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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 3E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 4E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 5E. Hernandez-Valencia Broadnets, Oct. 2006
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 Slide 6E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 7E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 8E. Hernandez-Valencia Broadnets, Oct. 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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 9E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 10E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 11E. Hernandez-Valencia Broadnets, Oct. 2006
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
ATM FR Ethernet IP Other
Ethernet PHY
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 12E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 13E. Hernandez-Valencia Broadnets, Oct. 2006
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
ATM FR Ethernet IP Other
FIBRE
DWDM
SDH
ATM POS
RPR
Ethernet MAC
MPLS
ATM FR Ethernet IP Other
Ethernet PHY
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 14E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 15E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 16E. Hernandez-Valencia Broadnets, Oct. 2006
The ITU-T RACF (Y.2111) Architecture
Rs
Rw
Service Stratum
Transport Functions
PolicyDecisionFunction
PolicyDecisionFunction
Transport Resource Control
Function
Transport Resource Control
Function RACF
Transport Stratum
Service Control Functions(part of IMS or other)(part of IMS or other)
Service Control Functions(part of IMS or other)(part of IMS or other)
Rt
RdRp
Rc
Rn
Ru Ri
TransportEnforcement
Function
TransportEnforcement
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 17E. Hernandez-Valencia Broadnets, Oct. 2006
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
PolicyDecisionFunction
Transport Resource Control
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
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 18E. Hernandez-Valencia Broadnets, Oct. 2006
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
Lucent Technologies Proprietary
Use pursuant to company instruction Slide 19E. Hernandez-Valencia Broadnets, Oct. 2006
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
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