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Overview of GARR Optical Network
Today’s experience with AW and the future of GARR network
Gloria Vuagnin (Paolo Bolletta, Massimo Carboni) - GARR
9th CEF Networks Workshop | Prague, September 12th 2017
GARR: fibre footprint & optical Network
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
IRU fiber footprint 15000 km ~9.000 Km of backbone
~6.000 Km of access links
About 1000 user sites interconnected > 1 Tbps aggregated access capacity
> 2 Tbps Backbone Capacity
DWDM/OTN/ROADM Network • (2011) Huawei 1/10 G
• (2015) Infinera 10/40/100 G
• (Today) Alien Waves 100G between Core PoPs
Core IP/MPLS network • Juniper MX960/480/80
Metro/Aggregation • Cisco ME3600/3400
• CPE Cisco 2900 series
MI1 MI2
BO1
RM2
BA1
HOW DID WE GET THERE? Short history on how we built our current infrastructure:
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
GARR-X: since 2011
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Huawei OptiX OSN 8800 (6800 on ILA)
Key properties: • 80 channels @50GHz spacing
• DCM compensated
• λs: 10G and 40G IM-DD OOK
• Max capacity: 3.2 Tbps
• ROADM: • core nodes: colorless & directionless
• colored & directionless
• WSON control plane: preset restoration
• MUX and WSS: equipped with VOA
• Integrated OSA Board in each node
• OTN Matrix: 1.28Tbps
• Client: 1G, 10G
GARR-X Progress: since 2015
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Infinera DTN-X Intelligent transport network
Key properties:
• 16 superchannels@500G Fixed Grid
• For each superchannel: 10 coherent carriers spacied at 200GHz on a 25GHz Grid
• PM-QPSK, PM-BPSK
• Max capacity: 8 Tbps
• NO WSS
• SD-FEC (reach up to ULH)
• OTN Matrix: 5Tbps or 2Tbps
• GMPLS control plane
• Client: 10G, 40G, 100G
• Restoration and protection available
WHY NOT TO TEST ALIEN WAVES ? To different optical platforms:
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Why and where
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
RM2
NA1
Test 1 Test 2
Path RM2-NA1 RM2-AQ-PE-BA1-MT-NA1
Distance (km)
345 1181
Line Attenuation (dB)
93 314
# ROADM 2 6
# Raman Span 1 3
why: • Increase P2P capacity • Make 100GE client services
available in the northern network • the Infinera node needed only
where the 100GE service ends
• Extend the lifetime of the Huawei technology • All terminal nodes are kept to
deliver the native 10 Gbps services. Amps serve both platforms
Goal: To measure performances/pe- nalties of the Infinera superchannel alongside native lambdas over Huawei line system
Idea: • Share of the optical spectrum
among Huawei and Infinera signals
Where
Huawei Native Channels
C-BAND
50GHz
Infinera Alien Wave over Huawei
TX RX
INFINERA Alien Sys
TX/RX
INFINERA Alien Sys
TX/RX
QPSK QPSK
#8
Optical Fiber
Amplifiers
TX RX
TX RX
TX RX
Single Vendor Domain: HUAWEI
MU
X M
UX
IM-DD IM-DD
DCM
Infinera AW SuperChannel
4 8 12 16 20 24 28 32 36 40
100G PM-QPSK
dual carrier
10G IM-DD
11 5 6 38 39
25GHz
200GHz
Infinera node
LIN
E W
Superchannels Mux/demux (BMM2c)
Infinera NMS DNA
Lin
e c
ard
- A
OLX
Lin
e c
ard
- A
OLX
Sup
erch
ann
el
Setup for the test
9th CEF Networks Workshop | Prague, September 12th 2017
WSS
LINE N
WSS
LINE E
WSS
mux
demux
ITL ITL
Huawei node
Lin
e c
ard
- A
OLX
Huawei NMS U2000
The superchannel is split on its 10 carriers and enter Huawei Node through the A/D section
Monitoring point
Carrier 1
Carrier 10
Adaptation section Carriers mux/demux
Superchannel
OSA measurements @ RM2 (Rx Line)
#10
The ALIEN Infinera superchannel: 10 carriers- 200GHz spacing
Here 5 native Huawei signals together with 10 ALIEN Infinera carriers
11
13,77 13,63 13,32 13,14
12,92 12,63
6,50
7,50
8,50
9,50
10,50
11,50
12,50
13,50
14,50
0 1 2 3 4 5
AV
G Q
VA
LUE
(DB
)
HUAWEI CHANNELS
ALIEN WAVES + CANALI NATIVI
Alien Wave SuperChannel
4 8 12 16 20 24 28 32 36 40
38
Huawei Channels - Native
6 39
11
5
Shared optical spectrum: Q-value vs. number of native channels
Threshold value for Q-value
Acceptance value for carriers Q-value
Huawei signals have shown to be really robust. Huawei NMS did not reported any
performance variations due to the presence on aliens even on adjacent signals
(PRE-FEC BER <10-13).
