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Evolution of high-speed interfaces
in disaggregated open networks
Stephan Neidlinger
Netnod, Stockholm, March 15, 2018
© 2018 ADVA Optical Networking. All rights reserved.22
Outline
Disaggregated networks
High-speed interfaces and modulation formats
Multi-layer/-vendor orchestration/management
1
2
3
© 2018 ADVA Optical Networking. All rights reserved.33
Aggregated and disaggregated networksAggregated
Fully aggregated: Entire transport network acts as a single managed system
End to End System
API
FSP Network
Hypervisor
Transponder TransponderTerminal ILA ROADM Terminal
Fully disaggregated: Everything is a separate network element
Partly disaggregated: Transponder is one element, open line system (OLS) is second
Degrees
Open Line System
Disaggregated
APIAPI API
APIAPIAPI API API API
IETF TEAS TE topology
ONF transport-API
AT&T
Google
ONF Core Model
ONF Core Model
© 2018 ADVA Optical Networking. All rights reserved.44
Investment and depreciation
Value
Optical
line system
Fiber
Depreciation
3 years+
Depreciation
10 years+
Transponder
Disaggregation flexibility: Different lifecycles for line systems and terminals
© 2018 ADVA Optical Networking. All rights reserved.55
Modulation format comparison
Fiber capacity
Size, power and cost
Applications
Evolution
Coherent
detection
Direct
detection
Local oscillator (laser) at receiver, for optical phase
detection. Higher order modulation.
No local oscillator (laser) at the receiver.
Higher-order modulation.
I
Q
Maximum spectral efficiency Reduced spectral efficiency
Complex Tx/Rx, high speed ASICs and DSPs Simpler, lower cost, lower power
Higher order QAM modulation More carriers, low-cost modulation formats
Regional and long distance Shorter reach point-to-point metro
© 2018 ADVA Optical Networking. All rights reserved.66
Unprecedented network flexibility
Coherent detection
Configure constellation and
baud rate for selected data
rate
• 100-600Gbit/s
• 50Gbit/s steps
Optimize for given channel
• Based on receive OSNR
and spectral shaping due
to ROADM cascades
© 2018 ADVA Optical Networking. All rights reserved.77
Coherent evolution
200G: 2016
100G: 2011 2014 2016/17
400G: 2018 2019/20
5x7 MSA module CFP-DCO CFP2-A/DCO OSFP
© 2018 ADVA Optical Networking. All rights reserved.88
Modulation format comparison
Fiber capacity
Size, power and cost
Applications
Evolution
Coherent
detection
Direct
detection
Local oscillator (laser) at receiver, for optical phase
detection. Higher order modulation.
No local oscillator (laser) at the receiver.
Higher order-modulation.
I
Q
Maximum spectral efficiency Reduced spectral efficiency
Complex Tx/Rx, high speed ASICs and DSPs Simpler, lower cost, lower power
Higher-order QAM modulation More carriers, low-cost modulation formats
Regional and long distance Shorter reach point-to-point metro
© 2018 ADVA Optical Networking. All rights reserved.99
• QSFP28 DWDM (non-tunable) pluggable optics (directly into switch/router)
• Dual-wavelength 2x 56Gbit/s PAM4 (non-tunable)
• Up to 4Tbit/s capacity in C-band
• Low power solution: ~4.5W
Direct detect pluggable
Direct detection
100GHz channel spacing 100GHz channel spacing
Each channel, made up of two wavelengths,
is centered on the ITU-T 100GHz channel grid
- One wavelength is offset from the
grid center frequency by -25GHz
- The other wavelength is offset by +25GHz
 100G of capacity in 100GHz of bandwidth
© 2018 ADVA Optical Networking. All rights reserved.1010
OFC 2017 direct detect demo
© 2018 ADVA Optical Networking. All rights reserved.1111
Multi-layer/-vendor orchestration/management
Optical layer
Open line system
APIAPI API
Packet layer
API API
SDN control
Orchestrator
Routers/switches
API API
Verticaldisaggregation
Horizontal disaggregation
© 2018 ADVA Optical Networking. All rights reserved.1212
© 2018 ADVA Optical Networking. All rights reserved.1313
© 2018 ADVA Optical Networking. All rights reserved.1414
Control layer
Transport SDN architecture
Application
layer
NBI / APIs
Cloud orchestrator
Network
orchestrator
StorageCompute
Parent
controller
Domain
controller
Domain
controller
Domain
controller
Infrastructure layer
SBI
Domain 1 Domain 2 Domain 3
NE NE NE NE NE NE NE NE NE
• Diverse applications
• Planning, optimization, services,
etc.
