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Deploying High-Performance Metro Optical Infrastructures by peterzhangonline

VIEWS: 16 PAGES: 45

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                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.   1




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                                    Deploying High-Performance
                                    Metro Optical Infrastructures
                                                                                           Session OPT-210




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                           Agenda

                                          • Market Drivers
                                          • Deployment Alternatives
                                          • Metro Optical Transport Platform
                                          • Metro IP/Resilient Packet Ring (RPR)
                                          • Metro DWDM
                                          • Metro Architecture Examples
                                          • Case Studies
                                          • Summary
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                                        Metro Optical Infrastructure
                                                                                             Market Drivers




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                           Chart to the New World


                                                                                              Content and
                                                                                            Services Delivery
                                                                                            Enhance Your Value


                                      Voice and                                                IP + Optical           Broadband and
                                   Circuit Migration                                                                  Mobile Access
                                  Shift Your Revenue                                       Build Your Foundation    Reach Your Customers


                                                                                              Internet Scale
                                                                                               Deployment
                                                                                           Accelerate Your Growth




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                           Cisco IP+Optical
                           Combining All the Elements

                                                                                            IP-Based Unified
                                                                                            Control Plane
                                                                                            • MP? S with IP routing
                                                                                            • IP intelligence
                       IP Platforms                                                                                                                   Optical Platforms
                       • POS/DPT/VSR innovation                                                                                                       • Scalable SONET/SDH
                                                                                                IP + Optical
                       • 10G scalability and                                                                                                          • Ethernet interfaces
                         performance                                                        Build Your Foundation                                     • Integrated DWDM
                       • Direct Fiber                                                                                                                 • Storage services


                                                                                           Network Management
                                                                                           • Framework for integration
                                                                                           • CORBA for automation
                                                                                           • GUI for operators

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                           Transport Network Architecture

                                                       Control Planes and Network Management Integration




                                                                                                           Service POP
                                                                                                                       Edge Routing

                                                                                                                                      Core Routing
                                                                                                                       Edge Routing

                                                                                                                                      Core Routing
                                                                                                                       Edge Routing

                                                                                                                                      Core Routing
                                                                                                            Grooming
                                                                                                            Grooming
                                                                                                            Grooming




                                        Access                           Metro Network
                                                                          Metro Network                                                                Core Transport
                                                                       Connects Customers
                                                                       Connects Customers
                                                                       Connects Customers                                                            Interconnects PoPs
                                                                           to Services
                                                                           to Services
                                                                                                        Service Adaptation
                                                                                                        Service Adaptation
                                                                                                       and Packet Switching
                                                                                                       and Packet Switching
                                         •   DSL
                                                                                                         Packet Services:
                                         •   Fixed Wireless
                                         •   Frame Relay
                                         •   ATM            • SONET/SDH                            •   VPNs          • Web Hosting                             • SONET/SDH
                                         •   Leased Lines • Metro DWDM                             •   QoS           • Voice over Packet                       • DWDM Mesh
                                                            • Metro IP/RPR                         •   App Hosting • Packet Transport
                                         •   Cable
                                                                                                   •   Content Hosting
                                         •   Ethernet
                      OPT-210                                                      The Services Bandwidth Barrier
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                           Service Providers Need…
                      • Service density and velocity to:
                                Drive profitability with the highest revenue
                                per wavelength
                                Secure the lowest cost per incremental
                                service
                      • Efficient service delivery to:
                                Respond to new customer requirements
                                wavelength by wavelength
                                Rapidly scale to meet varying bandwidth
                                demands
                      • Flexibility of transport protocol to:
                                Aggregate a variety of low bit rate services
                                on any wavelength
                                Transport any data service on any
                                wavelength
                      • Externalization of storage on the
                        network to:
                                Share and protect information and storage
                                resources
                                Provide accessibility to mission critical
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                                stored data
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                           What Is Driving Demand in the Metro

                                   • Availability of fiber
                                                  Fiber service providers
                                   • Lower cost per bit
                                                  Price reduction of optics
                                                  Shorter distances in the metro
                                   • Economic impact
                                                  Scalability to accommodate Internet-scale growth
                                                  Radical bandwidth economics: DS1-Ocx, 10Mbps-10GE
                                                  Efficient delivery of packet-based services
                                                  Varying levels of restoration and protection (applications,
                                                  hosting, VoIP, etc.)
                                   • Services bandwidth barrier in the metro
                                                  Metro networks are under-built
                                                  Need to deliver services such as: Storage, VoIP, broadband access
                                   • Service velocity
                                                  Mechanisms for rapid end-to-end provisioning of services
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                           Fiber Service Providers

                                                                                             London




                                                Chicago                                                     Manhattan


                                             • Abundance of dark fiber
                                             • Pricing ($50–750/mile per month MFN)
                                             • Enables new design possibilities
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                           The Cost of Bandwidth

                                        160                                                                             OC-3
                                                                                                                        OC-12
                                                                                                                        OC-48
                                        140                                                                             OC-192
                                        120

                                        100
                        $/Mb/s           80

                                         60

                                         40

                                         20

                                            0
                                                                        1996               1997   1998   2000
                          Source: Ryan, Hankin and Kent and Internal Data
                          Note: Price info is from North America
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                           Markets and Drivers

                                                                                  Financial Community

                                    Utilities                                                                  Government
                                                                                            Internet
                                                                                           Revolution
                                                                   E-Business                           Video and
                                                                                                         Content
                                                 Broadband Access                                       Streaming
                                                                                             Storage
                                                                                           Connectivity
                                        Education                                                             Healthcare

                                                                                Enterprise Backbones
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                                                   Metro Optical Solutions
                                                                                    Deployment Alternatives