Native and Alien signals performances
#12
QPSK vs BPSK signals performances
13,77 13,32
12,63
16,37 16,31 16,15
6,50
8,50
10,50
12,50
14,50
16,50
18,50
AW Muxing AW + 2 NativeW(1 Guard CH)
Muxing AW + 5 NativeW(NO Guard CH)
AV
G Q
Val
ue
(dB
)
QPSK BPSK
AW signal performance vs distance
Only AW
AW + Native AW + Native
Linear fit INFINERA
Native
Threshold value for Q-value
Acceptance value for carriers Q-value
WE CAN make use of AW method to strengthen GARR northern optical network
With the deployment of Infinera nodes in four PoPs - MI1, MI2, RM2, BO1 – we can:
• increase the p2p capacity among these core PoPs
• make available 100GE client services
Result of Alienwaves test
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Span properties
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
This span is the more challenging. Infinera suggested to apply red/blue spectrum split
BO1-MI1 RM2-BO1 BA1-BO1 RM2-MI2
Path BO1-MI1 RM2-FI1-BO1BA1-PE-AN-
BO-BO1
RM2-RM1-PI1-
GE-MI2
Distance (km) 277 495 813 1131
Attenuation (dB) 78 105 232 325
# OLA 2 4 10 12
# ROADM 2 3 6 5
# Raman Span 1 3 2 3
MI1 MI2
BO1
RM2
BA1
Infinera node
LIN
E W
Superchannels Mux/demux (BMM2c)
Infinera NMS DNA
Lin
e c
ard
- A
OLX
Lin
e c
ard
- A
OLX
Sup
erch
ann
el
Setup for production
9th CEF Networks Workshop | Prague, September 12th 2017
WSS
LINE N
WSS
LINE E
WSS
mux
demux
ITL ITL
Huawei node
Lin
e c
ard
- A
OLX
Huawei NMS U2000
The superchannel is splitted on its 10 carriers and enter Huawei Node through the A/D section
Monitoring point
Carrier 1
Carrier 10
Adaptation section Carriers mux/demux
Superchannel
Alien direction
Alienwaves Performances
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
MI2 MI1
RM2 BO1
BA1
PA1 CT1
NA1
11
31
km
27
7 k
m
81
3 k
m
495 km
191.725 THz 196.050 THz
192.10 THz 195.925 THz
INFINERA
HUAWEI
AW length
[km]
modulation red/blue
split
expected
Qvalue
[dB]
min
Qvalue
[dB]
max
Qvalue
[dB]
Average
Qvalue
[dB]
AW1 BO1-MI1 277 PM-QPSK no 12.2 13.46 14.06 13.74
AW3 BO1-RM2 495 PM-QPSK no 8.84 9.58 12.08 11.15
AW4 BA1-BO1 813 PM-QPSK no 8.03 7.17 10.46 9.22
AW5 RM2-MI2 1131 PM-QPSK yes 8.9 11.14 11.92 11.44
Measured values
Simulated values
Alienwaves performances
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Red/ Blue split applied
Load test
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Ethernet load seen from the routers.
This was a fiber cut These are line card resets, needed to solve a cosmetic bug
100Gb/s
FUTURE OF GARR NETWORK A glance on the
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Architecture from the provider point of view
CO
RE
SER
VIZ
I
AG
GR
EGA
ZIO
NE
AC
CES
SO
AC
CES
SO
UTE
NTE
UTE
NTE
FIN
ALE
CHI? Quali Servizi? Che modello di rete a supporto dei servizi?
Slide ‘stolen’ from Massimo Carboni presentation at WSGARR2016
Architecture from the user point of view
CORE AGGREGAZIONE ACCESSO ACCESSO UTENTE
SERVIZI UTENTE FINALE
Slide ‘stolen ’ from Massimo Carboni presentation at WSGARR2016
• Evolution of network requirements: • Centrality of the single user • Network perceived as invisible and ubiquitous • Increase request of fast deployment of new services
• GARR need to modify its services? • In addition to the usual: capacity, capacity and capacity • Security, Trust&identity, Computer&storage
Which are the emerging technologies? • Automation, Disaggregation, Softwarization, Open
These network technologies will change: • the skills to manage the network (net engineer ICT engineer) • Organizational models
How to be ready at the time when everything will be different ?
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
Basic facts while thinking of GARR evolution
In GARR we started the Elisa project
Evolved Layered network Infrastructure with Software/services Architecture
(Evoluzione rete con LIvelli Software Avanzati)
GOAL of ELISA project:
design our future network taking the inherent opportunities offered by the new paradigm shift
We wrote a white paper on our current vision and ideas. We really appreciate any comment, advice and open discussion with other NRENs on this topic.
https://www.garr.it/documenti/3474-garr-white-paper-maggio-2017
Network (and ICT) Evolution Trends
L0
L7
L3
From traditional stack To overlays
WDM
OTN
PACKET
IP/MPLS
NAT/FW/DNS
APP Services
L3-L7
L0-L2
Through Layered Network
ELISA-INFRA | Progetto Evoluzione Rete #25
APPS Services
Orchestrator
OVERLAY
SDN Controllers
Open Line Systems
Flex-Grid Packet/OTN
Flex-Modulation
UNDERLAY
Computing Storage
Proposal: a NRENs-vendors workshop
• Why not to organize a workshop where the NRENs together meet the vendors to discuss new trends, visions, ideas, NRENs requirements, vendor solutions ?
• Just a couple of items which sound interesting: • Automation described through a use case: e.g. High capacity on demand
• To dynamically establish high capacity interconnections between user premises (DC)
• Multi-layer optimization • To optimize the use of resources through a Multi-Layer approach for both network design and
monitoring
• Multi-vendor network integration • Multi-Vendor and disaggregated approach
• Virtual CPE • Agile delivery of new network services (NS) with modular network functions (NF)
• Metro-Regional Photonic layer • To implement a programmable and flexible photonic layer in a metro-regional area
CEF Network Workshop is a great place to get new ideas and advices.
We really appreciate an open discussion with you on the network evolution
Thank you
Conclusions
9th CEF Networks Workshop | Prague, September 12th 2017 Gloria Vuagnin - GARR
7th CEF
GARR evolution
8th CEF 9th CEF
2017 2016 2015 2012 2013 2014
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