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IP over DWDM Tim Pennell WW SP Technical Operations IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 1 Outline ƒ The case for IP optimized transport ƒ Changes to the architecture of the network ƒ Cisco solution and direction ƒ Network Management ƒ Summary IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 2 Overall Traffic Growth Is Straining All Known Network Architectures Global IP Traffic—By Segment ƒ Legacy applications moving to IP Video – SD, HD, Broadcast Cable Voice ƒ New applications almost exclusively IP Video - On Demand, DVRs, Switched Digital, Video conferencing … Audio – Streaming audio, Internet radio, Digital juke boxes,etc…. For Perspective: High-Speed Data, Internet Over-the-Top Content providers—i.e., YouTube 1 Exabyte = 5 X All the World’s Printed Matter ƒ Household Bandwidth Needs in 2010: Applications: HDTV + SDTV + PVRs + HSD + VoIPPhones 5 Exabytes = All Words ever Spoken Twenty such homes would generate more traffic than traveled the entire Internet backbone in 1995 *Source: Cisco Estimates, Ovum, Gartner, IDC, Merrill Lynch, MRG, MPA, Public Company Data IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 3 IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 4 Where does this take us ? ƒ Higher bandwidths are needed to address this growth: 10 Gig networks beginning to feel the strain Cannot rely on L2/L3 aggregation: LAG 4 X 10G 40G Cannot rely on L1 aggregation: DWDM ports are not unlimited ƒ Increase wavelength capacity as soon as viable: Move to higher data rates per lambda, i.e. 40G and 100G BUT must operate over existing infrastructure AND ideally with equivalent performance to 10G Requires advanced optical modulation schemes ƒ Remove all unnecessary network layers leaving only: Service layer (IP) Transport layer (DWDM) ƒ Integrate DWDM technology on Router: IPoDWDM IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 5 Typical IP Network + Optical Network Transponders converting short reach to λ Core Router Router blind to L0 issues Electrical switching – OEO conversions P2P DWDM Electrical XC Manual patching of connections IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 6 Cisco IPoDWDM Architecture Integrated transponders Core Router Router aware of L0 Photonic switching – no OEO conversions Optical control plane Exchanging data w routers Mesh ROADM IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. ROADM Cisco Confidential 7 Cisco IPoDWDM Strategy ƒ Element Integration Integrate transponder functionality onto routing platforms (10GE, 40G, G.709, EFEC) Integrating photonic switching into DWDM platforms (ROADM / WXC) CRS-1 ƒ Control Integration SP Benefits Scale & Performance Lower CAPEX/OPEX Increased Reliability Speed to Service ƒ Management Integration Separate or integrated management © 2008 Cisco Systems, Inc. All rights reserved. 7600 IP Layer DWDM aware GMPLS for provisioning of lambdas driven by IP control plane Coordination between layers (e.g. SRLG, NLAC) IPoDWDM 12000 Cisco Confidential Element Integration Control Integration Management Integration Service Provider DWDM Layer Core Network ONS 15454 MSTP ROADM & WXC 8 Immediate Benefits of IPoDWDM solution Before WDM Transponders Integrated into Router ƒ Lower CapEx Elimination of OEOs ƒ Lower OpEx Space, power, management ƒ Enhanced resiliency Fewer active components ƒInvestment protection Router ROADM DWDM I/F Router Transponder ROADM 40G and beyond, interoperability over existing 10G systems IPoDWDM © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 9 Replacing TDM layer functions 1. Easy operations (OAM&P) – – – 2. Fast protection • • 3. Control plane provides fast failure indications to optical switches Router based fast reroute (FRR) can be more economical and as fast/reliable as transport layer protection Sub-wavelength grooming & aggregation • • IPoDWDM G.709 overheads mimic SONET/SDH functions GMPLS allows optical layer visibility into hard to detect failures Integrated optics allows for low cost optical monitoring Not needed if router trunks can fill 10G wavelengths Manage bandwidth at the wavelength level using optical switches © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential 10