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                           Traditional Metro Infrastructure
                           Pre-Internet

                                                                                                          OC-48/STM -16

                                                                                              Backbone Ring                    Transit
                                                                                                                               Switch


                                                                                3/3/1 or 4/3/1 Digital Cross Connect
                                                                                3/3/1 or 4/3/1 Digital Cross Connect


                                                                                           Business   Metropolitan                   Local
                                                                                             Ring         Ring                       Switch
                                                            OC-3/STM -1
                                                                                                                      OC-12/STM -4
                                                                                                                     Local
                                                                                                                     Switch

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                           Traditional Metro TDM Infrastructure
                           Internet Era

                                                                                                          OC-48/STM -16


                                                                                              Backbone Ring




                                                                                3/3/1 or 4/3/1 Digital Cross Connect
                                                                                3/3/1 or 4/3/1 Digital Cross Connect


                                                                                           Business   Metropolitan
                                                                                             Ring         Ring




                                                OC-3/STM -1                                                               OC-12/STM -4


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                           Metro Deployment Strategies

                                  • Lease dark fiber from other providers
                                  • Lease bandwidth from other providers
                                  • Build a new network
                                  • Use internal corporate network
                                  • Upgrade to higher SONET/SDH rates
                                  • Deploy metro WDM
                                  • Deploy metro IP/RPR network
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                           Leasing Dark Fiber

                               • Pros
                                            Quick turn around time (time to market)
                                            Less overhead
                                            Flexibility of fiber topologies

                               • Cons
                                            Can be expensive if BW is not highly utilized
                                            May require long term agreements


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                           Leasing Bandwidth

                               • Pros
                                           Cost-effective for current traffic volumes
                                           Creates opportunities for volume discounts

                               • Cons
                                           Gives least control over growth
                                           Incremental costs for providing new services
                                           Could require long term contracts
                          Note: Leasing “bandwidth” doesn’t necessarily mean transport onl y—
                                It could also mean leasing IP services
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                           Build a New Network

                                • Pros
                                            Gives the best control over growth, adding
                                            new services and quality
                                            Opens opportunity for new revenue streams
                                            by leasing bandwidth to others

                                • Cons
                                            Requires more time and up-front capital
                                            than leasing
                                            Requires right-of-way

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                           Use Internal Corporate Network

                                  • Pros
                                                 Very quick turn around time
                                                 Enables the utilization of unused internal
                                                 bandwidth

                                  • Cons
                                                 Consists of old fiber spliced together with
                                                 varying quality
                                                 Cross-subsidy issues

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                           Upgrade to Higher SONET/SDH Rates

                                    • Pros
                                                   Adds multi-service capabilities
                                                   Increases circuit densities
                                                   Less equipment deployed for a given bandwidth
                                                   demand
                                                   Easier to manage and troubleshoot
                                                   Provides opportunity to recover IOF

                                    • Cons
                                                   May require complete new HW
                                                   Current fiber may not fit higher speeds
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                           Deploy Metro WDM

                                  • Pros
                                                Cost-justified in spans longer than 15 miles (65 km)
                                                Can support new services such as storage, wavelength
                                                leasing, 10 GE
                                                Fiber vs WDM initial first cost comparison:
                                                    $110 million for fiber
                                                    -$50 million for WDM
                                                      $60 million available for reallocation to other network
                                                      improvement projects (source: RHK, 2000)
                                  • Cons
                                                Limited number of nodes on the ring
                                                Planning—Budget spans, distances etc.

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                           Deploy Metro IP/RPR Network

                                               • Pros
                                                              Provides scalable bandwidth
                                                              Supports new revenue data services
                                                              Fast provisioning of services
                                                              Simplifies network management and
                                                              troubleshooting

                                               • Cons
                                                              Only good for data/packet traffic
                                                              Proprietary solution—No standard yet

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                           Traditional Metro TDM Infrastructure
                           Internet Era

                                                                                                                         OC-48/STM -16


                                                                                                     Backbone Ring




                                                                                3/3/1 or 4/3/1 Digital Cross Connect
                                                                                3/3/1 or 4/3/1 Digital Cross Connect


                                                                                             Business                Metropolitan
                                                                                               Ring                      Ring




                                                OC-3/STM -1                                                                                     OC-12/STM -4


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                           New Metro Infrastructure


                                                                                                                   GSR


                                                                                                                   GSR

                                         DWDM                                                                    Regional                 GSR
                                        Backbone
                                                                                       GSR
                                                                                                                                                                         ?1
                                                                                                                 Metro/IP
                                         Network                                                                                                    ?4
                                                                                                                   GSR
                                                                                                                                                                         ?2
                                                                                                                                                    ?2
                                                                                                                         Me
                                                                                                                         Me




                        OC-3/12/48/192 OC-3/12/48/192                                                                                                               ?4
                                                                                                                           ttro




                        STM-1/4/16/48  STM-1/4/16/48
                                                                                                             s




                                                                                                                             ro//I
                                                                                                            ss




                                                                                                                                                                              ?3
                                                                                                          es




                                                                                                                                                         ?1
                                                                                                         ce




                                                                                                                                 IP A




                        Business Ring Metropolitan Ring
                                                                                                                                   PA




                                                                                                                                                               ?3
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                                        Metro Optical Infrastructure
                                                                        Metro Optical Transport Platform




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                           Metro Network Solutions
                           Metro Optical Transport Platform

                                                                                  OC-48/STM -16


                                                                                                                      DWDM
                                                    Backbone Ring
                                                                                                                 Backbone Network


