nobel technical audit wp8 objectives & achievements march 8 th, 2006 workpackage 8 integrated...
TRANSCRIPT
NOBEL Technical Audit WP8 Objectives &
Achievements March 8th, 2006
Workpackage 8
Integrated test bed and related experimental activities
Carlo Cavazzoni
4Consortuim Confidential
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
5Consortuim Confidential
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
6Consortuim Confidential
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
8Consortuim Confidential
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
9Consortuim Confidential
Summary
Introduction
Test Beds and experimental results
– Transmission experiments
– Control plane functional interoperability
– Control Plane performance experiments
– Interworking and traffic measurements
Conclusion
10Consortuim Confidential
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)
11Consortuim Confidential
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)
12Consortuim Confidential
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)
13Consortuim Confidential
Summary
Introduction
Test Beds and experimental results
– Transmission experiments
– Control plane functional interoperability
– Control Plane performance experiments
– Interworking and traffic measurements
Conclusion
14Consortuim Confidential
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
15Consortuim Confidential
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
16Consortuim Confidential
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
17Consortuim Confidential
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
18Consortuim Confidential
Summary
Introduction
Test Beds and experimental results
– Transmission experiments
– Control plane functional interoperability
– Control Plane performance experiments
– Interworking and traffic measurements
Conclusion
19Consortuim Confidential
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
20Consortuim Confidential
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
21Consortuim Confidential
Summary
Introduction
Test Beds and experimental results
– Transmission experiments
– Control plane functional interoperability
– Control Plane performance experiments
– Interworking and traffic measurements
Conclusion
22Consortuim Confidential
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