Multi-Layer IP+Optical Architectures and Evolution Towards ML SDN Platform

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2 Multi-Layer IP+Optical Architectures and Evolution Towards ML SDN Platform BRKSPG-2040 Moustafa Kattan - Distinguished Systems Engineer

3 Agenda Market and Industry Drivers for Architecture Optimization Multi-Layer IP + Optical Building Blocks Multi-Layer Restoration MLR Overview Multi-Layer MLR Use Cases Multi Layer Evolution towards ML SDN Platform 3

4 Market Drivers Bandwidth will continue to grow and become more Dynamic!! Growth Challanges (Cisco VNI) 4Billion Internet Users 52% of world Population Faster Broadband Speeds More Connected Devices 21Billion devices Video continues to dominate 79% of all internet traffic Mobile connectivity 50% of all connections are mobile Industry Trends Network Convergence New Multi-Layer Opportunities Dynamic Service Activation Anywhere, anytime Static to Dynamic Transport Flexible data rates and spectrum Dynamic = Complexity? SW - Simplify, Simplify, Simplify 4

ML Convergence to Provide : Convergence, Dynamic capabilities and Automation ML Controller/Unified SDN Platform GMPLS-UNI Signaling Collect multi-layer network information in

5 ML Convergence to Provide : Convergence, Dynamic capabilities and Automation ML Controller/Unified SDN Platform GMPLS-UNI Signaling Collect multi-layer network information in near real-time (IP, OTN, DWDM) (WSON) NG ROADM Simplify and Optimize the Network using multi-layer information Perform sophisticated analysis under whatif failure scenarios 5

6 Multi Layer Restoration IP+Optical Building Block 6

1 st Step: Network Convergence with IP+Optical IPoDWDM Cisco introduced the concept in 2005 Significant capital savings by eliminating layers of transponders between IP and optical network layers

7 1 st Step: Network Convergence with IP+Optical IPoDWDM Cisco introduced the concept in 2005 Significant capital savings by eliminating layers of transponders between IP and optical network layers Lower total cost of ownership through a simpler architecture with fewer network elements, higher reliability, reduced time for service set up Next generation provisioning and protection capabilities through the integration of IP and optical layer intelligence (Multi-Layer Application) Synergies between layers to optimize and provide better SLA on the services 7

8 Pre FEC Protection Router Bit Errors Pre-FEC Bit Errors Router Bit Errors Pre-FEC Bit Errors Traditional Reactive Protection working route fail over protect route LOF Proactive Protection IP-over-DWDM Router FEC Proactive Protection working route protect route Switch Transponder FEC Limit FEC Limit FEC Protection Trigger Time Time ROADM ROADM 8

9 Virtual Transponder Functional Model TL-1/CORBA EMS Transponder Representation in Info Model Virtual Transponder Representation in Info Model EMS TL-1/CORBA/XML DWDM Main Controller w/ Info Model Database Config Alarm DWDM Main Controller w/ Info Model Database Config Alarm Transponders In Shelves Router with grey interfaces Router Gray Interfaces Traditional Network Comm Inside the NE (IPC) Router with DWDM interfaces IPoDWDM: Can Be Managed w/out Significant Changes 9

10 Cisco Reference IP+Optical Architecture Integrated DWDM in Router Ethernet or OTN Encap Optical Shelf NCS2000 WSON Network OTN Encap over Grey to router Transponder 10G interface NCS4000 OTN Switch Transponder DWDM Multiplexer (part of NCS2000/MSTP network) 10

11 2 nd Step : Maximize Dynamic Network Capabilities Dynamic Services requires Dynamic Network Anytime, Anywhere Service Activation Dynamic Data Rates No more Hierarchies Bandwidth vs. Reach Optimizations How do we meet the goals of a Dynamic Network? More Dynamics = More Complexity How do we Simplify? 11

12 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum

Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move).

13 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific

WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels.

14 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

15 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

16 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

17 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

18 Dynamic Self Healing DWDM Network Complete Control in Software, No Physical Intervention Required Foundation for Multi-Layer Network Programmability Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move). WSON Wavelength Switched Optical Network Flex Spectrum Ability to provision the amount of spectrum allocated to wavelength(s) allowing for 400G and 1T channels. Colorless ROADM ports are not frequency specific (re-tuned laser does not require fiber move). Contention-less - Same frequency can be added/dropped from multiple ports on same device. Tunable Transponder Color and modulation. Ability to derive max b/w based on distance and fiber quality.