                                    3/3/1 or 4/3/1 Digital Cross Connect
                                    3/3/1 or 4/3/1 Digital Cross Connect

                                            Business            Metropolitan
                                              Ring                 Ring                                   OC-3/12/48/192   OC-3/12/48/192
                                                                                                          STM-1/4/16/48     STM-1/4/16/48
                                                                                                               Business    Metropolitan
                                                                                                               Ring               Ring

                      OC-3/STM -1                                                          OC-12/STM -4

                                                                                 • Scalable transport
                                                                                 • Multi service interface
                                                                                 • Integrated DWDM
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                           Metro Optical Transport Platform Benefits

                                        • Supercharged SDH/SONET transport
                                                      Multi-bit rate OC-n/STMn transport
                                                      Integrated VT/VC and STS bandwidth management
                                        • Multiservice capability
                                                      TDM, ethernet, ATM, video,wavelengths
                                                      Integrated data switching and concentration
                                        • Integrated optical networking
                                                      Optical services
                                                      Massive capacity expansion
                                                      Wavelength/OADM management
                                        • Economics impact
                                                      Slashes first costs and operating expenses
                                                      Easy to engineer, install, and use
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                           Supercharged SONET/SDH Transport
                             • Transport
                                         OC-3/STM-1
                                         OC-12/STM-4
                                         OC-48/STM-16
                                         OC-192/STM-64
                                                                                                      OC-3/STM -1
                                         DWDM                                              Ethernet
                                                                                                       Transport
                                                                                            Switch
                             • Integrated VT/VC
                               and STS bandwidth                                                        OC-12/
                                                                                                         STM-4
                                                                                                       Transport     OC-192/     Integrated
                               management                                                   ATM                      STM-64
                                                                                                                    Transport
                                                                                                                                Management
                                                                                                                                  System
                                                                                                                                              DWDM
                                                                                           Switch
                             • Ethernet/TLS
                                                                                                       OC-48/
                             • Integrated                                                              STM-16
                                                                                                      Transport
                               management                                                  Gigabit
                                                                                           Ethernet
                               system                                                       Switch


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                           Multiservice Capability
                                                                                                         —Leased Line
                                                                  ?2 OC-N/STM-N                          —Voice
                                                                                                         —Voice
                                                                                                   LAN VoIP Internet
                                                                                                   LAN VoIP Internet    STSNc—IP Pkts
                                                                                                   Voice Video Data
                                                                                                   Voice Video Data     STSNc—ATM Cells
                                        Fiber                              ?3
                                                                                           ?1    OC-48/STM -16 POS




                            TDM Video ATM Metro IP

                                                        •      Integrated multiservice interfaces
                                                        •      Services aggregated on wavelength(s)
                                                        •      Services dedicated to wavelength(s)
                                                        •      Statistical multiplexing of bursty data traffic
                                                        •      Bandwidth oversubscription
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                           Economics Impact
                            Traditional Implementation                                                          New Paradigm




                                                                       OC-48/STM-16
                                                                       OC-48/STM-16

                                            Backbone Ring



                             3/3/1 or 4/3/1 Digital Cross Connect
                             3/3/1 or 4/3/1 Digital Cross Connect                                            Scalable         Scalable
                     OC-3/STM-1
                                                                                                              OC-N             OC-N
                     OC-3/STM-1


                                                                                   OC-12/STM-4
                                                                                   OC-12/STM-4
                                        •      Slashes transport costs by at least 50%
                                        •      Superior return on investment with efficient bandwidth management
                                        •      Fewer network elements
                                        •      Lowest initial and lifecycle cost
                                        •      Easy to engineer, install and manage
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                           Integrated Optical Networking

                                           VC-4                                    DWDM Link
                                        VC-4-4C
                                    VC-4-16C
                                 VC-4-64C
                           10/100 Ethernet
                         Gigabit Ethernet
                                               ATM



                              • DWDM/SDH/SONET linear, meshed, and ring networking
                              • Optical services
                              • Massive network capacity expansion
                              • Wavelength management
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                                        Metro Optical Infrastructure
                                                                                           Metro IP/RPR




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                           Metro Network Solutions: Metro IP/RPR


                                                               OC-48
                                                               OC-48                                                                         Regional
                                              OC-48Regional Ring OC-48
                                              OC-48              OC-48                                                                       Metro IP
                                                      OC-48
                                                      OC-48

                                                        3/3/1 Digital Cross
                                                        3/3/1 Digital Cross
                                                              Connect
                                                              Connect
                                              OC-3
                                              OC-3                       OC-12
                                                                          OC-12
                                             Access                     Access
                                        OC-3 Ring




                                                                                                                                                    Me
                                        OC-3                             Ring OC-12




                                                                                                                                                    Me
                                                                                OC-12




                                                                                                                                                      ttrro
                                                                                                                                         s
                                              OC-3                       OC-12




                                                                                                                                       ss
                                              OC-3                        OC-12




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                                                                                                                                                                      s
                                                                                                                       Me
                                                                                                                       Me
                                                                   • Scalable internet service
                                                                   • Reliable IP-aware optical transport
                                                                   • Simplified network operations
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                           Metro Network Solutions Powered
                           by Dynamic Packet Transport


                                                                                                        Regional Metro IP


                                                                                                                   Me
                                                                                                                   Me
                                                                                                                     ttro
                                                                                                                      ro
                                                                                                            sss          IP
                                                                                                          ce s
                                                                                                         cc
                                                                                                           e              IPA
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                                                                                           Me
                                                                                           Me




