulation Topology Functional Button Service List 19 One Scheduled Service Item

20 Load Migrate via Rescheduling Heavy Load Detected Wei Wang, Yongli Zhao, Jie Zhang, et al., Demonstration of Parallel Service Re-Provisioning over Advanced Reservation enabled Software Defined Optical Transport Networks, OFC2016, Anaheim, CA, USA, March

21 Load Migrate via Rescheduling Load Migration Wei Wang, Yongli Zhao, Jie Zhang, et al., Demonstration of Parallel Service Re-Provisioning over Advanced Reservation enabled Software Defined Optical Transport Networks, OFC2016, Anaheim, CA, USA, March

22 APP demonstrated on ONS

23 APP deployment in field trial Locations of three domains:quanzhou, Xiamen and Fuzhou in Fujian province. 5 cooperating organizations: China Telecom, BUPT, Huawei, ZTE and FiberHome Customers: Data plane property: Inter-domain links are 10Gbit/s, and intra-domain links are 10Gbit/s. Supported client interfaces include GE and 10 GE interfaces. Yajie Li, Yongli Zhao, Jie Zhang, et al., First Field Trial of Virtual Network Operator Oriented Network on Demand (NoD) Service Provisioning over Software Defined Multi-Domain Optical Networks with Multi-Vendor OTN Equipment, ACP2015, Hongkong, China, Nov. 2015, Postdeadline paper 23

24 Outline 1. Background 2. Software defined elastic optical networks 3. Applications deployment with SD-EON 4. Conclusions 24

25 Conclusions Programmability and virtualization are keys to SD-EON Series of technologies of SD-EON are moving fast to mature Various applications have been developed in APP store, such as BoD, VON, SSE, SRD, VM. Different potential applications are to be developed to drive the deployment of SD-EON 25

26 Thank you for your attention! Yongli Zhao State Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications (BUPT), Beijing , China Tel : ; Web: ipoc.bupt.edu.cn 26

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