![© 2018 ADVA Optical Networking. All rights reserved.1919
Disaggregation – Operator Concepts & Vision
[U. Hölzle,
Plenary Talk,
OFC 2017 ]
https://www.youtube.com/watch?v=n9zEiGyvJ-A [M. Filer et al., JOCN,, Vol. 8, No. 7, 2016]
https://0201.nccdn.net/1_2/000/000/098/a85/Open-ROADM-whitepaper-v1-0.pdf](https://image.slidesharecdn.com/metro-network-transformation-190306030457/85/Metro-Network-Transformation-19-320.jpg)
Uploaded byAPNIC
Metro Network Transformation
The document discusses metro network transformation towards smart, high-capacity infrastructure through network disaggregation and the use of new technologies like software-defined coherent optics. It describes the benefits of disaggregation including flexibility, avoidance of vendor lock-in, and support for multi-vendor environments. Several industry approaches to disaggregated network management are presented, along with recent multi-vendor trials demonstrating interoperability. Compact reconfigurable optical add-drop multiplexers and coherent modulation are highlighted as key technologies enabling capacity and reach optimization in metro networks.
More Related Content
Similar to Metro Network Transformation
Metro Network Transformation
- 1. Metro network transformation APRICOT2019, DAEJEON, SOUTH KOREA Evolution towards a smart high-capacity infrastructure
- 2. © 2018 ADVAOptical Networking. All rights reserved.22 Flexibility to deploy the best-in-class equipment for each network needs OPENNESS Remote configurable and scalable optical layer technology at metro economics FLEXIBILITY AND OPERATIONAL SIMPLICITY Grooming of low speed services for highest spectral efficiency COST-EFFICIENCY OF COHERENT MODULATION Time-sensitive optical transport compliant with most stringent sync demands PRECISE SYNCHRONIZATION OF 4G, 5G, … Drivers for metro network evolution
- 3. © 2018 ADVAOptical Networking. All rights reserved.33 • Triggers innovation and evolution • Accommodates to different lifecycles • Enables flexibility to deploy the best-in-class equipment for each network needs • Facilitates multi-vendor environments • Avoids implementation lock-ins • Integrates into open-source orchestration systems Disaggregation benefits Unlocks innovation and enables flexible connectivity solutions Openness drives disaggregation Partial disaggregation: Terminal and OLS as separate elements Different lifecycles of optical components OLSTerminal Terminal Value Optical line system Fiber 3 years+ 10 years+ Transponder Depreciation
- 4. © 2018 ADVAOptical Networking. All rights reserved.44 Existing OLS + Third-party terminals • Ability to transport alien wavelengths? • Alien wavelengths supported by network planning tool? • SW integration for routing and alarming? New OLS deployment + Third-party terminals • Planning tool capable of supporting alien waves • Efficient optical power management to maximize transmission reach / functionality • Network management tool with supporting open APIs Functional disaggregation of terminals from the line system Partial disaggregation scenarios Third-party terminal Third-party terminalNew OLS Third-party terminal Third-party terminalExisting installed OLS
- 5. © 2018 ADVAOptical Networking. All rights reserved.55 Disaggregated management and orchestration Tributary Layer Aggregation: E.g. Voyager API Packet Layer API API Multi-layer/vendor Orchestration API VerticalDisaggregation Horizontal Disaggregation NMS/OSS Transponder Trans/Mux- ponder 100 GbE 10 Gbps 400 GbE NMS Optical Layer OLS Domain Controller API API
- 6. © 2018 ADVAOptical Networking. All rights reserved.66 Metro OLS pitfalls “ROADMs are not needed in nodes with a low amount of add/drop wavelengths” “Need for contentionless ROADMs everywhere” “ROADMs cannot be deployed in street cabinets”
- 7. © 2018 ADVAOptical Networking. All rights reserved.77 Metro OLS pitfalls “ROADMs are not needed in nodes with a low amount of add/drop wavelengths” “Need for contentionless ROADMs everywhere” “ROADMs cannot be deployed in street cabinets”
- 8. © 2018 ADVAOptical Networking. All rights reserved.88 Massive investment and focus on degree-2 ROADMs Metro networks need two types of ROADM Source: OVUM Optical Networks Forecast January 2019
- 9. © 2018 ADVAOptical Networking. All rights reserved.99 Compactness, scaling flexibility and openness are key Metro prerequisites Compactness Limited availability of space Low first-in cost Growing with demand Simplicity Operational efficiency Open design Upgradeable for the future
- 10. © 2018 ADVAOptical Networking. All rights reserved.1010 • Low initial cost • Minimum footprint • Simple configuration and cabling • Remote control and automated procedures • Flexgrid-design supporting advanced coherent modulation formats Your benefits The perfect foundation for software-defined networking Next-gen Metro OLS solution elements Ultra-compact 2-degree ROADMs for on- demand local traffic add/drop, and for automated and remote operation Compact in-line amplifiers for DWDM connectivity over long or highly attenuated spans, even in the most space-restrictive environments Multi-degree ROADMs for remote and flexible interconnection of metro aggregation rings with the metro core
- 11. © 2018 ADVAOptical Networking. All rights reserved.1111 © 2018 ADVA Optical Networking. All rights reserved.11 Leveraging coherent modulation terminals
