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Infocom03 rajiv

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optical networking app

optical networking app

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  • 1. The Future of Optical Networking Rajiv Ramaswami rajivr@cisco.com Acknowledgement: Ori GerstelSession NumberPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 1
  • 2. Optical Market Forecast (WW in $M)350003000025000200001500010000 5000 0 1999 2000 2001 2002 2003 2004 2005 2006 DWDM-LH DWDM-Metro SONET SDH DCS OCS • Post bubble growth is modest • Capex driven by revenue; metro emphasis • Bulk of spending still in SONET/SDH, not WDMPresentation_ID • Industry consolidation © 2001, Cisco Systems, Inc. All rights reserved. 2
  • 3. Technology Adoption in the Network MSPP: Multi-service provisioning platforms TDM and packet services over SONET MSSP: Multi-service switching platforms STS-level optical (electrical) cross connect Node consolidation, mesh networking MSTP: Multi-service transport platforms Optimize multiservice TDM, stat mux + DWDM Dynamic optical networks Time-of-day & BOD connections Packet switching / Burst switching 2000 2001 2002 2003 2004 2005 … Never?Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 3
  • 4. MSPP – MSSP – MSTP: how do they fit in? Inter Office Metro/Regional 200+km, 10Gb, Multiservice MSPP MSPP Access/Collector Intra-Metro/Regional CO/POP Access Collector Multiservice Provisioning Transport Fabric Multiservice Provisioning Transport Fabric 50-80 km, 2.5 Gb & 10 Gb, Multiservice Platform Platform DS-1 to OC-192 TDM DS-1 to OC-192 TDM Access/Collector 10/100Mb and GbE 10/100Mb and GbE Transport Fabric Integrated ITU optics Integrated ITU optics Access/Collector Transport Fabric Access MSPP Access MSPP DS-1 to OC-48 TDM DS-1 to OC-48 TDM Metro/Regional Hub Edge Switching/Routing Multi-band Cross-connect 10/100Mb and GbE 10/100Mb and GbE Customer Aggregation CPE CPE Service Rings Point, POP or Co-Lo Service 10-20 km, Service Aggregation RingsPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 4
  • 5. MSPP – MSSP – MSTP: how do they fit in? MSSP MSSP Multiservice Switching Multiservice Switching Platform Platform 320 Gb/s to Multi Tb/s 320 Gb/s to Multi Tb/s DS3 to OC-192 TDM DS3 to OC-192 TDM Non-blocking VC-4 / /STS-1 Non-blocking VC-4 STS-1 Cross-connect Matrix Cross-connect Matrix ITU Optics ITU Optics 1Gb/s & 10Gb/s Ethernet 1Gb/s & 10Gb/s EthernetPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 5
  • 6. MSPP – MSSP – MSTP: how do they fit in? ONS 15454 MSPP ONS 15600 MSSP Inter OfficeONS 15454 MSPP ONS 15600 MSSP Metro/Regional Multiservice Platform Multiservice Platform Multiservice Switching 200+km, 10Gb, Multiservice Multiservice Switching MSTP MSTP DWDM withor32, 10Gto STM- Support for MSPP software Support forE1/DS-1 128, 2.5G or E1/DS-1 to STM- 128, 2.5G 32, 10G DWDM with MSPP software CO/POP Accesswellas 64/OC-192, asin Collector SDH/SONET well single intelligence 10 ina single Access/Collector Intra-Metro/Regional intelligenceas Gb, Multiservice Transport Fabric 64/OC-192, SDH/SONET a as Transport Fabric 50-80 10/100Mb and GbE in a km, 2.5 Gb & chassis and GbE in a 10/100Mb chassis Access chassis regional Accessthrough single chassis regional single through reach (100s of VC-4 STS-1 Non-blocking km) / /STS-1 Non-blocking VC-4 reach (100s of km) Integrated ITU optics with Cross-connect optics with Integrated ITU Matrix Cross-connect Matrix Access/Collector Flexible OADMs 32, 100Ghz wavelengths Flexible OADMs 2.5G 32, 100Ghz wavelengths Transport Fabric Scalable to 2048, 2.5G Scalable to 2048, Access/Collector Robust,&carrier-classDWDM System carrier-class DWDM NEBS3 &OSMINE certified Robust, OSMINE certified NEBS3 System Transport Fabric λ ITUOptics λServices ITU Optics Services Metro/Regional Hub 10GigE,10Gb Ethernet Fiber 1Gb & 10Gb Ethernet Fiber 10GigE,GigE, ESCON, 1Gb & GigE, ESCON, Edge Switching/Routing Multi-band Cross-connect Channel, SDH/SONET 150M Channel, SDH/SONET 150M to 10G to 10G Customer Aggregation CPE CPE Service Rings Point, POP or Co-Lo Service 10-20 km, Service Aggregation RingsPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 6
