optical-packet-net-convergence-ehernandez-broadnets 2006.ppt

Lucent Technologies ProprietaryUse pursuant to company instruction

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 Slide 2E. Hernandez-Valencia Broadnets, Oct. 2006

Market Trends:Growth of Voice & Data Metro Traffic

Sources: Pyramid Research, March 2006, Pyramid Research, June 2006 + Bell Labs Analysis

2004 2005 2006 2007 2008 2009 2010 20110

5

10

15

20

25

30

35

Ag

gre

gat

e T

raff

ic [

Tb

/s]

Data Traffic in Metro Core (US Market)Consumers & Business

2004 2005 2006 2007 2008 2009 2010 20110.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

Ag

gre

gat

e T

raff

ic [

Tb

/s]

Voice Traffic in Metro Core (US Market)PSTN & VoIP & Mobile

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



Source Report :IDC, April 2006

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%.

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.

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.

U.S. Business Ethernet Service Forecast



Market/Technology Trendsand 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

Increased Bandwidth Needs for Multi-Media Services

More efficient, low cost data networking architectures

Sim

plified

Netw

ork A

rchitectu

re E

nab

ling

Co

nverg

ed S

ervicesS

imp

lified N

etwo

rk Arch

itecture

En

ablin

g C

on

verged

Services

• Leverage low cost Ethernet transport & switching

• Leverage flexible WSS• “Flatten” Network L3

capabilities toward the edge

Nea

r-T

erm

Mid

-Ter

m

Reduce Network Complexity while supporting

• Security & QoS• Scalable Capacity• Performance & Reliability

• Consolidate transport functions and minimize Interface types

• Integrate Optical/Packet Traffic Engineering

• Secure & controlled access to intelligent net elements

Lo

ng

-Ter

m



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



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

Copper Access

DSL

DSLAM

SDH

SONET / EoS

TDM & Ethernet PL Services

DWDM

Metro Backbone / Regional Metro

MPLS/IP

OXC

Wavelength Services

DWDM

Metro Aggregation

SDH / SONET

IP / MPLS

Metro/Reg Office

VoiceVideo MSE

LocalOffice

Voice

Switched Ethernet Services

Ethernet

EoF

Wireless Backbone

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



Video Will Redefine NG Transport Networks

IPTV 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

Service providers need to deploy scaleable, efficient and secure transport networks that enable innovative multimedia services while

providing carrier-class performance and manageability

Source: Bell Labs IPTV/VoD study, May 2006



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



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

DWDM

Metro Backbone

Or Regional

Metro

MPLS/IP

OXC

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

SONET / EoS

Optical PL & EPL Services

MSPP

MSPP

MSPP

EthernetEoF

LER

LER LER

Virtual Fiber Services

xWDM

Metro / Regional

Office

ConvergedMulti-service

TransportPlatform

Metro / Regional

Office

ConvergedMulti-service

TransportPlatform

MSTPs

MSTPs

Single transport infrastructure for packet and circuit services

E-LAN, TLS & PWSwitched Services



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

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

Sy

ste

m C

on

tro

l

Packet Fabric

TDM Fabric

TDM I/O

Packet I/O

Packet I/O

TDM I/O

DWDM I/O

cWDM I/O

ROADM

Packet Plane

TDM Plane

WDM Plane

Packet Control Plane

TDM Control Plane

Optical Control Plane



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 & RPR support to interwork with existing underlying Ethernet access networks

IP-PBX

ATM/FR

VoIP/SS

SONET/SDH ADM

Converged Multi-Service

Transport Platform

IP/Ethernet MPLS

WDM / OTNSONET (EoS)

Ethernet/MPLS

FIBRE

DWDM

SDH

ATM POS

RPR

Ethernet

MPLS

ATM FR Ethernet IP Other

FIBRE

DWDM

SDH

ATM POS

RPR

Ethernet MAC

MPLS


Ethernet PHY



Role of ROADM in NG TransportNetwork 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

ROADMROADM Components

Add/Drop & Thru

Any to any port

ROADMROADM Components

Add/Drop & Thru

Any to any port

DWDM Line System

1st Gen: Fixed 2-Degree ROADM

OA

2nd Gen: 4+ Degree ROADM



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

Kilometers

WDM

TDM

Packet

Customer Prem.

Metro Access

Metro IOF

Regional LongHaul

UltraLong Haul

MSTP

0 100 300 600 1200 4000

Cap

ab

ilit

y

DWDM OADM

MSPP

cWDM

OXCCMTP

FIBRE

DWDM

SDH

ATM POS

RPR

Ethernet

MPLS


FIBRE

DWDM

SDH

ATM POS

RPR

Ethernet MAC

MPLS


Ethernet PHY



Evolving Beyond Legacy Transport ModelsFrom Quality of Service to Quality of Experience

Broadband DataLocal

Voice

StorageArea

Networking

Carrier Ethernet Services

Wavelength Services

IP Video Services

Managed Internet Service

Feature Driven

Long Distance

Premium Video

Converged Services Drive QoE Requirements

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

TDMServices

Ethernet ServicesPrivate

Line Services VPN Services

IP Video



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

NGN

RACF

IMSService

Control Functions

Non-IMS Service Control Functions

(e.g. VoD)

Converged Transport Networks and ITU-T Next-Generation Networks

Radio AccessNetwork

DSL Access

Wimax

IP/MPLS Core

MetroOptical/Ethernet

OtherNGNs



The ITU-T RACF (Y.2111) Architecture

Rs

Rw

Service Stratum

Transport Functions

PolicyDecisionFunction


Transport Resource Control

Function


Function RACF

Transport Stratum

Service Control Functions(part of IMS or other)(part of IMS or other)


Rt

RdRp

Rc

Rn

Ru Ri

TransportEnforcement

Function


Function

PolicyEnforcement

Function

PolicyEnforcement

Function

Network Attachment Control Functions

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

intra-intra-domaindomain

inter-inter-domaindomain

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

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

Oth

er NG

Ns



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.

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

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

Rs

Rw

Service Stratum

Transport Functions



Function RACF

Transport Stratum


Rt

RdRp

Rc

Rn

Ru Ri


Function

PolicyEnforcement

Function

Network Attachment Control Functions

intraintra--domaindomain

interinter--domaindomain

intraintra--domaindomain

interinter--domaindomain

(See Y.(See Y.racfracf))

Oth

er NG

Ns

Oth

er NG

Ns



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

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

Ma

na

ge

me

nt

Sy

ste

m

IMS

PONPONDSLDSL

Non-IMS

RACFRACF

CDMACDMA

FiberFiber

Ethernet / OpticalMetro

Intelligent Access

IP/MPLS Core

Service-aware QoS

Bearer GatewayFunctions

Ethernet/MPLS Routing

Application Aware QoS

Service IntegrationService Integration

Access Access NodesNodes

CMTPCMTPCMTPCMTP

BGWBGWBGWBGW

CopperCopper

GSMGSM

UMTSUMTS

Mobility Mobility RoutersRouters

Mobility Mobility RoutersRouters

Ethernet Ethernet Edge Edge

Ethernet /MPLSEthernet /MPLSRoutersRouters

Optical/Ethernet Optical/Ethernet RoutersRouters



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/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

optical-packet-net-convergence-ehernandez-broadnets 2006.ppt

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