NG ROADM: Flex Spectrum 50 GHz ITU Grid Flex Spectrum/Nyquist Shaping Rigid Spacing Wasted Spectrum (Typically 200Ghz from Spectrum) Super-channel with tightly spaced sub-carriers Efficient

19 NG ROADM: Flex Spectrum 50 GHz ITU Grid Flex Spectrum/Nyquist Shaping Rigid Spacing Wasted Spectrum (Typically 200Ghz from Spectrum) Super-channel with tightly spaced sub-carriers Efficient Spectrum Use (150Hz from Spectrum) Graceful growth to Terabit and greater Super-channels; Lighting the way to flexible, dynamic packet to wavelength mapping; Optimize bandwidth vs. distance. 19

20 Dynamic Modulation: Reach vs. Capacity Modulation Baud Rate Line Rate Payload Rate Distance BPSK 28 GBaud 56 Gbps 50 Gbps 10,000 km QPSK 32 GBaud 112 Gbps 100 Gbps 6,800 km 16-QAM 32/35 GBaud 224 Gbps 200/250 Gbps 1,200 km 20

21 400G Modulation Modulation Baud Rate Line Rate Payload Rate ONSR (0.5 RBW) BPSK 28 GBaud 56 Gbps 50 Gbps ~2.5dB QPSK 32 GBaud 128 Gbps 100 Gbps ~5dB 8-QAM 32 GBaud 187 Gbps 150 Gbps ~9dB 16-QAM 32 GBaud 250 Gbps 200 Gbps ~10 db QAM 42 GBaud 504 Gbps 400 Gbps ~18 db Cisco and/or its affiliates. All rights reserved. Cisco Confidential 21

22 400Gbs Applications Superchannel 4x100Gbs QPSK Technology : available Performances : ULH compatible Limited penalty vs 50GHz Superchannel 2x200G 16QAM Technology : available Performances : Metro-Regional demonstrated Single carrier: 16QAM (double baud rate) Technology : demonstrated Performances : Metro/DCI Single carrier: 64QAM Technology : demonstrated Performances : Metro/Acess 22

23 How about Dynamic Rates? Interleaving of different modulation schemes symbols enables continuous optimization of the capacity for every reach. 16-QAM QPSK 16-QAM QPSK 16-QAM time 23

FlexMod Time Domain 32 GBaud BPSK BPSK BPSK BPSK BPSK BPSK BPSK 50G BPSK QPSK BPSK QPSK BPSK QPSK BPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK Mix of constellations in the time domain Variable reach

24 FlexMod Time Domain 32 GBaud BPSK BPSK BPSK BPSK BPSK BPSK BPSK 50G BPSK QPSK BPSK QPSK BPSK QPSK BPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK Mix of constellations in the time domain Variable reach Signal processing needs only small changes 42 GBaud 56 GBaud QPSK QPSK QPSK 16QAM QPSK QPSK QPSK QPSK 16QAM QPSK 16QAM QPSK 16QAM QPSK 16QAM 16QAM QPSK 16QAM 16QAM 16QAM QPSK 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM 64QAM 16QAM 16QAM 16QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 16QAM 16QAM 16QAM 64QAM 16QAM 16QAM 16QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 16QAM 16QAM 16QAM 64QAM 16QAM 16QAM 16QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 16QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 16QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 200G 300G 400G G

25 Dynamic Data Rates FlexMod and Flex Ethernet (FlexE) Ability to leverage the full capacity of the NPU Ability to specify any Data Rate with no Hashing inefficiencies Ability to grow the Data Rate in 25/50G granularity upto max NPU capacity independent of IEEE or ITU hierarchies Ability to dynamically adjust data rates to match the physical layer performance 400Gig NPU X 400Gig 400Gig NPU 50Gig 350Gig 25

26 Automation and Multi-Layer Control Plane Evolution GMPLS-UNI Multi-Layer Signalling WSON Dynamic Optical Layer ML CP Information Sharing Multi-Layer Networking Automation to Optimization Improved Network Economics 26

27 WSON : Agility & Self Healing Capability Wavelength Switched Optical Networks (WSON) Impairment-aware Optical Control Plane Restoration Mechanism(1m) and Requires Protection Mechanism for of the time Automatic Network Configuration/Restoration Improve Network SLA/Availability : 1+R and 1+1+R Network failure reaction (1min) Resiliency and Self Healing Against Multiple Fiber Cuts 27

28 Impairment Aware WSON Foundation for Multi-layer Information Exchange Linear impairments Power Loss Embedded Optical Layer Intelligence Chromatic Dispersion (CD) Optical Signal to Noise Ratio (OSNR) Topology Lambda assignment Route choices (C-SPF) Non linear Optical impairments: Self-Phase Modulation (SPM) Cross-Phase Modulation (XPM) Four-Wave Mixing (FWM) Polarisation Mode Dispersion (PMD) Interface Characteristics Bit rate FEC Modulation format Regeneration Capability LSP Priority 28

