Next Generation Access Architecture (NGA 2 ) -Evolution and Convergence. June 3-4, 2009 NGN Forum, Taipei

Transcription

1 Next Generation Access Architecture (NGA 2 ) -Evolution and Convergence June 3-4, 2009 NGN Forum, Taipei

2 & Ethernet Evolution A Standard Perspective Enterprise-grade Evolves to Becoming Carrier Grade P2MP Ethernet 2

3 End-to-end Ethernet is the Natural Evolution for a Next Generation Network Application devices are Ethernet-based : Distributed Ethernet Switch with an Optical Backplane Subscriber devices are Ethernet-based Ethernet 10/100/1,000/10,000 Mbps 802.3x Ethernet OLT Optical Backplane ONU 10/100/1,000 Mbps 10/100/1,000 Mbps ONU 10/100 Mbps 3 + (20M subscriber) maturity = interoperability, hundreds of 4 th /5 th - generation products, sophisticated traffic management capabilities + 10G = backwards/forwards compatibility and next-generation bandwidth handling

4 Access Network Today Mobile backhaul with lease line VOD VOD Serv VOD Serv er Serv er er VOD Contr ol TV Heade nd POP Router National IP Network Large Biz service GE Metro Backbone B-RAS GE GE GE GE 100BaseFX GE 2 x GE Aggregation Switch GE EFM 3 rd Party ISP Internet FTTH/MDU Residential service xdsl Residential service FTTH/MDU Residential service Parallel Access Networks with Large Metro Backbone 4

5 Access Network Evolution A Network Perspective 3/4G Node OLT as Access Edge: aggregation Ethernet Switching and aggregation Edge Core DSLAM/MDU 10G MPLS/IP Large Biz Medium Biz 1G/2G Provider BSR/Edge Router Provider Router SMB SOHO FTTH High subscriber density and service diversity High Switching capacity and TM capability Evolves to Becoming An Unified Access Technology & Smaller (or disappearing) Metro Backbone 5

6 Requirement and Technologies for NGA 2 Higher subscriber Density 10K to 60K (10X DSL) High port density, high split ratio Strong TM, MDU solution Increased Subscriber BW 10M to 100M (10X DSL) 10G High switching capacity, Strong TM Large Geographical Area Radius 20km to 30km+ (10X DSL) Extended or Long reach Diverse Services / Ethernet Transport of Tight Timing Carrier Grade Low OpEx and CapEx Investment Protection Stringent SLA requirement and diverse types of SLAs Frequency sync: +/- 100ppb to +/- 50ppb Phase: +/- 5us to +/- 1.25us High reliability, Performance and Fault management per sub and per Mbps cost, network maintenance and monitoring No fork-lift upgrade, backward compatibility, strong technology roadmap MEF 9/14/18 certification EPL, EVPL, ELAN support, end-to-end Ethernet 1PPS, 8KHz, ToD transport over PWE3 for TDM transport over Protection switching optical monitoring Mature standard, mature IOP, strong Eco-system, /GPON convergence 1G/2G/10G and convergence with XG-PON1 6

7 NGA 2 OLT capacity Requirement and characteristics significantly expand the geographically coverage High sub density in domestic cities Increase the number of subscribers served by OLT by at least a factor of 10 OLT Configurations 1G PON ports 10G ports (100% for MDU) FTTH (64)/MDU ratio (256 for 1G, 512 for 10G) Total subscribers Total Bandwidth to the switching fabric Total inputs to the switching fabric Configuration %/90% GbpsX2 96 Configuration %/80% GbpsX2 80 Configuration %/60% GbpsX2 64 Configuration %/100% GbpsX2 48 Typical 2 to 4 10GE uplinks Such OLT will have an oversubscription ratio between 5:1 to 20:1 Such OLT must be TM enabled to handle service flows and subscriber pipes 7

8 NGA 2 OLT capacity Requirement and characteristics NGA2 OLT Must process service flow and subscriber pipe ER/BRAS Must process IP flow and policy enforcement ISP IP flow (service instances) Service flow (service Classes) Subscriber pipe OLT Configurations 1G PON ports 10G ports (100% for MDU) FTTH (64)/MDU ratio (256 for 1G, 512 for 10G) Total subscribers Configuration %/90% Configuration %/80% Configuration %/60% Configuration %/100% Number of queues (4 queues per subscriber) 8

9 NGA 2 OLT As Traffic Management Edge TDM, Voice, Data OLT as first bandwidth congestion point Mobile TDM, Voice, Various Data 00 s Gbps 0 s Gbps Business Residential video, Voice, H/L Data Service Diversity Service Velocity 000 s subscriber pipes 0,000 s service class flows Bandwidth Velocity subscriber density per sub bandwidth Such scalability requires distributed TM Must isolate and protect each subscriber and service class flow with strong TM 9

10 NGA 2 OLT Design Paradigm - Dumb LC/ Intelligent S C Data HDR MAC VLAN Processing Line Card (LC) Backplane IF Backplane IF TM TM TMTM Switching fabric Uplink IF 200G to 1T switching capacity 80K to 100K queues Massively parallel header processing 10 Switch and Uplink Card (SC)