                                • Dynamic Packet Transport (DPT) is a Resilient Packet
                                  Ring (RPR) solution
                                • Based on the Spatial Reuse Protocol (SRP)—RFC 2892
                                • Submitted by Cisco to IEEE 802.17 working group for
                                  consideration as the RPR industry standard
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                           Today’s Networks: Backhaul
                           over TDM Infrastructure
                      OC-12/48 POS             Channelized DS-3
                                                                                           SONET
                                                                                           SONET
                                                                                            ADM
                                                                                            ADM                          ADM
                                                                                                                         ADM
                                                                            DS-3                    DS-3      DS-1
                                                                                                                                    DS-1   Ethernet
                                                                                 SONET
                                                                                 SONET     SONET SONET
                                                                                                 SONET              ADM OC-3/12 ADM
                                                                                                                    ADM         ADM
                                                                                  ADM
                                                                                  ADM             ADM
                                                                                                  ADM
                                                                                           OC-48
                                                                                           SONET                         ADM
                                                                                                                         ADM
                                                                                           SONET         DACS 3/1
                                                             DACS 3/1                       ADM
                                                                                            ADM


                              Point                                                         Metro        Local       Metro Access     Customer
                           of Presence                                                     SONET          CO             Ring          Premise


                                • Customer traffic is backhauled to the nearest PoP
                                  (sometimes 10s or 100s of miles away)
                                • BW is pre-allocated, no statistical multiplexing
                                • Transport “pipe” provides no added service value
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                           Metro IP/RPR
                           Phase 1: DPT in the PoP
                       OC-12/48 DPT Channelized DS-3
                       OC-12/48 DPT
                                                                                           SONET
                                                                                           SONET
                                                                                            ADM
                                                                                            ADM                          ADM
                                                                                                                         ADM
                                                                            DS-3                    DS-3      DS-1
                                                                                                                                    DS-1   Ethernet
                                                                                 SONET
                                                                                 SONET     SONET SONET
                                                                                                 SONET              ADM OC-3/12 ADM
                                                                                                                    ADM         ADM
                                                                                  ADM
                                                                                  ADM             ADM
                                                                                                  ADM
                                                                                           OC-48
                                                                                           SONET                         ADM
                                                                                                                         ADM
                                                                                           SONET         DACS 3/1
                                                             DACS 3/1                       ADM
                                                                                            ADM


                              Point                                                         Metro        Local       Metro Access     Customer
                           of Presence                                                     SONET          CO             Ring          Premise

                                                 • DPT-based PoPs are:
                                                                High performance (multi-gigabit IP)
                                                                Cost effective (fewer line cards/router slots)
                                                                Scalable (number of nodes, ring speed)
                                                                Easier to manage (simplified topology)
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                           Metro IP/RPR:
                           Phase 2: DPT in the Regional Metro
                                                                12000

                                                                                                                   ADM
                                                                                                                   ADM
                                                                                              DS-3      DS-1
                                                                                                                              DS-1      Ethernet
                                                                                                              ADM OC-3/12 ADM
                                                                                                              ADM         ADM
                                                Regional Metro/IP
                                                                                           12000                   ADM
                                                                                                                   ADM
                                                                                                   DACS 3/1


                                                                12000                              Local       Metro Access     Customer
                                                     Regional Metro                                 CO             Ring          Premise

                                               • Regional metro rings based on DPT:
                                                              Extend IP into the Metro area
                                                              Eliminate redundant network transport layers
                                                              Optimize bandwidth for IP
                                                              Simplify management
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                           Metro IP/RPR:
                           Phase 3: DPT in the Metro Access Rings
                                                                12000



                                                                                                                                     Ethernet/IP

                                                Regional Metro/IP                                     Metro/IP Access
                                                                                           12000




                                                                12000                                   Metro Access             Customer
                                                     Regional Metro                                         Ring                  Premise


                                        • Metro access rings based on DPT:
                                                       Provide PoP-to-customer solution optimized for IP
                                                       Distribute IP throughout the Metro area
                                                       Further reduces network cost and complexity
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                           Metro IP/RPR Extending
                           IP to Customer Edge


                            • Broadband IP/                                                        Metro Internet
                              internet access                                                         Access

                            • Revenue-generating IP
                              services (e.g., VoIP,
                              VPN, multimedia)
                            • Ethernet customer
                              subscriber interface                                                           Metro DPT/RPR Ring
                                                                                                                OC-12, OC-48
                            • Rapid service delivery


                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                           41




                           IP Transport Alternatives

                                                                                                    IP +
                                  B-ISDN                                         IP + ATM                           IP + Optical
                                                                                                 SDH/SONET

                                                                        Multiplexing, Protection, and Management at Every Layer
                                        IP


                                        ATM                                                IP        IP

                                                                                                   Legacy
                              SONET/SDH                                                    ATM                          IP
                                                                                                 SONET/SDH

                                  Optical                                           Optical        Optical            Optical




                                           Lower Cost, Complexity, and Overhead
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                           42




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                           Dynamic Packet Transport (DPT)
                           New World IP+Optical Rings

                                          Scalability and Service Optimization
                               • Dual counter rotating                                     Outer Ring   Working
                                 rings—data transport
                                 on both rings
                               • Maximize bandwidth
                                 efficiency for IP
                                 services
                               • Extend reach of
                                 distributed IP                                            Inner Ring
                                 functionality over
                                 metro area
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                      43




                           Dynamic Packet Transport (DPT)
                           New World IP+Optical Rings

                                                                      Reliability and Simplicity
                             • Intelligent Protection                                      Outer Ring   Working
                               Switching (IPS) provide fast
                               ring restoration (< 50ms)
                             • Eliminate SONET/SDH
                               equipment while
                               retaining resilience
                               benefits
                             • Minimize provisioning                                       Inner Ring
                               configuration and
                               maintenance requirements