29 GMPLS UNI Signaling IPoDWDM Router GMPLS UNI UNI-C UNI-N DWDM Transport Network MSTP Control Plane Data Plane 29

30 Cisco Example: Multi-Layer Control Plane Sharing of Relevant information: Server to Client Latency SRLG Circuit ID Path Cost Common Interest points Preserve boundaries ML Restoration saving Protect against Multiple Failures Reduced Operation cycles Client to Server Matching Circuit Disjoint Circuit LSP Priority Restoration requirements Latency Bound Seatle Prinevile Newark Reno Elk (corp) SanJose LA Cup (corp) Seatle Client CorpPE DCPE P PeringPE Server 25 Spans 17 Spans 2421Km 1485Km SanJose 22 Spans 2090Km 6 Spans 682Km LA 30 Spans 2608Km Red Lines = Assumed Fiber Black Lines = Real Fiber Sample St Paul Boston Chicago NewYork Denver Ashburn Maiden Atlanta Dalas Orlando Client Miami nlight CP 22 Spans Chicago 1852Km NewYork 22 Spans Denver 2097Km 5 Spans 460Km Ashburn 19 Spans 15 Spans 1780Km 1310Km 13 Spans 1227Km 13 Spans 1235Km Atlanta 9 Spans 772Km Dalas 25 Spans Orlando 2159Km Client: IP layer Server Server: DWDM layer 30

31 Putting it Together: IP Protects and DWDM Restores! 1+1+R Enhanced Protection for Critical Circuits

32 Putting it Together: IP Protects and DWDM Restores! 1+1+R Enhanced Protection for Critical Circuits

33 Putting it Together: IP Protects and DWDM Restores! 1+1+R Enhanced Protection for Critical Circuits Pre-FEC Protection <15ms 31

34 Putting it Together: IP Protects and DWDM Restores! Oversubscription 1+1+R Enhanced Protection for Critical Circuits Dangling Resource 31

35 Putting it Together: IP Protects and DWDM Restores! WSON Restoration(~1 minute) 1+1+R Enhanced Protection for Critical Circuits 31

36 Putting it Together: IP Protects and DWDM Restores! WSON Restoration(~1 minute) 1+1+R Enhanced Protection for Critical Circuits Omni-Directional Add/Drop 31

37 Putting it Together: IP Protects and DWDM Restores! WSON Restoration(~1 minute) 1+1+R Enhanced Protection for Critical Circuits Colorless Add/Drop 31

38 Months to Minutes How do we get there? IP Manual data collection, analysis and circuit request Provisioning Process Transport Offline transport analysis and manual provisioning WAN Automation Engine MATE Design. MATE Live. WSON SSON Layer Optimization nlight Multi-Layer Control Plane Multi-Layer Optimization? What s Next? Dynamic Online Multi-Layer Optimization

39 Multi Layer Restoration (MLR) Overview 39

40 Multi-Layer Control Plane Evolution ML CP Information Sharing GMPLS-UNI Multi-Layer Signalling WSON Dynamic Optical Layer Multi-Layer Networking Automation to Optimization Improved Network Economics 40

41 Multi Layer Restoration (MLR) Optimise both the IP and the Optical layers as a single entity Three main MLR Components: MLBO: ML Bypass Optimization MLR-O: to deal with optical layer failures MLR-P: to deal with IP port (or transponder) 41

42 Multi-Layer Restoration Many Possibilities MLR-Optical MLR-Aggregation no IP topology changes spare port, different router MLR-Port MLR-Core spare port, same router spare router 42

43 MLR-O for Fiber Failures When a fiber fails, all links traversing that fiber fail, but the interfaces are still good. DWDM Layer is abstracted as its Agile, Colorless, Omni-directional ROADMs can route the wavelength around the failure and provides ANY to ANY wavelength connectivity. Router Interfaces could be IPoDWDM or IP+DWDM to leverage Pre-FEC protection capabilities. 260G 70G 130G Good Interface Failed Links (fiber cut) Good Interface 43

44 All Single Fiber Failures without MLR-O Fail fiber spans one at a time (in this example, the top one) Typical causes: fiber cut, amp failure, human error Assume traffic is protected at the IP layer, therefore extra capacity is needed. This (usually) means extra interfaces. redundant interfaces 260G + 180G 180G + 130G 70G + 180G 44

millisecond Premium traffic can be prioritized to use available bandwidth Congestion may occur for

