Building ethernet ip service awareness into ng optical transport networks
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Building Ethernet/IP Service Awareness into NG Optical Transport Networks. Enrique Hernandez-Valencia Lucent Technologies Broadnets, October 2006. Market Trends: Growth of Voice & Data Metro Traffic. Sources: Pyramid Research, March 2006, Pyramid Research, June 2006 + Bell Labs Analysis.

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Building ethernet ip service awareness into ng optical transport networks l.jpg

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 l.jpg
Market Trends: Transport NetworksGrowth 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 & VoiP)

  • Continue growth in broadband business services and Internet traffic driven by P2P applications such as multi-media, audio/music, games and video

Lucent Technologies Proprietary

Use pursuant to company instruction


Slide3 l.jpg

U.S. Business Ethernet Service Forecast Transport Networks

  • 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.

Source Report :IDC, April 2006

Lucent Technologies Proprietary

Use pursuant to company instruction


Market technology trends and network implications l.jpg
Market/Technology Trends Transport Networksand Network Implications

New Revenue Producing Differentiated Services

Blended Lifestyle Apps

Fixed Mobile Convergence

  • Increased IP awareness in mobile network elements

  • Flexible IMS based Service Architecture

Simplified Network Architecture Enabling Converged Services

Near-Term

  • Leverage low cost Ethernet transport & switching

  • Leverage flexible WSS

  • “Flatten” Network L3 capabilities toward the edge

Increased Bandwidth Needs for Multi-Media Services

More efficient, low cost data networking architectures

Mid-Term

  • Consolidate transport functions and minimize Interface types

  • Integrate Optical/Packet Traffic Engineering

  • Secure & controlled access to intelligent net elements

  • Reduce Network Complexity while supporting

    • Security & QoS

    • Scalable Capacity

    • Performance & Reliability

Long-Term

Lucent Technologies Proprietary

Use pursuant to company instruction


Factors impacting long term network architecture evolution l.jpg
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 VoIP, 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 L3 awareness in transport elements (IP awareness)

    • Important to have consistency across transport layers for per-session gate, QoS, 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

Lucent Technologies Proprietary

Use pursuant to company instruction


Optical and data transport networks current architecture services l.jpg

Video Evolution

Voice

Voice

MSE

Metro/Reg Office

Local

Office

MPLS/IP

IP / MPLS

DWDM

OXC

DWDM

Metro Backbone / Regional Metro

Metro Aggregation

Wavelength Services

EoF

Ethernet

SDH / SONET

Switched Ethernet Services

Optical and Data Transport Networks Current Architecture & Services

Using multiple networks for different services is costly and inefficient

  • 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

DSL

DSLAM

Copper Access

SDH

Wireless Backbone

SONET / EoS

TDM & Ethernet PL Services

One network per service type approach is blocking further OPEX & CAPEX reductions

Lucent Technologies Proprietary

Use pursuant to company instruction


Video will redefine ng transport networks l.jpg

IPTV Evolution and Video on Demand (VoD) will redefine the Access and Aggregation network space

VoD/IPTV grow by orders of magnitude over the next 5 years

2005: 90% best-effort data traffic

2010: 40% high-priority VoD traffic 50% best-effort data traffic

Carrier-class links with capacities of 40G and100G required in MAN

Video Will Redefine NG Transport Networks

Source: Bell Labs IPTV/VoD study, May 2006

Service providers need to deploy scaleable, efficient and secure transport networks that enable innovative multimedia services while providing carrier-class performance and manageability

Lucent Technologies Proprietary

Use pursuant to company instruction


Slide8 l.jpg

Implications of Broadband & Triple Play Services on Access/Aggregation Network

  • New Broadband & Multimedia services (IPTV, VoD, VoIP & games) place additional requirements on the SP network infrastructure:

    • Bandwidth scalability: support for real-time broadband applications (i.e., VoD, 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

Lucent Technologies Proprietary

Use pursuant to company instruction


Converged optical data network evolving transport architecture in support of broadband services l.jpg

Metro / Regional Access/Aggregation Network

Office

Metro / Regional

Office

MPLS/IP

DWDM

OXC

Metro

Backbone

Or

Regional

Metro

Converged Optical & Data Network Evolving Transport Architecture in Support of Broadband Services