- 12. © 2018 ADVAOptical Networking. All rights reserved.1212 Higher Order Modulation Increasing Constellation at cost of Noise Performance DSP Technology QPSK 8QAM 16QAM 32QAM 64QAM Theoretical performance 12dB
- 13. © 2018 ADVAOptical Networking. All rights reserved.1313 Trading off Reach vs Bandwidth Significant Performance Steps with Standard mQAM Constellations DSP Technology
- 14. © 2018 ADVAOptical Networking. All rights reserved.1414 Optimizing Modulation Higher Modulation requires Higher (O)SNR DSP Technology Linear channel
- 15. © 2018 ADVAOptical Networking. All rights reserved.1515 Coherent modulation is being extended throughout the Metro • Better spectrum utilization • Adaptation to reach requirements • Lower cost-per-bit transport • More simple and cost-effective designs • Continuous innovation Software-defined coherent optics drive efficiency and flexibility Coherent modulation benefits
- 16. © 2018 ADVAOptical Networking. All rights reserved.1616 Unprecedented Network Flexibility Software Defined Transmission Configure constellation & baud rate for selected data rate • 100-600G • Multiple basic modulation formats per data rate • Fine granular optimization by symbol interleaving Optimize channel based on receive OSNR & spectral shaping due to ROADMs and filters Maximum capacity and reach for any network
- 17. © 2018 ADVAOptical Networking. All rights reserved.1717 Unprecedented Network Flexibility Software Defined Transmission 300G example: • 69GBd SP-16QAM yields longest reach but requires at least 75GHz spacing • 34Gbd 64QAM shows lowest bandwidth but requires 6.3dB better OSNR • Fine granular optimization by chosing base modulation format and grade of interleaving Fine granular adaption to passband and OSNR of the link 75GHz 17.3dB OSNR 37.5GHz 23.6dB OSNR
- 18. © 2018 ADVAOptical Networking. All rights reserved.1818 © 2018 ADVA Optical Networking. All rights reserved.18 Dissagregation today
- 19. © 2018 ADVAOptical Networking. All rights reserved.1919 Disaggregation – Operator Concepts & Vision [U. Hölzle, Plenary Talk, OFC 2017 ] https://www.youtube.com/watch?v=n9zEiGyvJ-A [M. Filer et al., JOCN,, Vol. 8, No. 7, 2016] https://0201.nccdn.net/1_2/000/000/098/a85/Open-ROADM-whitepaper-v1-0.pdf
- 20. © 2018 ADVAOptical Networking. All rights reserved.2020 Disaggregation challenges • Optical network consists of many in-homogeneous network elements • Amplifier, WSS, Wavelength Blocker, • ROADMs can have very different levels of flexibility and internal constraints • Colorless, direction-less, contentionless add drop, … • Especially in cost-sensitive metro network environments constrained technologies are often used (filterless / fixed filters ROADMs, non-colorless, …) • Data models must be abstract to allow future technology advances • Number of data models should be limited to allow interoperability testing
- 21. © 2018 ADVAOptical Networking. All rights reserved.2121 ONF ODTN (01/2018 – 12/2018) https://wiki.onosproject.org/display/ODTN/ODTN 21 OLS Controller WSS TRN OpenConfig Open Line System (OLS) OpenConfig OpenConfi gMUX WSSAMP MUXTRN ONOS Without OLS Controller WSS TRN OpenConfig Open Line System (OLS) OpenConfig OpenConfi gMUX WSSAMP MUXTRN ONOS With OLS Controller TAPI? OpenConfig? Else? TAPI Has topology? TAPI Short Term Feasible Architecture System Architecture
- 22. © 2018 ADVAOptical Networking. All rights reserved.2222 MetroHaul Software Architecture https://metro-haul.eu • Filterless Metro Network Architecture • Hierarchical SDN control • ONF Transport API for Open Line System via SDN DC • OpenConfig (direct SBI or via Agent) for Transponders
- 23. © 2018 ADVAOptical Networking. All rights reserved.2323 SENDATE Multivendor optical SDN Trial (09/2018) Open Disaggregated SDN Control Architecture • Multivendor trial including Network orchestration layer, Control and management layer and Infrastructure layer. • Layered approach based on ONF Transport API 2.0 with extensions for Optical Performance Planning Network Orchestration layer components include: • Transport Orchestrator (Highstreet technologies) • Planning Application (VPIphotonics) (Bundled in Transport Orchestrator) Control and Management layer: • SDN Domain Controllers (ADVA and Coriant) Infrastructure layer: • ROADMs and transponders (ADVA and Coriant) • Transparent OMS back-to-back ROADM interconnect • Alien wavelength interconnection passing both vendors optical domains.
- 24. © 2018 ADVAOptical Networking. All rights reserved.2424 New “open line systems” are driving disaggregation solutions into the market • Ability to combine best-in-class optical line system with best-in-class terminals Next-gen ROADM strategy can deliver: • Compactness, Low first in cost, Simplicity, Future proof design New coherent modulation technology enabling low cost metro transport • Highly flexible modulation formats enable capacity-reach optimization Multiple industry approaches to management of disaggregated networks • One size does not fit all • Continued drive for multi-domain (vendor and layer) solutions now resulting in mature solutions • Multiple trials / demonstrations performed recently achieving production network quality New technologies are driving metro networks towards smart high-capacity solutions Summary
- 25. Thank you IMPORTANT NOTICE ADVAOptical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking. nrobinson@advaoptical.com