  • 7. Innovations for Multiservice over SONET/SDH Service Delivery • Deploying advanced services is key to profitability Advanced Services • Ethernet, Video, VoIP, and SAN Interconnect key service needs • QoS is necessary for advanced services and providing SLAs • Cisco IOS provides advanced per- QoS Engine packet, per port QoS • Packet Multiplexing is crucial for network efficiency and scale • Cisco technology innovations Packet Multiplexing to the (MPLS, RPR, EoS) enable this Transport Layer • SONET/SDH will need to become more efficient • GFP, CCAT, VCAT, and LCAS all Data-Optimized SONET/SDH offer incremental improvementsPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 7
  • 8. Data Transport Evolution Internet, IXC LH handoff and/or ILEC Regional Net Enterprise B SONET/SDH RingEnterprise A SONET/SDH Ring Enterprise A Ethernet Private Line: point-to-point SONET/SDH Ring “pipe” interconnecting end customer sites (line rate or bandwidth scaled) Transparent LAN Service: LAN extension between several sitesEnterprise C Enterprise C Internet Access: point-to-point Enterprise B Enterprise C connection, customer site to POP Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 8
  • 9. Data Transport Evolution Internet, Point to point IXC LH handoff and/or ILEC Regional Net Point to multi point Shared Ring Enterprise B SONET/SDH RingEnterprise A SONET/SDH Ring Enterprise A Ethernet and IP switching and QoS SONET/SDH Ring Integrated Ethernet switching and IP routing VLAN support (802.1Q and QinQ) Diff-serv QoS implementationEnterprise C Enterprise C Ethernet transport over SONET Efficient LEX, PPP/BCP and Cisco HDLC encapsulation Enterprise B Enterprise C GFP encapsulation HO-VCAT and LO-VCAT with LCAS RPR Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 9
  • 10. What about the Near Future? Topic When? Why? Electrical mesh 2002-2004 Reduced bandwidth makes sense, protection but complicated to get right Optical control plane/ 2005- Initial application for scalability, GMPLS reduced network mgt cost Future application for dynamic services Flexible OADMs 2003- Flexible initially, ROADMs later Photonic switching 2006- Electrical switching good enough Incorporated into ROADMs Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 10
  • 11. What about the Far Future? Topic When? Why? All-optical mesh Far out Complicated and requires protection advances in optical technology Burst switching Far out Not as challenging as packet switching, but must be justified over simple optical bypass + sophisticated electrical routers Packet switching Never? Too many challenges with ns-level optics and sophisticated logic at this layer Interoperability at the Never? Too complicated. Single-vendor optical layer islands are good enough Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 11
  • 12. Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 12
  • 13. Other potential topics for discussion (let me know which ones to expand upon) • Why stat muxing should be part of the transport layer? (interesting for the infocom crowd) – we have good slides on this • The future of ULH, 40G and up • How everything changes if OEOs become real cheap – AON may go away or become a band level solution • Photonic switching (from 1000 port OOO to OADM w varying levels of agility) • Fully automated photonic layer (pre-deployment issue)Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 13
  • 14. MSTP Architecture λ: 150M to 10G λ3 DWDM Fiber λ2 λ1 ADM/ Packet Transponder DCS Switch Muxponder Gigabit Ethernet Three Core Functions: Internet VoIP LAN 1. SONET/SDH transport with 10G SDH/SONET TDM aggregation λ1 2.5G 600M 2. Native Ethernet, IP, SAN 150M switching and aggregation E-3/DS-3 3. Intelligent DWDM with wavelength services Streamlines CapExPresentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 14