NOBEL Technical Audit WP8 Objectives & Achievements March 8 th, 2006 Workpackage 8 Integrated test bed and related experimental activities Carlo Cavazzoni

NOBEL Technical Audit WP8 Objectives &

Achievements March 8th, 2006

Workpackage 8

Integrated test bed and related experimental activities

Carlo Cavazzoni

2Consortuim Confidential

Summary

Introduction

Test Beds and experimental results

Conclusion


Summary

Introduction


Conclusion


To define requirements, architecture and solutions for core-metro IP-over-optical networks for broadband end-to-end services

To study advanced network functionalities such as multi-layer traffic engineering and multi-layer resilience

To make techno- and socio-economic analysis of core and metro case-studies

To find packet/burst switching techniques and technologies

To discover innovative solutions for the three network planes: management, control and transmission

To define multi-service/multi-layer node architectures and to prototype the implementation of some selected node functionalities

To assess of existing technologies, components and sub-systems

To integrate some test beds where to validate the project results

WP8

Nobel Objectives


To integrate in laboratory test beds equipment, subsystems and emulators realised in other WPs and leveraging existing test bed(s) previously developed

To realise integrated experiments on the advanced functionalities defined, specified and developed in the other WPs (e.g. intra- and inter-domain ASON/GMPLS advanced functionalities including also transmission aspects, multi-layer resilience strategies in a multi-domain environment, management and control, multi/service nodes, etc.)

To study the feasibility of an integrated field trial for example interconnecting (already existing, or under development) test beds with the NOBEL test bed.

WP8 Objectives


A8.1 - Equipment, subsystems and emulators integration

D7 - Feasibility analysis of an integrated field trial

WP8 Deliverables

A8.2 - Experiments’ realization

A8.3 - Feasibility study of a field trial

project months19 20 21 22 23 2410 11 12 13 14 15 16 17 181 2 3 4 5 6 7 8 9

D14 - Identification and design of test bed experiments

D35 - Final test bed integration and experimental results

D22 - Preliminary integration and experimental results


Summary

Introduction


Conclusion


NOBEL test beds and experiments

Control Plane performance experiments GMPLS provisioning on all-optical ring-based

MAN for SLA verification GMPLS fault management on all-optical ring-

based MAN for SLA verification GMPLS performance and scalability Protection and restoration schemes

Transmission experiments Experimental results on 21.5 Gbaud (43 Gb/s)

RZ-DQPSK interface prototypes Performance of transport elements PMD mitigation of 40-Gb/s CSRZ transmission

over 820 km

Interworking and traffic measurements Interconnection of broadband access and

metro networks – VPLS implementation Traffic measurements in real user end-to-end

multi-service test bed

TILABTelefonica

Lucent

Acreo

CTTC

Marconi

Control plane functional interoperability Multi-layer soft-permanent and switched

connections Multi-layer, multi-domain virtual soft-permanent

connections


Summary

Introduction


– Transmission experiments

– Control plane functional interoperability

– Control Plane performance experiments

– Interworking and traffic measurements

Conclusion


43Gb/s RZ-DQPSK (WP6 prototypes) Motivation

Why 43 Gb/s RZ-DQPSK?

Suitable for long haul transmission in typical terrestrial networks (80 km spans with no Raman-amplification)

Allows upgrade of existing 10 Gb/s systems w/o change of infrastructure

Less sensitive to chromatic dispersion and non-linearities than conventional modulation formats as e.g. NRZ, RZ at 40 Gb/s

Less sensitive to PMD than other modulation formats as e.g. Optical Duobinary (ODB)

Objectives:

Performance verification

Investigation of impact of nonlinear phase noise, due to Gordon-Mollenauer noise and cross-phase modulation (XPM)


43Gb/s RZ-DQPSK Experiments System set-up

40 Gbit/sDQPSKTransponder

LaserBank

n fill channels

DEMux

Inter-leaver

43 Gbit/sPattern

Generator

43 Gbit/sError

Detector

PARBERTTest Set

ClockData

ClockData

Scope

10 dB

ReceiveVOA

PowerMeter

20 dB

+11 dBm+1 dBm

OpticalSpectrum Analyzer

20 dB3 dB

EDFAEDFA

Noise Adder

8 - Span Fiber Link

Mux

Modulator

10 Gbit/sPattern

Generator

Dat

a

10 Gbit/sPattern

Generator

10 Gbit NRZTransponder

Data

20 dB

192,40 THz

TDC

VOA

VOA

VOA

ATT

ATT

EDFAPreamp

EDFABooster

192,60 THz

192,45 THz

192,55 THz

40 Gbit/s DQPSK 192,50 THz

10 Gbit NRZTransponder

Pol

Pol Pol

Pol

Pol

-1500,0

-1000,0

-500,0

0,0

500,0

1000,0

1500,0

2000,0

0 100 200 300 400 500 600 700

Length [km]

acc.

