Disaggregation, automation and autonomy in optical networking
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The document discusses advancements in disaggregation, automation, and autonomy in optical networking, highlighting the shift from proprietary hardware to open, disaggregated elements. It emphasizes the importance of interoperability and the transition towards autonomic networking as a key industry goal. Additionally, it outlines practical examples and future challenges in implementing these technologies within metro networks and data center connectivity.
![© 2018 ADVA Optical Networking. All rights reserved.1111
Disaggregation – operator concepts and 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/181130-nysernetconference-thepathtonetworkautomationanddisaggregation-181206150600/85/Disaggregation-automation-and-autonomy-in-optical-networking-11-320.jpg)
Disaggregation, automation and autonomy in optical networking
- 1. Disaggregation, automation and autonomy in optical networking Niall Robinson VP, global business development Disaggregation
- 2. © 2018 ADVA Optical Networking. All rights reserved.22 Charting the path to network automation and disaggregation: Carrier SDN survey analysis Heavy Reading, Carrier SDN Survey Analysis, Feb. 2018 http://img.lightreading.com/heavyreading/hr20180207_esum.pdf
- 3. © 2018 ADVA Optical Networking. All rights reserved.33 Disaggregation – vertical direction Proprietary hardware Proprietary HW abstraction Proprietary software Proprietary interfaces • Vendor lock-in • Complexity • Compromises Closed element White box hardware Open HW abstraction • Open and simple • Best in breed • Extensible Open APIs ONIE installation capability Open software From old style To new style Disaggregated element
- 4. © 2018 ADVA Optical Networking. All rights reserved.44 Disaggregation – vertical direction Proprietary hardware Proprietary HW abstraction Proprietary software Proprietary interfaces • Vendor lock-in • Complexity • Compromises Closed element From old style To new style Voyager – an industry first Facebook – donated design to TIP Cumulus – the open network operating system Celestica – the hardware provider Broadcom – the ASIC chip provider Acacia – the optics provider ADVA – the management/solution vendor
- 5. © 2018 ADVA Optical Networking. All rights reserved.55 A bit of history … 2015 20172011 2013 2016 2018 • Open Compute Project initiated • Focus on servers • OCP expands to cover switches • Early discussions on white box network hardware • Telecom Infra Project initiated • First project specifications / design contributed • Multiple TIP projects driving specifications • Expect first deployments of TIP hardware
- 6. © 2018 ADVA Optical Networking. All rights reserved.66 Driving open source, open architecture across whole IT infrastructure OCP and TIP Similarities and differences Server Switch Storage Access Backhaul Core Data center Telco network
- 7. © 2018 ADVA Optical Networking. All rights reserved.77 Voyager – packet optical solution Announced at TIP Summit 2016 Redundant removable fans and power supplies 2.0Tb/s I/O capacity • 12x QSFP28 open client ports (10G, 40G, 100G service support) • 4x 100G/150G/200G configurable coherent network ports Tomahawk switch • Layer 2 / Layer 3 LINUX NOS • BGP, EVPN, VxLAN, … Voyager is Facebook’s open optical packet transport box The hardware design has been submitted to TIP, the Telecom Infra Project making this available to all Voyager is a 1RU pizza box packet-optical solution • It has Layer 2 forwarding engine and Layer 3 routing capabilities ADVA will supply Voyager hardware and software – either: • As a standalone entity for integration into disaggregated networks • Integrated with ADVA open optical layer and management system • Both options will be integrated into ADVA commercial and service offerings Voyager A disaggregation transport solution procured through ADVA
- 8. © 2018 ADVA Optical Networking. All rights reserved.88 Cumulus Linux Fully featured switching and routing capabilities • IPv4/v6 routing via FRRouting • OSPFv2, OSPFv3, BGPv4/v6 • Virtual routing and forwarding (VRF) and VRF route Leaking • BGP, OSPF • Equal-cost multi-path (ECMP) • Bidirectional forwarding detection (BFD) • Protocol-independent multicast (PIM, PIM-SM, PIM- SSM) • Segment routing • Policy-based routing Layer 2 features • Ethernet bridging: VLANs / VLAN trunks (IEEE 802.1q) • LACP (IEEE 802.3ad), unicast/broadcast storm control, LLDP • Spanning tree • STP (IEEE 802.1d), RSTP (IEEE 802.1w), PVRST, PVST • MLAG (multi-chassis link aggregation) • IGMPv2/v3 / MLDv1/v2 snooping • Virtual router redundancy Layer 3 features • EVPN • VXLAN support • VXLAN routing – symmetric and asymmetric Network virtualization • Syslog • SNMP monitoring • Buffer monitoring • Simplified support via cl- support output Network operations • Docker on Cumulus Linux • OpenStack Neutron ML2 and Cumulus Linux • RDMA over converged Ethernet (RoCE) Other solutions
- 9. © 2018 ADVA Optical Networking. All rights reserved.99 Disaggregation – horizontal directionAggregated Fully aggregated: Entire transport network acts as a single managed system End-to-end system API 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 OpenROADM Google OpenConfig ONF core model ONF core model
- 10. © 2018 ADVA Optical Networking. All rights reserved.1010 Challenges • Optical network consists of many inhomogeneous network elements • Amplifier, WSS, wavelength blocker, … • ROADMs can have very different levels of flexibility and internal constraints • Colorless, directionless, contentionless add drop, … • Especially in cost-sensitive metro network environments constrained technologies are often used (filterless / fixed filter ROADMs, non-colorless, …) • Data models must be abstract to allow future technology advances • Number of data models should be limited to allow interoperability testing
- 11. © 2018 ADVA Optical Networking. All rights reserved.1111 Disaggregation – operator concepts and 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
