Efficient Integrated Backbone (EIBONE) - Multi-Layer Transport - - PDF document

Efficient Integrated Backbone (EIBONE) - Multi-Layer Transport Networks with Integrated Control

Achim Autenrieth, Nokia Siemens Networks

Achim Autenrieth / Efficient Integrated Backbone (EIBONE) / EuroView2008, 21.7.2008 2

Disclaimer and Acknowledgment

The work presented here is a joint effort from the partners of the German funded research project EIBONE The common view and key results of EIBONE are summarized in Position papers / Whitepapers:

• Gerd Eilenberger et al: “Multi-Layer Transport Networks with Integrated

Control”, ITG Fachtagung Photonische Netze, 28. - 29.04.2008, Leipzig

• P. M. Krummrich et al.: "EIBONE working group transmission

technologies - white paper 100 Gbit/s Ethernet", VDE Studien und Reports, April 2008, www.vde.com.

Multi-Layer Transport Networks with Integrated Control

Positionspapier des EIBONE Arbeitskreises “Netze und Referenznetze“

Kontakt: Gert Eilenberger, Alcatel Lucent Bell Labs Deutschland

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Agenda

Project Overview Introduction – Importance of transport networks Evolution of transport networks Network architectures and concepts Network control and management Traffic models, traffic evolution, user behaviour Network planning/optimisation, techno-economic studies Implementation aspects Transmission technologies for 100Gbit/s Common View about the future transport networks Current state of art in EIBONE

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Motivation

• Heterogenity and complexity of networks
• Increasing bandwidth demands
• Not optimized scalability of IP transport

networks

• Separated definition of IP, Ethernet and

transport networks Motivation

• Heterogenity and complexity of networks
• Increasing bandwidth demands
• Not optimized scalability of IP transport

networks

• Separated definition of IP, Ethernet and

transport networks

BMBF Research Framework EIBONE – Efficient Integrated Backbone

Key Research Objectives

• Cost-efficient, flexible and robust core

and metro networks

• Scalable and secure network

architecures for the future Internet using

• ptical technologies and Layer 2
• Hardware- and software prototypes

for demonstration and field trials Key Research Objectives

• Cost-efficient, flexible and robust core

and metro networks

• Scalable and secure network

architecures for the future Internet using

• ptical technologies and Layer 2
• Hardware- and software prototypes

for demonstration and field trials Research Framework EIBONE

• Size: 18 projects; 9 companies including 5

SMBs, 2 research institutes, 4 universities Effort: ~ 32.7 Mio. € Grant: ~ 17.8 Mio. €

• Duration: 3 years (Sep. 2005 – Aug. 2008)
• Consortium Lead:

Nokia Siemens Networks, DTAG Research Framework EIBONE

• Size: 18 projects; 9 companies including 5

SMBs, 2 research institutes, 4 universities Effort: ~ 32.7 Mio. € Grant: ~ 17.8 Mio. €

• Duration: 3 years (Sep. 2005 – Aug. 2008)
• Consortium Lead:

Nokia Siemens Networks, DTAG

Operator A Metro Core Operator B Core Metro

End-to-End Quality-of-Service

Service Control Layer Service Control Layer Multi-Service Access Multi-Service Access

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EIBONE Partners

System vendors and network operators Measurement devices, Components and Subsystems Network planning and simulation Research institutes and Universities

Universität Dortmund

Universities as sub-contractors

Working groups

• all Partners -

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EIBONE Workgroups / Study Groups

Topology Traffic matrix

Workgroup Reference Networks

Definies realistic network topologies and traffic data to allow comparable network studies Contact: Ralf Hülsermann (ralf.huelsermann@t-systems.com)

IP-based Network Architecture

[Mbit/s] Productivity Email, Video conferencing

Traffic Growth IP OTN IP L2 OTN L2-based Network Architecture

Workgroup Network Architectures

Studies and evaluates network architectures for efficient multilayer transport networks Contact: Dr. Gert Eilenberger (gert.eilenberger@alcatel-lucent.de)

Transmission experiments System experiments Components and Modules

SCR0 ..... SCR1 SCRn DGD 2 ... ... DGD n DGD 1 error correction receiver TX RX UFEC TX RX UFEC transmitter . . . . . . FEC Frames time bursts w. scrambling FEC Frames time bursts FEC Frames time bursts w. scrambling B E R FEC Frames

• utage

time w/o. scrambling FEC Frames

• utage

time FEC Frames

• utage

time w/o. scrambling B E R

Workgroup Transmission Technologies

Defines concepts and studies technologies for robust optical transmission Contact: Dr. Peter Krummrich (peter.krummrich@udo.de)

Cooperation of Partners in EIBONE Research Framework

Result: Positioning Papers for common understanding of German instudies and reseach