Dis

pe

rsio

n [p

s/n

m]

9 amplifiers, 8 fibre spans (total 660km)

With 10 Gb/s MUX/DMUX

Dispersion map includes pre/under-compensation

Noise loading to adjust OSNR

Includes 13 dummy channels

Up to four 10 Gb/s NRZ-modulated neighbour channels (spacing: 50 & 100 GHz)


43Gb/s RZ-DQPSK Experiments Results

BtB:

careful optimisation of the whole back-to-back setup, let to our knowledge to best back-to-back curve reported so far

8 span 660km 21.5 Gbd RZ-DQPSK transmission(margin from FEC limit Q=10dB in all cases > 3dB)

12.0

13.0

14.0

15.0

16.0

17.0

-3 -2 -1 0 1 2 3 4 5

average channel launch power in dBm

Q i

n d

Bsingle channel

100GHz OOK neighbours

50GHz OOK neighbours

Polynomisch (single channel)

Polynomisch (100GHz OOKneighbours)Polynomisch (50GHz OOKneighbours)

21.5Gbd RZ-DQPSK Q vs. OSNR

8

9

10

11

12

13

14

15

16

17

12 13 14 15 16 17 18 19 20 21 22 23 24

OSNR in dB (0.1nm)

Q i

n d

B

back-to-back(optimised)back-to-back(reference)

DWDM system tests:

Influence of OOK neighbours verified

System margin from EFEC limit in all cases > 3dB (Q=10dB)


Summary

Introduction






Conclusion


CIT CIT CIT CIT CIT Traffic

Supervision

TG4 TG4 TG Optical fibre

Graphical Network Control

LAN

Emulated ONNS Network Nodes

SUN 3 SUN 4 SUN 5 SUN 2 SUN 1

Emulated NEsEmulated NEs

Real NE(Unite)

Real NE(Unite)

Domain 1 Domain 2

GMPLS performance and scalability

Motivation Investigate the performance and the scalability of an ASON/GMPLS optical

control plane with respect to path provisioning


unprotected path setup explicit with 24 nodes network

0

5

10

15

20

25

0 10 20 30 40 50 60 70number of connections

setu

p t

ime

in u

nit

s

4 nodes8 nodes12 nodes16 nodes20 nodes24 nodes

GMPLS performance and scalability Number of nodes and LSA flooding impact

Effect of the number of nodes in path on the path setup time

Effect of LSA (Link State Advertisement) flooding on the path setup time


LSA thresholds with 12 nodes network

99%60%

20%10%

5%

0%

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

0 10 20 30 40 50 60 70 80 90 100

LSA percentage

mean

setu

p t

ime i

n u

nit

s

6 nodes

8 nodes

GMPLS performance and scalabilityScalability and LSA Threshold tuning analysis

LSA percentage: when the available link bandwidth changes by more that %, an LSA flooding is performed (LSA %)

The mean setup time decreases exponentially for LSA 0% till LSA 20%. After that, the decrease in nearly constant

mean path setup with 24 nodes network

0

1

2

3

4

5

6

7

0 4 8 12 16 20 24number of nodes

setu

p t

ime

in u

nit

s

Path setup time nearly linear with the number of the nodes taking part in the route


Experimental GMPLS fault management for OCh transport ring networks Motivation Propose enhanced GMPLS recovery schemes for OCh fault management in

Rings when the link failure also affects to the control channel Recovery of the control plane after a link failure

Loss of Light

Optical signal recovery

Optical Protection delay~ 100 ms

First Ping without reply

Each 100ms a ping from OCC1 to OCC3 is sent

First Responseafter failure

IP/ Control Restoration delay

~ 2100 ms

OCC 1

OCC 2

OCC 3

Trans. Monitor

Trans. Monitor Work. Fiber

Prot. Fiber

Failure Recovery


Summary

Introduction






Conclusion


Motivation Convergence on the IP layer requires that the different network services

requested by client networks can be emulated by the IP network Verification of basic functionality of Virtual-Private LAN Service (VPLS), such

as forwarding and MAC-address learning

PE

PE

PE

IP/MPLS enabledprovider network

CEClientnetwork Client

networkCE

Accessnetwork

CE

AC

AC

AC

PW

WDM WDM

WDM

Ethernet LAN

Ethernet LAN

Ethernet LAN

Hudiksvall

Acreo lab Vällingby

Nobel Phase 2

Metro-access interconnection - Implementation and verification of a VPLS


Metro-access interconnection - Implementation and verification of a VPLSResults Demonstration of successful VPLS set up This VPLS can serve as a platform for future investigations where the

level of QoS for the emulated LAN in varying situations can be analysed


Summary

Introduction






Conclusion


Conclusion

WP8 reached Year 2 objectives

– Integration in laboratory test beds of equipment, subsystems and emulators in strict cooperation with the implementation work done in other work packages (i.e. WP4 and WP6)

– Execution of the experiments planned during the first year of the Project

– Public demonstration of selected functionalities also in cooperation with other IST Projects (e.g. MUPBED)

These results and the developed test beds constitute a sound foundation for the next phase of the NOBEL project


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NOBEL Technical Audit WP8 Objectives & Achievements March 8 th, 2006 Workpackage 8 Integrated test bed and related experimental activities Carlo Cavazzoni