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                      44




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                           DPT Transport Flexibility




                                                                                            DPT


                                                              Dark                         SONET
                                                                                                        WDM
                                                              Fiber                         /SDH


                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                      45




                                        Metro Optical Infrastructure
                                                                                           Metro DWDM




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                      46




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                           Metro Network Solutions Metro DWDM


                                                          OC-48
                                                          OC-48                                                    ?1
                                                   Backbone Ring
                                        OC-48
                                        OC-48                                 OC-48
                                                                              OC-48
                                                                                           ?4
                                                          OC-48
                                                          OC-48
                                                                                                                   ?2
                                              3/3/1 Digital Cross Connect
                                              3/3/1 Digital Cross Connect
                                                                                           ?2
                                       OC-3
                                       OC-3                            OC-12
                                                                       OC-12
                                      Business                  Metropolitan                                  ?4
                                  OC-3 Ring
                                  OC-3                             Ring OC-12
                                                                           OC-12
                                       OC-3
                                       OC-3                            OC-12
                                                                       OC-12                    ?1                      ?3
                                                                                                         ?3




                                                       • Rapid service creation and
                                                         deployment
                                                       • Scalable bandwidth growth
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                47




                           Metro DWDM Benefits
                               • First “Wavelength to the Building” metro
                                 DWDM solution
                                           Supercharged wavelength services
                                                   Instant wavelengths to the building, premise, or PoP
                                                   SONET/SDH or wavelength interoperability with ONS 15454 and 15327
                                           Service density and end-to-end management
                                                   High density storage and data services
                                                   Massive capacity expansion (32 lambdas @ 10 Gbps each)
                                                   Service multiplexing on a lambda
                                           Unprecedented transport flexibility
                                                   Optical add/drop multiplexing (OADM)
                                                   Support for any service on any wavelength
                                                   Metro and regional applications
                                           Economic benefits
                                                   Lowest cost per service and highest service density
                                                   Quick deployment and turn up
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                48




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                           Metro DWDM as Enabler



                                                                                                Services

                                                                      Next Gen                  Resilient
                                                                                                 Packet         IP/
                                                                    Metro Optical                            Ethernet
                                                                      Transport                   Ring
                                                                                                 (DPT)       Switching
                                                                    (SONET/SDH)

                                                                Metro Dense Wavelength Division Multiplexing
                                                                              (Metro DWDM)

                                                                                           Fiber Infrastructure



                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                        49




                           Purpose Built DWDM 3 Key Missions



                                                                                                            ? on Demand
                                                                                                            • Low-cost
                                                                                                            • OC48 POS, GigE
                                                                                                            • High bandwidth services

                          Next-Generation Optical Transport
                                                                                                             Extended Services Platform
                          • Service density + DWDM                                                           • Storage networking
                          • Plug and play multi-service
                                                                                                             • Multiple GE delivery
                          • Low bandwidth services
                                                                                                             • Data center interconnect/enterprise




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                        50




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                           Metro Optical Transport
                           Platform Metro DWDM Solution
                                                           OC-48 ? 1                                         OC-48 ? 1
                               #1                                                                                                   #1
                                                                  ?2                                            ?2
                               #2                                                                                                   #2
                                                                  ?3                                            ?3
                               #3                                                  DWDM             DWDM                            #3
                                                                                    Filter          Filter
                                                                                    Mux/             Mux/
                                                                                   Demux            Demux


                                                                 ? 18                                           ? 18
                              #18                                                                                                   #18

                                         •      Key features
                                         •      Integration of next generation SDH/SONET and DWDM layer
                                         •      18 ITU-T compliant OC-48/STM-16 interfaces
                                         •      Red and blue ONS 15216 passive DWDM mux/demux
                                         •      Optimized for point-to-point fiber gain
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                  51




                           SONET or Wavelength Interoperability
                           with ONS 15454 and 15327



                                                                                                    Gigabit
                                                                          OC-48                    Data Rates



                                                                                                                        Gigabit
                                                                                                                       Data Rates




                                                                                      Gigabit Ethernet
                                                                                     OC-48 Optical Rings
                                                                                     OC-48 SONET Rings
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                  52




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                           Supercharged Wavelength Services,
                           Unprecedented Transport Flexibility

                       Any Data                       Services POP A                              Services POP B        Aggregating
                        Service                                                                                          a Variety of
                        on Any                                                                                          Low Bit Rate
                      Wavelength                                                                                          Services
                                                                                                                           on Any
                                                                                                                        Wavelength




                                                 Wavelength                                                Wavelength
                                                  Services                                 Subwavelength    Services
                                                                                              Services


                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                          53




                           DPT and Next Generation
                           SDH/SONET over DWDM
                              DPT and Next Gen
                             SONET/SDH Running
                             Concurrently on Two
                                 Separate ?
                                                                                                             DPT



                                                                                           DWDM
                                                                                           Rings


                                                                                                                 Services PoP
                             Packet
                           Services and
                           TDM Services
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                          54




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                           Multi-Service Integration
                                        Legacy Services

                                                                          ATM/
                                              T3/E3
                                                                         SONET
                                                                                           OC12c
                                            OC-3/STM1                                      OC-48c
                                        Data Networking                                    OC-192c

                                                                                                              Optical
                                                                                                             Backbone
                                                              GE/10GE


                                        Storage

                                                                       ESCON
                                                                       FICON
                                                                       Fiber Ch

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                   55




                           DWDM Architecture: Customer Premises
                                                                                                                    East

                                Ring                                                                                ?1
                        Topologies
                        i.e., SONET
                               BLSR
                              or DPT

