Building Ethernet/IP Service Awareness into NG Optical Transport Networks Enrique Hernandez-Valencia Lucent Technologies Broadnets, October 2006 Lucent Technologies Proprietary Use pursuant to company instruction
Market Trends: Growth of Voice & Data Metro Traffic Sources: Pyramid Research, March 2006, Pyramid Research, June 2006 + Bell Labs Analysis Sources: IDC, September 2005, Ovum RHK, December 2005 + Bell Labs Analysis § Increased demand for wireless voice services tempered by decline in voice bandwidth driven by shift to compressed audio (mobility & Voi. P) § Continue growth in broadband business services and Internet traffic driven by P 2 P applications such as multi-media, audio/music, games and video E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 2
U. S. Business Ethernet Service Forecast The U. S. market for Ethernet services is growing at a healthy pace § IDC predicts that the U. S. market for Ethernet services will grow to $2. 7 billion in 2010, a compound annual growth rate (CAGR) of 33. 8%. Ethernet is replacing other Layer 2 services and private lines § Service Providers are investing in Ethernet connectivity services, upgrading infrastructure to carrier grade, with improved Quality of Service and associated SLAs. E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction Source Report : IDC, April 2006 3
Near-Term • Increased IP awareness in mobile network elements • Flexible IMS based Service Architecture Mid-Term Increased Bandwidth Needs for Multi-Media Services More efficient, low cost data networking architectures • Leverage low cost Ethernet transport & switching • Leverage flexible WSS • “Flatten” Network L 3 capabilities toward the edge Reduce Network Complexity while supporting • Security & Qo. S • Scalable Capacity • Performance & Reliability • Consolidate transport functions and minimize Interface types • Integrate Optical/Packet Traffic Engineering • Secure & controlled access to intelligent net elements E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction Simplified Network Architecture Enabling Converged Services New Revenue Producing Differentiated Services Blended Lifestyle Apps Fixed Mobile Convergence Long-Term Market/Technology Trends and Network Implications 4
Factors Impacting Long Term Network Architecture Evolution § Network Operators drive for simpler transport network infrastructure – Ethernet as convergence layer for packet access & transport services – Synergistic with introduction of Business Ethernet services § End-user Services shift from Internet Access & VPN to Vo. IP, Multimedia, and Peer-to-Peer apps – Driving convergence of wireless & wireline transport infrastructure – IP traffic will have an increasingly localized component § Blended/Bundled Business & Lifestyle services emerge as key features to SP differentiation – Increased L 3 awareness in transport elements (IP awareness) – Important to have consistency across transport layers for per-session gate, Qo. S, and bandwidth control § Compound growth from rising broadband subscriber base, service take, and bandwidth per session – Drives need for more transport capacity – Drives need for more efficient transport and processing network elements Drive towards consolidation of service functions at the edge, localized switching, and high capacity switched IP/Ethernet transport E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 5
Optical and Data Transport Networks Current Architecture & Services Local Office Metro/Reg Office Voice. Video MSE Voice DSL MPLS/IP Using multiple networks for different services is costly and inefficient DSLAM Copper Access IP / MPLS DWDM SDH / SONET DWDM SDH O X C Metro Backbone / Regional Metro Aggregation Wireless Backbone SONET / Eo. S Eo. F Wavelength Services Ethernet TDM & Ethernet PL Services Switched Ethernet Services § Results in higher costs for delivering Regional / Metro Ring Services to enterprises § Complex service provisioning via various network layers § Stranded bandwidth across multiple layers of interconnect § Expensive network maintenance and spare stocks One network per service type approach is blocking further OPEX & CAPEX reductions E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 6
Video Will Redefine NG Transport Networks IPTV and Video on Demand (Vo. D) will redefine the Access and Aggregation network space § Vo. D/IPTV grow by orders of magnitude over the next 5 years § 2005: 90% best-effort data traffic Source: Bell Labs IPTV/Vo. D study, May 2006 § 2010: 40% high-priority Vo. D traffic 50% best-effort data traffic § Carrier-class links with capacities of 40 G and 100 G required in MAN Service providers need to deploy scaleable, efficient and secure transport networks that enable innovative multimedia services while providing carrier-class performance and manageability E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 7