• Common framework
• Multi‐vendor NW SW
• Routing, resiliency
• Standard, programmatic
interfaces across layers
• Open/common device data
models
Common APIs
Standard
interfaces
Open platform
© 2018 ADVA Optical Networking. All rights reserved.1515
YANG data models – 'Pick and Choose'
Transport-API
Device Core model
IA
Infrastructure
Network
Services
IETF network
IETF network-
topology
IETF TE topology
IETF WSON
technology
IETF flexi-grid TED
IETF flexi-grid
media channel
IETF TE tunnels
Common
Optical
transport
Telemetry
SDO
Device
Network
Services
Topology
Path
computation
Virtualnetwork
Notification
Connectivity
Carrier ISPs, IP over Optical Web 2.0 Disaggregation
© 2018 ADVA Optical Networking. All rights reserved.1616
Key takeaways
• Disaggregation will increase network flexibility and
reduce vendor dependency
• Partial disaggregation will reduce network operator
integration efforts
• High-speed interfaces and higher-order modulation
need to be supported by open optical line systems
(wavelength grid, optical impairment compensation,
…)
• Multi-layer and -vendor orchestration/management is
key for real network deployments
Thank you
IMPORTANT NOTICE
The content of this presentation is strictly confidential. ADVA Optical 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.
sneidlinger@advaoptical.com
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Evolution of high-speed interfaces in disaggregated open networks

  • 1. Evolution of high-speed interfaces in disaggregated open networks Stephan Neidlinger Netnod, Stockholm, March 15, 2018
  • 2. © 2018 ADVA Optical Networking. All rights reserved.22 Outline Disaggregated networks High-speed interfaces and modulation formats Multi-layer/-vendor orchestration/management 1 2 3
  • 3. © 2018 ADVA Optical Networking. All rights reserved.33 Aggregated and disaggregated networksAggregated Fully aggregated: Entire transport network acts as a single managed system End to End System API FSP Network Hypervisor Transponder TransponderTerminal ILA ROADM Terminal Fully disaggregated: Everything is a separate network element Partly disaggregated: Transponder is one element, open line system (OLS) is second Degrees Open Line System Disaggregated APIAPI API APIAPIAPI API API API IETF TEAS TE topology ONF transport-API AT&T Google ONF Core Model ONF Core Model
  • 4. © 2018 ADVA Optical Networking. All rights reserved.44 Investment and depreciation Value Optical line system Fiber Depreciation 3 years+ Depreciation 10 years+ Transponder Disaggregation flexibility: Different lifecycles for line systems and terminals
  • 5. © 2018 ADVA Optical Networking. All rights reserved.55 Modulation format comparison Fiber capacity Size, power and cost Applications Evolution Coherent detection Direct detection Local oscillator (laser) at receiver, for optical phase detection. Higher order modulation. No local oscillator (laser) at the receiver. Higher-order modulation. I Q Maximum spectral efficiency Reduced spectral efficiency Complex Tx/Rx, high speed ASICs and DSPs Simpler, lower cost, lower power Higher order QAM modulation More carriers, low-cost modulation formats Regional and long distance Shorter reach point-to-point metro
  • 6. © 2018 ADVA Optical Networking. All rights reserved.66 Unprecedented network flexibility Coherent detection Configure constellation and baud rate for selected data rate • 100-600Gbit/s • 50Gbit/s steps Optimize for given channel • Based on receive OSNR and spectral shaping due to ROADM cascades