                                                                                                West
                                                                                                        ?2
                                                                                                             W ?3

                              Linear
                        Topologies
                      i.e., Ethernet
                          or ESCON
                                                                                                 P ?3

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                   56




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                                        Metro Optical Infrastructure
                                                                              Metro Architecture Examples




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                 57




                           Metropolitan Network Solution

                                                                                           DS3
                                                                            DS1                  DS1                      Multi-Tenant



                            OC-12/48                                                                       OC-12/48
                                                                     OC-48/192/DWDM
                            STM-4/16                                                                       STM-4/16
                                                                     STM-16/64/DWDM                                   Gig E


                                                        T1/E1


                                 10/100                                             T3/E3
                                                                                                                       PBX
                                                                                                 10BaseT



                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                 58




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                           Interoffice (IOF) and
                           Collocation Application



                                                                                              IOF Ring



                                                                  Campus                                         Business
                                                                  Network                           UNIVERSITY
                                                                                                                   Park




                                    Multiservice Interfaces: Optical and LAN Access
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                     59




                           IP Transport Application
                                                                                            Aggregator/Core
                                                                                               Location                IP Network
                                                                                                                          Core


                                                                                            OC-N
                        Collector/Remote Location                                            On
                                                                                                                 Collector/Remote Location
                                                                                            Gig E
                         PC
                                         10/100Mbps                                                                          10/100Mbps

                                                                                           OC-12/48/192/DWDM
                                                               OC-N
                                                                                           STM 4/16/64/DWDM                   100 Base T/E

                        Ethernet Switch
                        Ethernet Switch

                        Network Equipment                                                                               Network Equipment


                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                     60




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                           Flexible Ethernet Services Application
                                                                      10/100/1000 Mbps
                                                         Router

                                                         DSLAM

                                        Cable Modems

                                           Edge Switch


                                                                                                                   1000 Mbps
                                                                                                                   1000 Mbps
                               10/100/1000 Mbps
                                        Router

                                        DSLAM

                           Cable Modems
                             Edge Switch


                                         • Efficient ethernet aggregation over SDH/SONET
                                         • Shared bandwidth
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                  61




                           ATM Transport Application
                                                                                              Aggregator/
                                                                                             Core Location              ATM/IP
                                                                                                                     Network Core



                                                                                           OC-3/DS3
                        Collector/Remote Location                                           STM-1              Collector/Remote Location
                                                                                             ATM
                                 OC-3/DS3/STM- 1 ATM                                                                OC-3/DS3/STM- 1 ATM


                                                                                           OC-12/48/192/DWDM
                                                              OC-3/DS3
                                                                                           STM-4/16/48/DWDM      OC-3/DS3
                                                                ATM                                                ATM
                         DSL Switches/                                                                                        DSL Switches/
                         LMDS Equipment                                                                                     LMDS Equipment



                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                  62




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                           Regional Metro IP Internetworking
                           DPT Ring over Dark Fiber
                                                                                                  Metro
                                                                                                 Access
                                                                                                  Rings


                                                                                                  CO
                                                    CO                                     CO


                                                     CO                      DPT Ring      CO




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                   63




                           Regional Metro IP Internetworking:
                           DPT over SONET/SDH Ring

                                                                                                  Metro
                                                                                                 Access
                                                                                                 Rings



                                                                                           CO     CO
                                                   CO

                                                                                 SONET/SDH
                                                     CO
                                                                                   Ring    CO




                                                                                                DPT Ring

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                   64




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                           Metro Internet Access
                           Metro Access Network Architecture

                                                                    IP Backbone


                        POS or SRP




                                                                     OC-48/STM-16
                                                                   or OC-192/STM-64                                 OC-4
                                                                                                                         8
                                                                                              10/100 eth            Acce / S T M - 1
                                                                  Regional Metro Ring                                    ss R       6
                                                                                                                               ing
                                                                                           Customers

                                                                                                   Customers
                                                                                                               Customers
                      OPT-210
                                                                                                                        Customers
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                65




                           Ethernet over DWDM


                                                                                                       • Line-speed gigabit
                                                                                                         ethernet transport
                                                                                                         over DWDM
                                    1000Mbps


                                                                                  ?1                   Nx1000Mbps
                           1000Mbps
                                                                                  ?2



                                                                                                       • Dedicated wavelengths



                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                66




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                           Managed Wavelength Services

                                                                                                ?1
                                     TDM
                                    Network


                                                                                                                  ?5
                                    Layer 2
                                    Network
                                                                                                                   ?2
                                                                                                                  ?3

                                    Layer 3
                                    Network
                                                                            Metro PoP                 ?4
                                                                                                       4

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                67




                           SAN’s—Metro FC/ESCON Data Mirroring



                                        Data Center                                                  Data Center
                                                                      FC
                                                                      FC                             FC
                                                                                                     FC


                                                        ESCON                                             ESCON
                                                                                                          ESCON
                                                        ESCON


                                             Primary                                                 Standby
                                                                          New York         New Jersey




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                68




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                           SSP: Storage Service Providers

                                              • Dark fibers or wavelengths from FSPs
                                              • Offer managed storage services
                                              • GE/10GE, escon, fibre channel, FC/iSCSI
                                                                                           Data Between All Sites




                                                                                               DWDM Metro Network
                                                                                                                    GE/10GE
                                                                                               FC/iSCSI      FC
                                                                    FC
                                                                    FC



                                                                        SAN
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                      69




                                        Metro Optical Infrastructure
                                                                                             Case Studies




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                      70




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                           Case Studies

                                 • Facilities-based metro provider
                                                      Next generation SONET + DWDM