11 NGA 2 OLT Design Paradigm Dumb LC/Intelligent SC Use of off-shelf commercial chipset 1) Separate Queuing Engine, BW manager, Switch Fabric chips 2) Expensive solution Chip Description 24Gbps Ethernet Packet processor Bandwidth Management engine Sample Switching capacity 24Gbps 2X10G + 24 GEs 20G to 1.2Tbps Sample Queuing capacity Limited Manages multiple Queuing Engine chips Queuing engine N/A Can manage up to 16K queues 16 COS; up to 512MB buffer Clearly neither solution is ideal Switching engine Integrated switching and Traffic manager 40 by 40 cross point switch 20G Per flow queuing Use of in-house purpose built ASIC 1) Not every company can build this technically 2) Huge development effort 3) Very Expensive >100 Engineers 800M transistors 5 X Years = >40 + Development Investment Patents Processor 20MPPS 128K queues 11

12 NGA 2 OLT Design Paradigm - Intelligent LC/Dumb SC Data HDR MAC LUE and Classificat ion Queuing VLAN Processing Traffic shaping/rate limiting and discard Scheduling Line Card (LC) Backplane IF Backplane IF Switching fabric Uplink IF 200G to 1T switching capacity 12 Switch and Uplink Card (SC)

13 Mapping Functions into Designs 3 Chips Off-shelf 802.3ah MAC Off-shelf TM Chip Packet Memory Expensive NP or FPGA QE-2000 Data HDR MAC LUE and Classificat ion Queuing VLAN Processing Traffic shaping/rate limiting and discard Scheduling Line Card (LC) Backplane IF Backplane IF 13

14 Mapping Functions into Designs 2 Chips Off-shelf 802.3ah MAC with TM Packet Memory Expensive NP or FPGA Data HDR MAC LUE and Classificat ion Queuing VLAN Processing Traffic shaping/rate limiting and discard Scheduling Line Card (LC) Backplane IF Backplane IF 14

15 Mapping Functions into Designs 1 Chip Off-shelf 802.3ah MAC with TM & Flexible VLAN Support Packet Memory Data HDR Single chip TK3723 MAC LUE and Classificat ion Queuing VLAN Processing Traffic shaping/rate limiting and discard Scheduling Line Card (LC) Backplane IF Backplane IF 15

16 xpon Evolution: From Fragmentation to Convergence Support for Advanced Services 2.5G is a Differentiator ATM BPON 100% Ethernet Seamless Migration 1.25 Gb/s X New Protocol - Forklift Upgrade? 802.3ah 100% Ethernet Seamless Migration 2.5 Gb/s 2.5 Gb/s GPON ITU-T GPON X Disruption of Services & Network Management. 10 Gb/s Or will there be another Forklift upgrade for 10G GPON? 622 Mb/s 1.25 Gb/s 2.5 Gb/s 10Gb/s Speed 16

17 Maturity- 10G is 5 th -Generation IEEE 802.3ah standard committee formed 802.3ah standard completed commercial deployment Commercial system interoperability achieved 1M commercial subscribers 10G standards committee formed 10M commercial subscribers Commercial chipset IOP achieved 10G standard complete, compatible 1G and 2G 20M commercial subscribers 10G commercial deployment (planned) 36 months chipset generations solution generations 1 st (1Gbps w/ FE) 1 st (1Gbps w/ FE) 2 nd (1Gbps w/ GE) 2 nd (1Gbps w/ GE) 3 rd 2 nd and 3 rd generations were critical period for: adapting to mass market deployment, achieving cost reduction, interoperability, and broad CPE type availability 3 rd 4 th (incl.2.5gbps) 4 th (incl.2.5gbps) 5 th (10Gbps) 5 th (10Gbps 17

18 Time for Convergence? IEEE 802.3ah standard committee formed 802.3ah standard completed commercial deployment Commercial system interoperability achieved 1M commercial subscribers 10G standards committee formed 10M commercial subscribers Commercial chipset IOP achieved 10G standard complete, compatible 1G and 2G 20M commercial subscribers 10G commercial deployment (planned) 36 months GPON ITU G984 standard completed FSAN ratification of GPON standard Commercial system IOP (planned) GPON commercial deployment 10G standards committee (tbd?) 36 months 18

19 Convergence - ITU Proposal to IEEE Leverage maturity of 10G Standard Convergence would allow HW compatibility with existing, commercial deployments 19

20 Converged and GPON at 10G Speed Convergence Allows a single solution for a single problem Consolidated Volume, lower cost Same PMD Same Optics Same PCS Same SerDes Harmonized MAC Same MAC IC Separate Management Plane GPON OMCI can be tunneled in extensible OAM * Frank Effenberger, Huawei, Geneva, Joint ITU-T/IEEE Workshop, June,

21 Teknovus Key Carrier Class Technology Roadmap Speed, Density, Capacity Traffic Management Optical Monitoring 1PPS/8KHz/ToD transport 10G High Density Protection Switching MEF Compliance DOCSIS Over 802.1ag/Y.1731 Ethernet OAM MDU Solution 10G and XG-PON Convergence* Carrier Grade Features 1/2009 1/2010 1/ * Currently being proposed by ITU-T SG15/Q2 and GPON Vendors. Teknovus is actively participating. 21

22 Teknovus 1G/2G/10G Product Roadmap 3 Generations of Silicon in Production 1G TK3713 ONU 2.5G TK3714 ONU TK3715 ONU (China) 10G Next Generation Silicon TK G ONU TK G ONU TK3717 ONU TK3716 ONU TK3701 ONU TK3721 OLT TK3723 2x OLT TK3718 MDU ONU TK3788 8x OLT TK G OLT TK2701 Burst SerDes ONU 2009 & 2010 ONU ODN Optical Line ONU Terminal 22 (OLT)

23 Thank You 23