  • 7. © 2018 ADVA Optical Networking. All rights reserved.77 Coherent evolution 200G: 2016 100G: 2011 2014 2016/17 400G: 2018 2019/20 5x7 MSA module CFP-DCO CFP2-A/DCO OSFP
  • 8. © 2018 ADVA Optical Networking. All rights reserved.88 Modulation format comparison Fiber capacity Size, power and cost Applications Evolution Coherent detection Direct detection Local oscillator (laser) at receiver, for optical phase detection. Higher order modulation. No local oscillator (laser) at the receiver. Higher order-modulation. I Q Maximum spectral efficiency Reduced spectral efficiency Complex Tx/Rx, high speed ASICs and DSPs Simpler, lower cost, lower power Higher-order QAM modulation More carriers, low-cost modulation formats Regional and long distance Shorter reach point-to-point metro
  • 9. © 2018 ADVA Optical Networking. All rights reserved.99 • QSFP28 DWDM (non-tunable) pluggable optics (directly into switch/router) • Dual-wavelength 2x 56Gbit/s PAM4 (non-tunable) • Up to 4Tbit/s capacity in C-band • Low power solution: ~4.5W Direct detect pluggable Direct detection 100GHz channel spacing 100GHz channel spacing Each channel, made up of two wavelengths, is centered on the ITU-T 100GHz channel grid - One wavelength is offset from the grid center frequency by -25GHz - The other wavelength is offset by +25GHz  100G of capacity in 100GHz of bandwidth
  • 10. © 2018 ADVA Optical Networking. All rights reserved.1010 OFC 2017 direct detect demo
  • 11. © 2018 ADVA Optical Networking. All rights reserved.1111 Multi-layer/-vendor orchestration/management Optical layer Open line system APIAPI API Packet layer API API SDN control Orchestrator Routers/switches API API Verticaldisaggregation Horizontal disaggregation
  • 12. © 2018 ADVA Optical Networking. All rights reserved.1212
  • 13. © 2018 ADVA Optical Networking. All rights reserved.1313
  • 14. © 2018 ADVA Optical Networking. All rights reserved.1414 Control layer Transport SDN architecture Application layer NBI / APIs Cloud orchestrator Network orchestrator StorageCompute Parent controller Domain controller Domain controller Domain controller Infrastructure layer SBI Domain 1 Domain 2 Domain 3 NE NE NE NE NE NE NE NE NE • Diverse applications • Planning, optimization, services, etc. • Common framework • Multi‐vendor NW SW • Routing, resiliency • Standard, programmatic interfaces across layers • Open/common device data models Common APIs Standard interfaces Open platform
  • 15. © 2018 ADVA Optical Networking. All rights reserved.1515 YANG data models – 'Pick and Choose' Transport-API Device Core model IA Infrastructure Network Services IETF network IETF network- topology IETF TE topology IETF WSON technology IETF flexi-grid TED IETF flexi-grid media channel IETF TE tunnels Common Optical transport Telemetry SDO Device Network Services Topology Path computation Virtualnetwork Notification Connectivity Carrier ISPs, IP over Optical Web 2.0 Disaggregation
  • 16. © 2018 ADVA Optical Networking. All rights reserved.1616 Key takeaways • Disaggregation will increase network flexibility and reduce vendor dependency • Partial disaggregation will reduce network operator integration efforts • High-speed interfaces and higher-order modulation need to be supported by open optical line systems (wavelength grid, optical impairment compensation, …) • Multi-layer and -vendor orchestration/management is key for real network deployments
  • 17. Thank you IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical 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. [email protected]

Editor's Notes