                                 • National fiber-optic carrier
                                                      Metro DWDM

                                 • CLEC/ISP
                                                      Metro IP/DPT

                                 • Community-owned metro core operator
                                                      DWDM + SONET + DPT
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.       71




                           Company B Facilities-
                           Based Metro Provider

                              • Company B profile:
                                         Facilities-based provider of broadband
                                         metropolitan access and long distance
                                         services
                                         Main business:
                                                 Provides metro optical access that connect
                                                 ISPs and CLECs data centers, carrier hotels
                                                 and central offices (COs) to customers
                                                 Owns access to dark fiber in multiple metro
                                                 areas along the East Coast of the US

                      OPT-210
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                           Company B Facilities-
                           Based Metro Provider

                             • Company B main issues
                                        Needed to compete in highly competitive metro areas
                                        dominated by ILECs; Needed to provide clear
                                        competitive advantage
                                        Wanted to support legacy services such as DS1 and
                                        DS3 while being able to offer new data services based
                                        on FE and GE
                                        Ideally would like the solution to support metro DWDM
                                        with incremental upgrades
                                        Required an integrated management system to ease
                                        the pain of provisioning new services and adding more
                                        customers across platforms and technologies
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                            73




                           Company B Facilities-
                           Based Metro Provider
                         • Company B solution:
                                   Chose to build next generation SONET network
                                   based on the multi-service ONS 15454 platform in
                                   the metro rings                                                      FE and GE
                                   The metro rings are connected over the long-haul        Legacy        Access
                                                                                           Services:
                                   backbone using multiple OC48 circuits
                                                                                           DS1, DS3
                                   In this configuration each ONS 15454 is equipped
                                   with multiple DWDM interfaces to support 8 * 2.5                    ONS 15454
                                   Gbps (OC48) for a total of 20 Gbps of ring capacity
                                                                                                       Next-gen
                                   In addition, each ONS 15454 delivers private lines         SONET
                                   support (e.g. DS1 and DS3) as well as ethernet         OC-48 * 8 DWDM
                                   access at FE and GE speeds                               Wavelengths
                                   Motivation to use next-gen SONET: Support multi- ONS 15454        ONS 15454
                                   service in one box, lower operations costs due
                                   partly to small chassis, lower power consumption,
                                   integrated management and scalability options
                                   Future plans: Upgrade to OC192 in the long haul and
                                   the metro, upgrade to 16 wavelengths on the DWDM         ONS 15454
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                            74




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                           Company C National Fiber-Optic Carrier

                             • Company C profile:
                                        National broadband fiber-optic and regional
                                        wireless telecommunications company
                                        Main business:
                                                 Providing customized voice, data, and video
                                                 transport as well as internet services, to
                                                 businesses and consumers
                                                 Provides IP, ATM and frame relay services
                                                 and applications for wholesale and retail
                                                 customers

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.       75




                           Company C National Fiber-Optic Carrier

                             • Company C main issues
                                        Planned to penetrate into a new metro area
                                        Needed to build a scalable and flexible
                                        architecture that would allow it to offer
                                        services quickly while keeping a “pay as you
                                        go” approach
                                        Required to support data as well as TDM
                                        services
                                        Wanted to offer wavelength services as part of
                                        their service offering
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.       76




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                           Company C National Fiber-Optic Carrier
                              ONS 15252
                                                                                                                   ONS 15252
                                                                                      ONS 15201s
                       ONS 15454                                                                                    ONS 15454
                                                                                                   ONS 15201




                                 ONS 15327                                                                     ONS 15327s


                                            • ONS 15252 to pack multiple services on each wavelength
                                              for cost-effective delivery to businesses
                                            • ONS 15201 delivers instant wavelengths to buildings at
                                              the lowest cost per wavelength
                                            • Quick deployment and turn up
                                            • Transport flexibility
                                            • DS-1 to OC-48
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                    77




                           Company D CLEC/ISP


                            • Company D profile:
                                        CLEC with HQ in western US
                                        Main business:
                                                Provides integrated communication services
                                                (voice, Internet access, FR) to businesses in
                                                major metro areas in the country
                                                Delivers local phone service in seven
                                                western states


                      OPT-210
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                           Company D CLEC/ISP

                             • Company D main issues
                                        Wanted to build a data network based on high
                                        speed fiber ring infrastructure they had in multiple
                                        metro areas
                                        Had growing needs to add more users, more
                                        bandwidth and more services
                                        Wanted to be able to scale their data network with
                                        minimum down time and provisioning pains
                                        Ideally would like to be able to scale both in terms
                                        of number of nodes and in speed in the future

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                       79




                           Company D CLEC/ISP
                              • Company D Solution:                                        OC-48
                                                                                              GSR
                                                                                             GSR     GSR
                                                                                                     GSR
                                                                                            POS
                                         Chose to implement two DPT                              DPT
                                                                                                OC-12
                                         applications: ISP internetworking (PoP)
                                         and regional metro IP
                                                                                              GSR
                                                                                              GSR      GSR
                                                                                                       GSR
                                         Motivation to use DPT: quick response
                                         to customers’ demand for more                                  OC-48
                                                                                                           GSR
                                                                                                           GSR
                                                                                               POS       POS
                                         bandwidth, lower management,                                         DPT
                                                                                               OC-12
                                         provisioning and maintenance costs,                            GSR OC-12
                                                                                                        GSR                GSR
                                                                                                                           GSR
                                         offer revenue generating services (e.g.
                                         VPN, DoD, VoIP)                                                                GSR
                                                                                                                        GSR
                                                                                                     GSR
                                                                                                     GSR
                                                                                             GSR
                                                                                             GSR
                                         Future plans: Upgrade to OC48, offer
                                         additional services, expend to other                   DPT
                                                                                               OC-12       GSR
                                                                                                           GSR
                                         metro areas
                                         Customer benefits: Scaleable solution                GSR
                                                                                              GSR                      Cisco
                                         both in terms of future speed upgrades                                        7500
                                         and adding nodes, huge cost savings,                                          Cisco
                                         reliable and resilient network design                                   GSR
                                                                                                                 GSR   12000
                      OPT-210
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                           Company E Community-Owned
                           Metro Core Operator