45 MLR-O for Fiber Failures First Step Pre FEC Protection Fiber failure causes traffic to re-route at L3 using available capacity Using Pre-FEC proactive protection, traffic can switch in less than 1 millisecond Premium traffic can be prioritized to use available bandwidth Congestion may occur for low priority traffic for seconds (typically sec) 260G Possible congestion (20 sec) 70G 130G 45

46 MLR-O for Fiber Failures Second Step Optical Restoration MLR, in conjunction with WSON, will restore the failed wavelengths in a few seconds (20 sec). The same interfaces are used, so no extra interfaces are required. Congestion for low priority traffic disappears 46

47 MLR-Port Failure One spare interface per router can protect against failure of any interface on either connected span 180G 260G 70G 130G 47

48 MLR-P: ML Restoration with Port Failure Interface failure brings down one link. nlight ROADM re-routes link to spare interface, using same optical path and same far end interface. 180G 260G 70G 130G 48

49 Result: PMO vs MLR-O + MLR-P 180G 260G 70G 130G 38 total interfaces 47% savings over IP only protection. 20 total interfaces 49

50 Multi-Layer MLR Use Cases 50

51 Use Case : Large EMEAR SP MLR-O to Improve Efficency and Network Utilization Optical Infrastructure: Mesh Colorless Omni FS DWDM Coherent Network WSON based Control Plane GMPLS-UNI Signaling Enabled Any to Any without Regeneration required for up to 2000 Kms range. 51

52 Use Case 2: Present Mode of Operation All nodes are dual homed, current threshold is 50% During fiber cuts, traffic is protected on IP Layer protection is less than 50 msec. No congestion at all due to the high cost policy of allowing only 50% max utilization per link. 50% 50% Back to normal after restoring the link (Could take days or weeks) 52

53 Use Case 2: With MLR-O Optimization New utilization is 80% Fiber cut, traffic is dynamically protected (Pre-FEC proactive protection (typically sub 1 msec)! High Priority traffic is not impacted ( since HPT < 20% per link). LPT can afford congestion for 5-30 seconds (Restoration time). IP+Optical Double utilization 80% 80% Back to normal, IP+Optical auto-restoration will find different optical path in seconds 53

Total BW cost (Unit Price) Use Case 2: MLR-O CapEx/OpEx Optimization CapEx & OpEx savings: Total bandwidth cost is calculated by summing up all related

= Total cost / 50% utilization (MAX) With IP+Optical, the utilization can go up to 80% without any service degradation 30% Y over Y growth New Total BW

54 Total BW cost (Unit Price) Use Case 2: MLR-O CapEx/OpEx Optimization CapEx & OpEx savings: Total bandwidth cost is calculated by summing up all related costs and then divided by utilization (Number of bits) Related Cost: IP router ports Transponder ports Wavelengths Power Chassis Today s Total BW cost = Total cost / 50% utilization (MAX) With IP+Optical, the utilization can go up to 80% without any service degradation 30% Y over Y growth New Total BW cost = Total cost / 80% utilization % Savings 0 Y1 Y2 Y3 Y4 Y5 IP+Optical As of Today

Multi-Layer Optimization & Restoration Real World Examples, Tangible CapEx Savings Multi-layer capacity planning model for IP Networks over optical transport, including: Router port bypass with ROADM

55 Multi-Layer Optimization & Restoration Real World Examples, Tangible CapEx Savings Multi-layer capacity planning model for IP Networks over optical transport, including: Router port bypass with ROADM Multi-layer restoration via common IP + Optical control plane (nlight) Route optimization using Cisco MATE tool Real-world CapEx modeling for multi-layer capacity in partnership with DT & Telefonica Joint white paper submitted to IEEE Communications magazine Result: up to 60% CapEx savings over 5 years for IP + Optical multi-layer restoration Savings based on eliminating IP router ports, transponder ports, wavelengths, power, chassis Multi-Layer Capacity Planning for IP-Optical Networks - IEEE Communications Magazine, January

56 Evolution Towards a Multi Layer Transport SDN 56

57 Path Towards SDN In its simplest form SDN calls for separation of control plane from data plane while centralizing the control plane. Applications will drive the network behavior in the SDN Architecture Ideally a Multi Layer Hybrid & Vendor Agnostic SDN Architecture 57

SDN Architecture - Applications Multiple Applications being developed and investigated Applications shall operate over Cisco and Third Party controller