Implications of Broadband & Triple Play Services on Access/Aggregation Network New Broadband & Multimedia services (IPTV, Vo. D, Vo. IP & games) place additional requirements on the SP network infrastructure: § Bandwidth scalability: support for real-time broadband applications (i. e. , Vo. D, Gaming) § High availability: short restoration, no general outages § Service differentiation: latency, jitter, packet loss in SLAs § Resource management: granular bwd, traffic engineering, resource management & reservation in support of SLAs Carriers have made a strategic decision that their next-gen feeder/aggregation infrastructure will be Ethernet-based: § Yet, “Best Effort” forwarding model will not meet carrier requirements for scalability, quality, and OPEX/CAPEX § Transport network must support a superior IP-aware Quality of Experience to attract and retain customers E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 8
Converged Optical & Data Network Evolving Transport Architecture in Support of Broadband Services MSPP SONET / Eo. S Metro / Regional Office MSPP Optical PL & EPL Services § Improved price competitiveness in delivering Regional / Metro Ring Services to enterprises MPLS/IP LER § Inter-works with existing network elements Eo. F Ethernet LER DWDM LER O X C E-LAN, TLS & PW Switched Services MSTPs x. WDM MSTPs Converged Multi-service Transport Platform Metro Backbone Or Regional Metro CMTP converges Wavelength, TDM and Packet services onto a common platform Converged Multi-service Transport Platform § Enabled Network evolution with tight integration to ITU NGN models § Drastically reduces equipment needs in Metro & Regional Hub offices § Minimizing spare stock & network maintenance efforts Single transport infrastructure for packet and circuit services Virtual Fiber Services E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 9
Converged Multi-Service Transport Platforms Architectural Requirements System Control Packet Plane P a c k et I/ O TDM Plane T D M I/ O WDM Plane c W D M I/ O E. Hernandez-Valencia Broadnets, Oct. 2006 P a c k e t C o n Pa t cke r t o Fa T l bri D P c M l C a o n nt e O ro TD p l M t Pl Fa i a bri c n c a e l C o n R t O r A o D l M P l a n e Converging WDM, TDM and Packet into a single platform P a c k et I/ O T D M I/ O D W D M I/ O Separated Planes for TDM & Packet & WDM – Optimized architecture for each network plane – Optimized switches & I/O packs for each plane Flexible/cost optimized hybrid configurations – Unrestricted usage of each plane as needed – Full system bandwidth utilization & scalability – Dedicated interconnection units using regular I/O slots following strict “plug and pay what you need” paradigm Complexity Reduction, Reliability Increase – Cross plane system control providing single or segregated node view – Independent subsystems with well defined interfaces – Easy operational concept following clean layering model Lucent Technologies Proprietary Use pursuant to company instruction 10
Converged Multi-Service Transport Platforms Packet Attributes § Packet optimized adaptation for all types of L 2 traffic (Ethernet, HDLC, PPP, FR, …) with idle suppression capabilities MPLS Pseudo Wires (IETF PWE 3) § Data-aware transport with ring/mesh- ATM POS SDH interwork with existing underlying Ethernet access networks E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction Other Ethernet MAC Ethernet RPR Ethernet PHY FIBRE IP/Ethernet MPLS § VCAT, GFP & LCAS to interwork with § x. DSL/PON, PB/PBB & RPR support to IP DWDM § IP/MPLS control plane as a common existing underlying SONET/SDH & OTN networks Ethernet MPLS wide efficient statistical multiplexing for all data services via MPLS forwarding and aggregation mechanism for A-Z path management that can seamlessly interwork with existing IP/MPLS long-haul networks FR Ethernet/MPLS SONET (Eo. S) WDM / OTN ATM/FR IP-PBX Vo. IP/SS SONET/S DH ADM Converged Multi-Service Transport Platform 11
Role of ROADM in NG Transport OA Network operators are finally adopting Reconfigurable Optical Add/Drop Multiplexers (ROADMs) technology § Multiply fiber capacity through wavelength division multiplexing (WDM), § Enhance network flexibility with remotely reconfigurable optical add/drop DWDM Line System § Reduce transport network capital and operation expenses by using optical bypass when optimally deployed § First generation ROADMs were degree-2 network elements (NEs) and supported linear chain and ring architectures. § Next ROADM generations has 4 or higher degrees allowing a flexible ring/meshed network topology § Hybrid Network Elements (NE’s) integrating SONETADM or Packet-ADM functionalities into ROADM E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 1 st Gen: Fixed 2 -Degree ROADM Components Add/Drop & Thru Any l to any port 2 nd Gen: 4+ Degree ROADM 12
Converged Multi-Service Transport Platforms TDM/WDM Attributes § Multi-degree ROADM (WSS) with ATM – 2. 5 G up to 40 G wavelength support – Over 40 channels per system – Full-band tunable lasers FR Ethernet IP Other MPLS ATM POS § Full integration with OTN and SONET/SDH Ethernet MAC Ethernet RPR PHY SDH – STS/VT and VC muxing and switching (SONET/SDH/G. 707) – ODU muxing and switching (OTH/G. 709) DWDM FIBRE § ASON/GMPLS control plane for automated provisioning & network inventory Capability Packet TDM WDM c. WDM 0 Customer Prem. E. Hernandez-Valencia Broadnets, Oct. 2006 CMTPOXC MSPP 100 Metro Access DWDM OADM MSTP 300 Metro IOF 600 Regional Lucent Technologies Proprietary Use pursuant to company instruction 1200 Long Haul Kilometers 4000 Ultra Long Haul 13
