Cisco PONC Diane Patton Technical Leader. 10 March 2015

Transcription

1 Cisco PONC 2015 Diane Patton Technical Leader 10 March 2015

2 The Role of Packets in Converged Networks Cisco and/or its affiliates. All rights reserved. 2

3 Recap from this morning Rob talked about Tier1 SP in the US migrating from SONET/SDH to packet based transport-like infrastructure Ramesh talked about flex-lsp and the benefits it brings to the transport world from the MPLS world You heard Simon talk about WSON and it s capabilities I m going to take you through additional options of convergence and how we can leverage WSON in a IP environment

4 IP/Packet+Optical Integration Traditional approach Packet Node and Transponder managed separately Ships in the night on data plane Allow Control Plane Interaction Packet Node S R Transponder S R ROADM IP+Optical Multilayer interaction Integrated management and monitoring G.709 frame terminates on Packet Node Packet Node ROADM

5 DWDM I/F Multi-Layer Interface Integration Before WDM Interface Integration Lower CapEx Elimination of client optics+fiber Lower OpEx Space, power, management Enhanced Resiliency Fewer active components Packet Node Transponder ROADM Packet Node ROADM Multi-Layer Interaction Proactive Protection Less Packet Latency

6 Cisco nv Optical Satellite Secure Management Channel nv Optical S R S R Packet Node Transponder Shelf ROADM Transponder becomes an extension of the router Power levels, OTN overhead, and alarms available in real-time on the router DWDM interface controlled and monitored by router CLI, or OTN MIB Control Plane Interaction 6

7 IP+Optical Data Plane Integration ASR 9000 CRS-X NCS 6000 NCS 2000 as nv Satellite (ASR 9000, CRS, NCS 6000) Integrated Optics, Reduced TCO by over 40% 400G / slot 2 x 100G/200G CFP2 IPoDWDM 20x10G HD/SD/Staircase FEC Coherent, Tunable Optics 400G / slot 1 x 100G/200G CFP2 IPoDWDM 3 x 100G CPAK Grey HD/SD/Staircase FEC Coherent Tunable Optics 800G / slot 4X100G IPoDWDM/8X100GGrey (TBD) 6 x 100G CPAK Grey HD/SD/Staircase FEC Coherent Tunable Optics

8 Converged Packet/OTN Platform Packet /OTN Great Flexibility with just ONE transport platform! Lower Opex, simplier network Convergence Packet Node TXP ROADM OTN switching over grey or a wavelength Allows for greater Bandwidth usage Less Router ports with bypass Accommodate Circuit Traffic Packet over OTN over DWDM

9 ODU Statistical Multiplexing Private Line Private Line Private Line Private Line SDH GigE 10 GigE E1/E3 POS ODU-2/2e ODU1 ODUFlex ODU-2/2e Under-utilized GigE/10 GigE N x 10 Gig OTN over DWDM ODUj/ ODUk ODUj/ ODUk Under-utilized 100 GigE OTN Only provides no Statistical Multiplexing 100 Gig DWDM Coherent 100 Gig DWDM Coherent Private Line Private Line Private Line Private Line SDH GigE 10 GigE E1/E3 POS Statistical Multiplexing with L2/MPLS Packet Processing L2/ MPLS Tunably Utilized GigE/10 GigE ODU-2/2e ODUj/ODUk N x 10 Gig OTN over DWDM ODUj/ODUk Packet Processing L2/ MPLS ODUj/ ODUk Tunably Utilized 100 GigE 100 Gig DWDM Coherent

10 NCS 4000 Series NCS 4016 Benefits: Packet-OTN- DWDM Optimal footprint Service velocity High lambda utilization Increased resiliency Circuit Emulation over Packet With Flex LSP NCS 4009 NCS Aggregation

11 Proactive Protection

12 Pre-FEC Bit Errors Pre-FEC Bit Errors Router Bit Errors Router Bit Errors Proactive Protection Achievable with or without DWDM interface in Packet Node Traditiona l Reactive Protection working route fail over protect route IP+Optica l Router Proactive Protection Proactive Protection working route protect route LOF/SD FEC Switch Transponder FEC Limit FEC Limit FEC Protection Trigger Time Time ROADM ROADM 12

13 Control Plane Interaction

14 Dynamic Control Plane Depends on a Touchless Optical Layer animated slid Complete Control in Software, No Physical Intervention Required Omni-Directional ROADM ports are not direction specific (re-route does not require fiber move) NCS 2000 Tunable Receiver Coherent receiver can select one wavelength among a composite signal (no demux needed) Tunable Laser Transmit laser can be provisioned to any frequency in the C-band (96 channels) Embedded Optical Intelligence 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) WSON Wavelength Switched Optical Network Contention-less - Same frequency can be added/dropped from multiple ports on same device.