58 SDN Architecture - Applications Multiple Applications being developed and investigated Applications shall operate over Cisco and Third Party controller Focus not simply on single layer but Multi Layer Initial Application will provide for ML: ML Visualization ML Service Activation ML Optimization ML Restoration 58

The Cisco Unified ML Architecture The Cisco ML Hybrid SDN Architecture should consist of Three key layers: Application Layer Cisco or 3 rd Party SW apps Controller Layer Unified ML Controller, layer

59 The Cisco Unified ML Architecture The Cisco ML Hybrid SDN Architecture should consist of Three key layers: Application Layer Cisco or 3 rd Party SW apps Controller Layer Unified ML Controller, layer agnostic Network Elements IP, OTN and DWDM elements. Cisco Architecture shall leverage: Centralized Controller for Optimizations and Activation Distributed Controller for fast reaction to local events GMPLS-UNI is key here to exchange info 59

layer to the central algorithm The central cross-layer optimization algorithm is part of the ML

60 Cross Layer Path Computation Cross Layer Path Computation Execution : The brain for optimizing each layer is modularized as plug n play and feeds feasibility and weight correlation of each layer to the central algorithm The central cross-layer optimization algorithm is part of the ML engine which optimizes all layers to provide the least number of interfaces respecting all layer SLAs 60

61 MLMV Platform Customer Use Case SDN Architecture Looking for True Multi Vendor From experience feel Open Source needed Believe in Single ML controller Plugin Based Orchestration needed for cross domain 61

62 MLMV Platform Customer Use Case SDN Architecture Orchestrator Looking for True Multi Vendor From experience feel Open Source needed Believe in Single ML controller Plugin Based Orchestration needed for cross domain Controller of Controllers Controller Controller Controller Controller 62

63 MLMV Platform Customer Use Case SDN Architecture Orchestrator Looking for True Multi Vendor From experience feel Open Source needed Believe in Single ML controller Plugin Based Orchestration needed for cross domain OpenSourced Controller Controller of Controllers Controller 63

64 MLMV Platform Customer Use Case SDN Architecture Looking for True Multi Vendor From experience feel Open Source needed Believe in Single ML controller Plugin Based Orchestration needed for cross domain APIs Application Space (Cisco / 3 rd Party) Orchestrator NB RESTful APIs to Applications Unified Multi-Layer Platform OpenSourced Modeling Controller Controller of Controllers (What-if) Controller Cariden (WAE) API Collection / Deployer / Services / Abstraction OSC (ODL) API Southbound Plug-in to NEs RFS Orchestrator (Cisco Tail F NCS) Collector / Deployer (Non - ODL NE) Tail-F Device Manager 64

Network provides WSON based restoration IP + Optical MLR-O is initiated L3 Protects BW.

65 Example 1: Restoration Optical Failure Fail a Span (MLR-0) As span begins to fail, Events, TCA, Alarms are raised by the NE Controller captures and stores the events Notifies these to the applications Applications will update the state Optical Only Network provides WSON based restoration IP + Optical MLR-O is initiated L3 Protects BW. Controller detects failure and calculate new optical path New ML Optical path is provisioned BW is restored to Network Restored topology presented to Application as Restored State 65

state MLR-P is initiated Centralized CP L3 Protects with FRR etc.

66 Example 2: Restoration Port failure Port Failure on a Router or OTN Port (MLR-P As Port fails, Events, TCA, Alarms are raised by the NE Controller captures and stores the events Notifies these to the applications Applications will update the state MLR-P is initiated Centralized CP L3 Protects with FRR etc. Controller finds the alternate port Ties the original wavelength to new Port Provisions new ML Path BW is restored to Network Restored topology presented to app as Restored State 66

67 Summary It is all about Convergence! ML Controller/Unified SDN Platform Network Agility Dynamic Capabilities CO FlexSpect, FlexE, FlexMOD. Simplification is MUST Automation is Key WSON, ML GMPLS-UNI, pre FEC Protect Multilayer is a MUST Sharing relevant information across layers - nlight, SDN GMPLS-UNI Signaling Major Business Benefits are there 40%+ interface saving reduction in Capex and Opex nlight ML Control Plane (WSON) nlight ROADM 67

68 Call to Action BRKOPT-2118: Multi-Layer Network Architectures, Emerson Moura 68

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70 Thank you 70

Cisco PONC Walid Wakim Principal Engineer. March 10, 2015

Cisco PONC Walid Wakim Principal Engineer. March 10, 2015 Cisco PONC 2015 Walid Wakim Principal Engineer March 10, 2015 Transport SDN 2013-2014 Cisco and/or its affiliates. All rights reserved. 2 Network Objectives Today Network Planning performed in silos Network