Evolving Beyond Legacy Transport Models From Quality of Service to Quality of Experience Support Converged Services on a Massive Scale • Efficient routing, flexible service delivery across multiple access technologies • Service Aware Qo. S – Vo. IP, BB, Video • Video applications driving additional growth in network usage Converged Services Drive Qo. E Requirements Provide automated management, integration and maintenance services • Dynamic, continuous session-state, end-to-end Qo. S • Service aware to efficiently manage costs • Network Qo. E: Scale, Qo. S, Reliability, Resiliency • Multi-network, multi-vendor management • Legacy Migration, wireless/wireline convergence E. Hernandez-Valencia Broadnets, Oct. 2006 IP Video Services Wavelength Services Carrier Ethernet Services TDM Services Feature Driven Storage IP Video Area Networking Managed Internet Long Broadband Distance Service Data Local Private Ethernet Premium Voice Services Line Video VPN Services Lucent Technologies Proprietary Use pursuant to company instruction 14
Converged Transport Networks and ITU-T Next-Generation Networks NGN IMS Service Control Functions Non-IMS Service Control Functions (e. g. Vo. D) Other NGNs RACF Wimax DSL Access Radio Access Network Metro Optical/ Ethernet IP/MPLS Core ITU-T Y. 2001/Y. 2011 provides a framework for NG IP-Aware transport networks RACF is a functional component of the NGN architecture that enables real-time, session based resource control for a variety of services and a variety of networking technologies – Keeps services technology-independent – Keeps the network service-independent E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 15
The ITU-T RACF (Y. 2111) Architecture Service Control Functions (part of IMS or other) Service Stratum Network Attachment Control Functions intradomain interdomain Rp Rd Transport Resource Control Function Ru Rt Ri RACF Rc Rn Rw Transport Enforcement Function Transport Functions Policy Enforcement Function RACF Policy Decision Function § Service-facing, transport-independent § Augments native transport Qo. S support Transport Resource Control Function § Service-independent, transport-dependent, network-segment-specific Policy Enforcement Function § typically part of border transport elements E. Hernandez-Valencia Broadnets, Oct. 2006 Policy Decision Function Other NGNs Rs Transport Stratum – Timely preempting traffic during congestion § Is applicable to IMS and non-IMS applications (e. g. , Vo. IP and IPTV) § Can be deployed edge-to-edge or end-to-end Lucent Technologies Proprietary Use pursuant to company instruction 16
Key Roles of RACF and Related Entities Policy Decision Function § Makes the overall admission decision based on policy and resource availability (including path and enforcement point selection) § Applies resource controls to the transport for bandwidth allocation, packet marking, gating, NAPT, etc. • Endpoints of varied Qo. S control capabilities • Push and pull models for policy installation Multiple transaction models for resource requests Various resource management methods based on accounting, measurement and reservation • § Performs resource-based admission control Relative and absolute Qo. S, including differential priority • § Tracks transport resource use and network topology • • Transport Resource Control Function Policy Enforcement Function Overall, RACF supports Existing and emerging transport Qo. S mechanisms § Enforces controls applied by PDF – – Policing Filtering Charging/Metering NAT and NAT Traversal E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 17
Next-Gen Transport Networks Intelligent Ethernet/IP-optimized Network Strategy Service Integration IMS RACF IP/MPLS Core BGW Ethernet /MPLS Routers Bearer Gateway Functions Ethernet/MPLS Routing Service-aware Qo. S Ethernet Edge Copper Fiber Ethernet / Optical Metro CMTP Optical/Ethernet Routers Intelligent Access DSL Access Nodes Mobility Routers PON Application Aware Qo. S Converged MS Transport Architecture • Integrated Ethernet/Optical Metro - reduced network complexity and costs • Service Intelligent Access - efficient routing, flexible service delivery across multiple access technologies • Policy Based Service Aware Qo. S - based on individual applications, user needs E. Hernandez-Valencia Broadnets, Oct. 2006 Management System Non-IMS UMTS GSM CDMA Delivers: – Simplified, flexible architecture – scalable, reliable designed for Qo. E – Ultimate user experience - seamless and secure management across multiple devices & networks – Innovative blended services with IMS – Flexible network integration for investment protection Lucent Technologies Proprietary Use pursuant to company instruction 18
Conclusion An intelligent optical/packet optimized network enables: § Fewer network elements and layers via an integrated Carrier Ethernet/Optical Metro Core § Service intelligent access for efficient routing and service activation across multiple access technologies § Policy-based bandwidth/Qo. S control spanning entire network, based on individual applications and user needs/SLAs § Support of a superior Quality of Experience to attract and retain customers A simplified, flexible converged network infrastructure enabling providers to deliver profitable Next Gen blended services E. Hernandez-Valencia Broadnets, Oct. 2006 Lucent Technologies Proprietary Use pursuant to company instruction 19
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