15 Cisco WSON Foundation for Multi-Layer Information Exchange Linear Impairments Power Loss Chromatic Dispersion (CD) Polarization Mode Dispersion (PMD) Optical Signal to Noise Ratio (OSNR) Non linear Optical impairments: Self-Phase Modulation (SPM) Cross-Phase Modulation (XPM) Four-Wave Mixing (FWM) Topology Lambda assignment Route choices (C-SPF) Interface Characteristics Bit rate FEC Modulation format Regeneration Capability 15

16 Wavelength Switched Optical Network Example Beijing Bangkok Tokyo NCS2000 Network Phuket 16

17 Wavelength Switched Optical Network Example Beijing Bangkok Tokyo NCS2000 Network Phuket 17

18 Wavelength Switched Optical Network Example WSON Restoration Fiber Cut! Path Beijing to Bangkok affected Beijing Bangkok Tokyo NCS2000 Network Phuket 18

19 Wavelength Switched Optical Network Example No other path for blue wavelength - other wavelengths tried Beijing Bangkok Tokyo NCS2000 Network Phuket 19

20 Wavelength Switched Optical Network Example Embedded WSON intelligence locates and verifies a new path, with new lambda Beijing Bangkok Tokyo NCS2000 Network Phuket 20

21 Wavelength Switched Optical Network Example Same Router interfaces and Transponders used! Beijing Bangkok Tokyo NCS2000 Network Phuket 21

22 Who is standardizing and drafting WSON? Title Draft Vendor Contributing Framework for GMPLS and PCE Control of Wavelength Switched Optical Networks (WSON) RFC6163 Huawei NTT Service Provider Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks draft-ietf-ccamp-rwawson-encode-23.txt Huawe Cisco NTT General Network Element Constraint Encoding for GMPLS Controlled Networks draft-ietf-ccampgeneral-constraintencode-13 Huawei NTT Signaling Extensions for Wavelength Switched Optical Networks draft-ietf-ccamp-wsonsignaling-06.txt Cisco Huawei NICT GMPLS OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks draft-ietf-ccamp-wsonsignal-compatibilityospf-12.txt Huawei A Framework for the Control of Wavelength Switched Optical Networks (WSON) with Impairments RFC6566 Cisco Huawei

23 Who is standardizing and drafting WSON? Title Draft Vendor Service Provider Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) extension for recording TE Metric of a Label Switched Path Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extension for Additional Signal Types in G.709 OTN Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Path Diversity using Exclude Route Information Model for Wavelength Switched Optical Networks (WSONs) with Impairments Validation Generalized Multiprotocol Label Switching (GMPLS) User- Network Interface (UNI): Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) draft-ietf-ccamp-te-metricrecording-04.txt draft-ietf-ccamp-additionalsignal-type-g709v3-00.txt draft-ietf-ccamp-lspdiversity-05.txt draft-ietf-ccamp-wson-ivinfo-00 RFC 4208 Cisco Cisco Cisco Huawei ALU Huawei Cisco Cisco Juniper KDDI Deutsche Telekom PCEP Requirements for WSON Routing and Wavelength Assignment draft-ietf-pce-wson-routingwavelength-10.txt Huawei NTT KDDI Telefonica

24 Current Status of WSON Deployment Deployed Evaluating Deutsche Telekom Germany (Cisco) Verizon USA AT & T USA Trans Telekom Russia (Cisco) Cogent USA Verizon USA Indosat - Indonesia Comcast USA Time Warner Cable USA Samsung SDS Korea Cox USA Telus Canada Reliance India XO USA Rogers Canada Maxis - Malaysia Level 3 Global Charter USA DTAC - Thailand Telmex Mexico Movile Brazil True - Thailand Telefonica Spain Telecom Spain Spain FET Taiwan ComHem Sweden Telecom Italia Italy FPT Vietnam (Cisco) Tele2 Sweden CHT Taiwan Vietnam Telekom Vietnam Telecom South Africa SA Etisalat UAE MOI KSA Saudi Arabia Wind Americas