CMTP converges Wavelength, TDM and Packet services onto a common platform

  • Improved price competitiveness in delivering Regional / Metro Ring Services to enterprises

  • Inter-works with existing network elements

  • 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

MSPP

SONET / EoS

MSPP

MSPP

Optical PL & EPL Services

LER

EoF

Ethernet

LER

LER

E-LAN, TLS & PW

Switched Services

Converged

Multi-service

Transport

Platform

MSTPs

ConvergedMulti-service

Transport

Platform

xWDM

MSTPs

Virtual Fiber

Services

Single transport infrastructure for packet and circuit services

Lucent Technologies Proprietary

Use pursuant to company instruction


Converged multi service transport platforms architectural requirements l.jpg

Packet Control Plane Access/Aggregation Network

Packet Plane

Packet I/O

Packet I/O

Packet Fabric

TDM Control Plane

TDM Plane

System Control

TDM I/O

TDM I/O

TDM Fabric

Optical Control Plane

WDM Plane

cWDM I/O

DWDM I/O

ROADM

Converged Multi-Service Transport PlatformsArchitectural Requirements

Converging WDM, TDM and Packet into a single platform

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


    Converged multi service transport platforms packet attributes l.jpg

    ATM Access/Aggregation Network

    ATM

    FR

    FR

    Ethernet

    Ethernet

    IP

    IP

    Other

    Other

    MPLS

    MPLS

    ATM

    ATM

    POS

    POS

    Ethernet MAC

    Ethernet

    Ethernet

    PHY

    RPR

    RPR

    SDH

    SDH

    DWDM

    DWDM

    FIBRE

    FIBRE

    Converged Multi-Service Transport PlatformsPacket Attributes

    • Packet optimized adaptation for all types of L2 traffic (Ethernet, HDLC, PPP, FR, …) with idle suppression capabilities MPLS Pseudo Wires (IETF PWE3)

    • Data-aware transport with ring/mesh-wide efficient statistical multiplexing for all data services via MPLS forwarding and aggregation

    • IP/MPLS control plane as a common mechanism for A-Z path management that can seamlessly interwork with existing IP/MPLS long-haul networks

    • VCAT, GFP & LCAS to interwork with existing underlying SONET/SDH & OTN networks

    • xDSL/PON, PB/PBB & RPRsupport to interwork with existing underlying Ethernet access networks

    Ethernet/MPLS

    IP/Ethernet

    MPLS

    SONET (EoS)

    WDM / OTN

    ATM/FR

    IP-PBX

    Converged Multi-Service

    Transport Platform

    VoIP/SS

    SONET/SDH ADM

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Role of roadm in ng transport l.jpg

    ROADM Access/Aggregation Network

    Components

    Add/Drop & Thru

    Any l to any port

    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

      • 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 SONET-ADM or Packet-ADM functionalities into ROADM

    DWDM Line System

    1st Gen: Fixed 2-Degree ROADM

    2nd Gen: 4+ Degree ROADM

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Converged multi service transport platforms tdm wdm attributes l.jpg

    ATM Access/Aggregation Network

    ATM

    FR

    FR

    Ethernet

    Ethernet

    IP

    IP

    Other

    Other

    MPLS

    MPLS

    ATM

    ATM

    POS

    POS

    Ethernet MAC

    Ethernet

    Ethernet

    PHY

    RPR

    RPR

    SDH

    SDH

    DWDM

    DWDM

    FIBRE

    FIBRE

    Converged Multi-Service Transport PlatformsTDM/WDM Attributes

    • Multi-degree ROADM (WSS) with

      • 2.5G up to 40G wavelength support

      • Over 40 channels per system

      • Full-band tunable lasers

    • Full integration with OTN and SONET/SDH

      • STS/VT and VC muxing and switching (SONET/SDH/G.707)

      • ODU muxing and switching (OTH/G.709)

    • ASON/GMPLS control plane for automated provisioning & network inventory

    MSPP

    CMTP

    Packet

    OXC

    TDM

    Capability

    DWDM OADM

    MSTP

    cWDM

    WDM

    Kilometers

    0

    300

    100

    600

    1200

    4000

    Metro

    IOF

    Regional

    Ultra

    Long Haul

    Customer

    Prem.