                               • Company E Profile:
                                           Metro core operator of community-owned
                                           fiber optic ring using fibers that belong to the
                                           state utilities
                                           Main business:
                                                   Provides services to the state utilities such as real-time
                                                   metering, energy management and load control
                                                   Delivers connectivity to rural areas throughout the state
                                                   Interconnects community services throughout the state
                                                   including hospitals, schools, libraries, judicial systems
                                                   and emergency services

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                        81




                           Company E Community-Owned
                           Metro Core Operator

                              • Company E main issues
                                         Needed to support a verity of services: IP,
                                         ethernet (TLS), TDM (T1 to OC3)
                                         Had to build metro core network that would
                                         span across the state with long distances and
                                         connect rural areas to the main backbone
                                         Could use only 4 fibers strands (2 pairs)
                                         throughout the network to support all existing
                                         and future services

                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                        82




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                           Company E Community-Owned
                           Metro Core Operator
                                                 Cisco 12012                                                            Cisco 12012       OC-12 DPT
                                                                                GSR
                                                                                GSR                            GSR
                                                                                                               GSR                        OC-12 DPT
                                                                                                                                         over OC-48
                                                                                                                                          over OC-48
                       Cisco 12012                                                                                                          SONET
                                                                                                                                            SONET
                                                                                                                         ONS 15454 + 15216
                                                                    ONS 15454 + 15216                      ONS 15454 + 15216
                                 GSR
                                 GSR                                                          OC-48 SONET                                 GSR
                                                                                                                                          GSR

                                   ONS 15454 + 15216                                           over DWDM                                 Cisco 12012
                                                                                                                     ONS 15454 + 15216
                                                                                           ONS 15454 + 15216

                                                     Cisco 12012                 GSR
                                                                                 GSR
                                                                                                               GSR
                                                                                                               GSR    Cisco 12012

                             •    DWDM metro core infrastructure based on ONS 15216 + 15454 running
                                  OC-48 SONET
                             •    ONS 15454 deliver TDM (T1-OC-3) access as well as TLS services
                             •    DPT OC-12 with Cisco 12012 running on top of OC48 SONET
                             •    Maximum multi-service flexibility: 12012 with DPT provides IP services, 15454
                                  with SONET provides TDM and TLS services, 15216 provides DWDM scalability
                             •    Multi-layer redundancy, DWDM, SONET and DPT results in high availability;
                                  Critical for metro core
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                           83




                                        Metro Optical Infrastructure
                                                                                                Summary




                      OPT-210
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                           Migrating Your Metro Infrastructure


                                                                                                                         OC-48/STM -16


                                                                                                     Backbone Ring




                                                                                3/3/1 or 4/3/1 Digital Cross Connect
                                                                                3/3/1 or 4/3/1 Digital Cross Connect


                                                                                             Business                Metropolitan
                                                                                               Ring                      Ring




                                                OC-3/STM -1                                                                                     OC-12/STM -4


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                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                                                      85




                           New Metro Infrastructure


                                                                                                                   GSR


                                                                                                                   GSR

                                         DWDM                                                                    Regional                 GSR
                                        Backbone
                                                                                       GSR
                                                                                                                                                                         ?1
                                                                                                                 Metro/IP
                                         Network                                                                                                    ?4
                                                                                                                   GSR
                                                                                                                                                                         ?2
                                                                                                                                                    ?2
                                                                                                                         Me
                                                                                                                         Me




                        OC-3/12/48/192 OC-3/12/48/192                                                                                                               ?4
                                                                                                                           ttro




                        STM-1/4/16/48  STM-1/4/16/48
                                                                                                                             ro//I
                                                                                                             s
                                                                                                            ss




                                                                                                                                                                              ?3
                                                                                                          es




                                                                                                                                                         ?1
                                                                                                                                 IP A
                                                                                                         ce




                        Business Ring Metropolitan Ring
                                                                                                                                   PA




                                                                                                                                                               ?3
                                                                                                       cc
                                                                                                      Ac
                                                                                                   IP A




                                                                                                                                     cc
                                                                                                                                      cce
                                                                                                     P




                                                                                                                                        ess
                                                                                                 o//I




                                                                                                                                          ss
                                                                                             ttrro
                                                                                           Me
                                                                                           Me




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                                                                                      86




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                           Metro Networks Summary

                              • No matter what your network’s starting
                                point, we have solutions to optimize your
                                optical infrastructure
                              • Low initial and lifecycle cost made
                                possible by fewer network elements,
                                efficient bandwidth management and
                                network provisioning
                              • Seamless integration with data and
                                storage solutions to provide rapid,
                                scalable service delivery
                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                     87




                                    Deploying High-Performance
                                    Metro Optical Infrastructures
                                                                                           Session OPT-210




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                     88




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                                                       Please Complete Your
                                                          Evaluation Form
                                                                                           Session OPT-210




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                     89




                      OPT-210
                      3126_05_2001_c1   © 2001, Cisco Systems, Inc. All rights reserved.                     90




Copyright © 2000, Cisco Systems, Inc. All rights reserved. Printed in USA.
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