25 nlight Provisioning Packet Layer requests WSON circuit via GMPLS UNI User-Network Interface (UNI) to implement an overlay model (RFC 4208) between two networks with limited communication between them Enables a router to signal paths dynamically through a DWDM network Paths may be signaled with diversity requirements Building block for multi-layer protection Adds agility to network H E L L O my name is I IPP H E L L O my name is Optical 25

26 nlight Control Plane Packet Layer Programmable and Virtualized Massive Scale and Density NCS 6000, ASR 9000, CRS, NCS4000 nlight Control Plane GMPLS-UNI extensions submitted to IETF Constraint based routing - latency, SRLG, diversity Multi-layer Restoration Optical Layer OTN, DWDM, and Packet Integration NCS 4000 Touchless, Programmable ROADM NCS 2000

27 nlight Constraint Based Routing Examples SRLG #1 Packet Node A SRLG #2 Packet Node B [Packet Node A] I need a wavelength to Packet Node B. (basic provisioning shortest path) [Packet Node A] I need a wavelength to Packet Node B, disjoint from circuit blue. [Packet Node A] I need a wavelength to Packet Node B, that avoids SRLG s #1 and #2.

28 Control Plane Evolution SDN The Network is the Database Automation + Programmability WSON Embedded Optical Intelligence nlight Control Plane Information Sharing between Layers GMPLS-UNI Multi-Layer Provisioning and Control

29 Control Plane: Multi-Layer or Optical Restoration Why should I care? Maintain the same capacity and resiliency while using fewer IP and DWDM interfaces. This results in lower CapEx. How is it done? By allowing higher interface utilization due to the fast and intelligent re-use of stranded network assets during failures.

30 Restoration for optical failures Premium: 30G BE: 90G BB1 3x 100G BB2 Worst-case stable: 120G on 300G Avg IP util: 120/300= 47%% Premium: 30G BE: 90G BB1 2x 100G BB2 Worst-case transient: 120G on 100G. BE loss for short time but..rst-case stable: 120G on 200G Avg IP util: 120/200= 60%= 60% In a real SP network: 10-34% less interfaces (less router ports, less transponders, less wavelengths, less power, more scale)

31 Real World Analysis Multi-Layer Capacity Planning for IP- Optical Networks IEEE Comm Mag January 2014 paper authored by Cisco, Deutsche Telekom, and Telefonica Multi-layer Restoration - The Impact on the Optical Layer OFC 2014 paper authored by Deutsche Telekom

32 Interface Savings Summary 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 4 node example DT year 1 DT year 5 TEF year 1 TEF year 5 60% Saving! IEEE Comm Mag Paper with Deutsche Baseline MLBO Telekom and Telefonica Multi-Layer Capacity Planning for IP-Optical Networks MLBO+MLR-O MLBO+MLR-O+MLR-P Note: this not only saves CAPEX for IP router ports, but also transponders, wavelengths, power, chassis,

33 Multi-Layer/Optical Restoration - Summary The combination of nlight ROADM and nlight Control Plane allows the duration of IP link failures to be seconds or minutes, instead of hours or days. If critical traffic is prioritized, and temporary congestion for best-effort traffic is acceptable, the utilization of IP interfaces can be increased, and therefore their quantity reduced, while maintaining SLA s. A 30% to 60% reduction in core interfaces (IP and DWDM) is achievable

34 Summary

35 Packet/Optical Integration Summary Pro-Active Protection - FRR Optical or Multi Layer Restoration Shared Risk Visibility 3-Level Protection Elimination of Interconnect Optics Increase Utilization of Links Cross-Layer Optimization Investment Protection Simplified Turn-up Coordinated Maintenance Reduced Planning/Forecasting End-End Automation SRLG Awareness

36 A Phased Approach to SDN - Building Trust in the Network nlight Multi-Layer Control Plane Multi-Layer Information Sharing and Provisioning Leverage GMPLS-UNI Building Trust Network Optimization Powerful offline analysis of real-time data Cisco Quantum WAN Orchestration Cisco MATE Dynamic Online Multi-Layer Control Dynamic Online Multi-Layer Capabilities Hybrid Control - best of distributed and centralized 37

37