    Metro

    Access

    Long

    Haul

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Evolving beyond legacy transport models from quality of service to quality of experience l.jpg
    Evolving Beyond Legacy Transport Models Access/Aggregation NetworkFrom 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 QoS – VoIP, BB, Video

      • Video applications driving additional growth in network usage

    • Provide automated management, integration and maintenance services

      • Dynamic, continuous session-state, end-to-end QoS

      • Service aware to efficiently manage costs

      • Network QoE: Scale, QoS, Reliability, Resiliency

      • Multi-network, multi-vendor management

      • Legacy Migration, wireless/wireline convergence

    Converged Services Drive QoE Requirements

    IP Video Services

    Wavelength Services

    Carrier Ethernet Services

    Feature Driven

    Storage

    Area

    Networking

    IP Video

    TDM

    Services

    Managed Internet Service

    Long Distance

    Broadband Data

    Local Voice

    Ethernet Services

    Private Line Services

    Premium Video

    VPN Services

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Converged transport networks and itu t next generation networks l.jpg
    Converged Transport Networks and ITU-T Next-Generation Networks

    NGN

    Other

    NGNs

    • ITU-T Y.2001/Y.2011provides 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

    IMS

    Service

    Control Functions

    Non-IMS Service

    Control Functions

    (e.g. VoD)

    RACF

    Wimax

    Metro

    Optical/

    Ethernet

    DSL Access

    IP/MPLS

    Core

    Radio Access

    Network

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    The itu t racf y 2111 architecture l.jpg

    intra- Next-Generation Networks

    domain

    inter-

    domain

    Other NGNs

    The ITU-T RACF (Y.2111) Architecture

    Service Control Functions

    (part of IMS or other)

    Service Stratum

    Rs

    Transport Stratum

    Rp

    Rd

    Policy

    Decision

    Function

    Transport Resource Control

    Function

    Network Attachment Control Functions

    Ru

    Ri

    Rt

    RACF

    Rc

    Rn

    Rw

    Transport

    Enforcement

    Function

    Policy

    Enforcement

    Function

    Transport Functions

    • RACF

    • Augments native transport QoS support

      • Timely preempting traffic during congestion

    • Is applicable to IMS and non-IMS applications (e.g., VoIP and IPTV)

    • Can be deployed edge-to-edge or end-to-end

    • Policy Decision Function

    • Service-facing, transport-independent

    • Transport Resource Control Function

    • Service-independent, transport-dependent, network-segment-specific

    • Policy Enforcement Function

    • typically part of border transport elements

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Key roles of racf and related entities l.jpg
    Key Roles of RACF and Related Entities Next-Generation Networks

    • 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.

    • Transport Resource Control Function

    • Tracks transport resource use and network topology

    • Performs resource-based admission control

    • Policy Enforcement Function

    • Enforces controls applied by PDF

      • Policing

      • Filtering

      • Charging/Metering

      • NAT and NAT Traversal

    • Overall, RACF supports

    • Relative and absolute QoS, including differential priority

    • Endpoints of varied QoS 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

    • Existing and emerging transport QoS mechanisms

    Lucent Technologies Proprietary

    Use pursuant to company instruction


    Next gen transport networks intelligent ethernet ip optimized network strategy l.jpg

    BGW Next-Generation Networks

    Management System

    CMTP

    Mobility Routers

    Bearer GatewayFunctions

    Ethernet/MPLS Routing

    DSL

    PON

    Copper

    Fiber

    Application Aware QoS

    CDMA

    UMTS

    GSM

    Next-Gen Transport Networks Intelligent Ethernet/IP-optimized Network Strategy

    Service Integration

    Non-IMS

    IMS

    RACF

    Service-aware QoS

    IP/MPLS Core

    Ethernet / OpticalMetro

    Optical/Ethernet

    Routers

    Ethernet /MPLS

    Routers

    Intelligent Access

    Ethernet

    Edge

    Access

    Nodes

    • 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 QoS - based on individual applications, user needs

    • Delivers:

      • Simplified, flexible architecture – scalable, reliable designed for QoE

      • 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


    Slide19 l.jpg

    Conclusion Next-Generation Networks

    • 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/QoS 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

    Lucent Technologies Proprietary

    Use pursuant to company instruction


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