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Optical Transport

Service Access IP/Aggregation Edge Core Aggregation

Routing BRAS 3P-PE CIS PE

Application

IMS CIS

Customer IP Service

3Play VDSL CES

Customer Ethernet Service

COS

Customer Optical Service DSLAM

IP Edge DWDM Core 3Play FTTH

Access Switch PBB-TE / PBB

IP/MPLS Core Carrier Ethernet Transport

PBB-TE / PBB

DWDM Metro Optical Transport

Service Access IP/Aggregation Edge Core Aggregation

Routing BRAS 3P-PE CIS PE

Application

IMS IMS CIS

Customer IP Service

3Play VDSL CES

Customer Ethernet Service

COS

Customer Optical Service DSLAM

IP Edge DWDM Core 3Play FTTH

Access Switch PBB-TE / PBB

IP/MPLS Core Carrier Ethernet Transport

PBB-TE / PBB

DWDM Metro

Introduction – Importance of Transport Networks

• Backbone of the communication infrastructure
• Basis for services and applications in the internet,

in mobile and corporate networks. Cost efficiency Robustness

• Innovative end-user applications with high data volumes
• Faster (optical) access networks for residential customers

CAGR of traffic: ≈ 100% Multi-layer transport networks with integrated Control Plane

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Evolution of transport networks

Transport network evolution driven by convergence of traditionally separated packet and circuit technologies - multilayer network design

• IP-based services prevailing
• Ethernet/L2 technologies compete

with established packet and circuit technologies – but not proven yet

• SDH/OTN/optical technologies
• cost efficient transport pipes

Optical transport remains key

• Enabling further decline of transport cost
• Upgrade from 10 40 Gbit/s happening, 100+ Gbit/s in development
• Optical transport stretching from core to aggregation and access (FTTx),

gradually substituting existing copper infrastructure novel architectural concepts and network design possible supports virtually unlimited bandwidth delivered to the end user

1992 1994 1996 1998 2000 20000 40000 60000 80000 100000

$ per Gbit/s/km Year

Fit: -40% p.a. Decline of longhaul transport cost

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Network Architectures and Concepts

Scope Reduce overall cost and increase network efficiency in WAN and MAN Promising Solution One converged network for all fixed and mobile services introducing

• low cost and flexible switching on

intermediate convergence layer (L2)

• optical bypass for 100M..10G connections

Potential Savings on L2/L3 resources

• optical bypass for 100M..10G connections

(avoid OEO conversions & packet processing)

• studies show up to 35% savings in the backbone

and up to 70% savings in the metro space

Perspective

• Switches/Routers with hundreds of Gbps are required soon at reasonable cost
• 10G/40G technologies only for mid-term, further driving the100G standard
• More studies needed on service integration and network convergence topics

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Network control and management

Apply GMPLS and extensions for Control Plane

• f multi-layer transport networks
• Single control instance for L1-L2-L3
• Automated and optimized usage of resources
• Increase utilization of networks
• Allow flexible and fast reconfiguration
• Decrease operation cost by automation and integration
• End-to-end QoS in multi-domain, multi-operator and

multi-layer environment

• Multi-layer resilience capabilities

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Traffic Models, Traffic Evolution, User Behavior

Change of traffic characteristics

• Increase of user access bandwidth
• Growth of traffic ~100% per year
• Emergence of new services
• Change of user behavior

Traffic models and predictions

• Required for network operation and planning
• Reflection of real traffic characteristics
• High accuracy desired

Comparison and adjustment with measured data

Conclusions

• Increase of highly dynamic IP traffic

Support of dynamic traffic by layer 2

• Ample traffic predictions for about 3 – 5 years
• Long term predictions difficult

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Network Planning

System Model Optimization Model Mathematical Model Optimization

• Detailed XML-specification

(hardware down to media, cost, demand, network)

• Traffic demands based on

DFN measurements

• 3 reference networks
• Specific planning use-cases
• Architecture decisions
• Link/node capacity planning
• (Dynamic) reconfiguration
• Mixed-integer programming
• Exact methods providing

quality guarantees

• Fast heuristic methods

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Implementation aspects

All optical networking still in far future

• Key functions (3R, memory, signal processing) still

not yet available at industrial level of maturity

• Optical transparency is an option for pt-pt links (only

limited number of hops possible)

Future nodes will be packet based

• Scalability issues with L3 packet processing
• L1-L2 solutions will enable multi-terabit nodes
• Optimized functional distribution over L1-L2-L3
• New switching granularity for terabit networks
• Flexible, programmable hardware (service agnostic)

100G networking raising new challenges

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Transmission Technologies for 100Gb/s

EIBONE Whitepaper Overview

• Current state of standardization
• Concepts and implementation
• ptions
• Modulation formats
• Equalization, compensation, and

mitigation of signal distortions

• Opto-electrical components
• Overview of transmission

experience

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Concepts and implementation options

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Modulation formats

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Summary – Key Messages

Continuously growing Internet traffic requires evolution

• f transport networks

Legacy SDH/SONET and IP backbone networks will converge on a single packet transport platform EIBONE provides cost optimized, high quality multi- layer transport platform Analysis and modeling of service and traffic profiles justify EIBONE transport network solutions Advanced modulations schemes allow transmission of 100Gb/s in existing DWDM network infrastructures

Thank you for your attention!

Achim Autenrieth Nokia Siemens Networks achim.autenrieth@nsn.com