- 12. © 2018 ADVA Optical Networking. All rights reserved.1212 ONF ODTN (01/2018-12/2018) https://wiki.onosproject.org/display/ODTN/ODTN 12 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
- 13. © 2018 ADVA Optical Networking. All rights reserved.1313 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
- 14. © 2018 ADVA Optical Networking. All rights reserved.1414 SENDATE multivendor optical SDN trial (09/2018) Open disaggregated SDN control architecture • Multi-vendor 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
- 15. © 2018 ADVA Optical Networking. All rights reserved.1515 Rearchitected network control … towards autonomy Packets Legacy network management OSS/BSS Vendor API Infrastructure appliances Network operating system Multi-technology SDN domain controller Service lifecycle management, multi-domain orchestration, intelligent operation TelemetryOpen device API Open network API Machine learning, artificial intelligence White boxes Optical Network elements
- 16. © 2018 ADVA Optical Networking. All rights reserved.1616 AI business value expectations (suppliers) Network optimization Fraud detection and security Personalization Predicting congestion ChatbotsSituation-aware assuranceCall center Natural language machine control Source: AI – the time is now; TM Forum, Dec 2017
- 17. © 2018 ADVA Optical Networking. All rights reserved.1717 Reasoning based on observational data can be understood and verified With big data analytics to actionable insights Observational data, knowledge base • Closest match, nearest neighbor, heuristics • Considers policies
- 18. © 2018 ADVA Optical Networking. All rights reserved.1818 AI algorithm as black box with hidden layers makes verification much more difficult Deep learningTraining Problem to solve … … Deep learning neural network “Instinctive control, cognitive networking”: decoupling of data base from output Observational data, knowledge base
- 19. © 2018 ADVA Optical Networking. All rights reserved.1919 Automation Autonomous operation Simplicity Open programmability, hierarchical abstraction, telemetry streaming Verifiability From rule-based analytics to deep learning with trusted data Security Protecting any NFVI resource, trustworthy network data It starts with making the network “autonomable” Extending comfort zone while moving to automation Manual operation
- 20. © 2018 ADVA Optical Networking. All rights reserved.2020 Bill Gates: “The first rule of any technology used in a business is that automation applied to an efficient operation will magnify the efficiency. The second is that automation applied to an inefficient operation will magnify the inefficiency.” First step to automation: Make operations efficient First rule for implementing automation
- 21. © 2018 ADVA Optical Networking. All rights reserved.2121 Automated service activation based on standard components Automated service provisioning with secure ZTP Automated configuration 1. Device connects to bootstrap server and authenticates itself and the bootstrap server 2. Device uploads the boot-image and configuration scripts and verifies integrity and authenticity 3. Device installs and executes boot image and scripts Service provider (owner) network management Bootstrapping server
- 22. © 2018 ADVA Optical Networking. All rights reserved.2222 Prediction of OSNR with ~0.04dB mean accuracy AI/ML example: capacity optimization MAE 0.039 dB Max error (+) +0.57 dB Max error (-) -0.57 dB Split entire dataset Build ML model using train/validate Get test data, and remove true OSNR values Apply ML model (get predicted OSNR values) Compare true OSNR vs. predicted OSNR o Neural networks o 9 input features, 1 output feature (OSNR) o 2 hidden layers (120x100 neurons) o ReLu activation function
- 23. © 2018 ADVA Optical Networking. All rights reserved.2323 Improving availability and faster repair cycles by predicting device outages AI/ML example: predictive maintenance Colored lines detected by ML (Jan 6th) Precise prediction verified 9/JAN. 16/JAN.
- 24. © 2018 ADVA Optical Networking. All rights reserved.2424 Open SDN network control Making the move to autonomous networking ZTP automated provisioning Intelligent maintenance Intelligent planning Intelligent security … towards problem-specific “narrow” autonomy Gainingconfidence Intelligent …….
- 25. © 2018 ADVA Optical Networking. All rights reserved.2525 NYSERNET disaggregation field trial Supporting system and network element disaggregation Voyager over ADVA OLS directly connected to Ciena OLS as alien wave • ADVA 9ROADM-RS client port to Ciena CMD filter connectivity Voyager/ADVA FSP3000 QuadFlex interop • QuadFlex acting as OTU4 OEO regen • Currently with two cards, but it also works on a single card and works at 200G • Also shows QuadFlex over Ciena as an alien wave Voyager and QuadFlex over Cisco OLS as alien waves Voyager Voyager
- 26. © 2018 ADVA Optical Networking. All rights reserved.2626 Summary 1st examples of disaggregated networking elements entering the market Partial disaggregation and OLS with per-device data monitoring allows a visibility down to the device level but simplifies operation of the network Recent demonstrations have proven that partial disaggregation is a working approach for metro networks and data center connectivity • Full disaggregation will slow down technological progress and result in more complex (and cost- intensive) network operation High number of evolving data models delay implementation and testing and limit interoperability • Industry (including operators) should decide on one common data model Autonomic networking is now on the horizon
- 27. 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. nrobinson@advaoptical.com Niall Robinson Vice President Global Business Development Phone: +1 972 759 1262 Fax: +1 972 759 1201 Mobile: +1 978 933 1081 nrobinson@advaoptical.com ADVA Optical Networking NA. Inc. 2301 N. Greenville Avenue Suite 300 Richardson, TX 75082 USA www.advaoptical.com