alien wave service deployment. challenges going from … · 2012-11-21 · connect • communicate...

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Alien Wave service deployment.Challenges going from experiments to live production.

Roeland Nuijts, SURFnetLars Lange Bjørn, NORDUnetMartin Nordal Petersen, DTU FotonikAnna Vasileva Manolova, DTU FotonikTijmen Van den Brink, TelindusMagnus Bergroth, NORDUnetRasmus Lund, NORDUnet

GN3 JRA1 & 2, Workshop 20 – 22 Nov Kastrup, Denmark

1


Outline

Introduction to the projectDrivers/MotivationsAlien Wave concept Past simulations, experiments and conclusionsOAM&P Operational aspects of productizing the Alien WaveMonitoring concepts.PerformanceNext steps


Introduction to the project

Idea- Deploy alien wavelength between 2 NREN’s using

different vendors

Idea- Deploy alien wavelength between 2 NREN’s using

different vendors

Hero experiment- Establish the aw and show proof of conceptHero experiment- Establish the aw and show proof of concept

Testing- Experimental results for knowledge, optimisation and

possible guide lines for future AW deployment

Testing- Experimental results for knowledge, optimisation and

possible guide lines for future AW deployment

Verification- Simulations for verification of the experimental resultsVerification- Simulations for verification of the experimental results

Production- Establish procedures, agreements and a verified end product

Production- Establish procedures, agreements and a verified end product


Direct connection of customer equipment to a third party DWDM equipment and elimination of expensive transponders at the transition between two DWDM systems, Elimination of regeneration reduces power dissipationFaster time to service cost savingsSupport of different modulation formats offers extended network lifetime.

Drivers


Alien Wave concept

RX TX

RXTX

TX

RX

RX

TX

TX

RX TX

Conventional DWDM

Multi domain DWDM systems

Mulitdomain DWDM systems with alien wavelength

TX

RXTX

RX

RX


• 10G neighbours• Guardband variation

50 – 150 GHz• Full control of spectrum

in NORDUnet• Off-line VPI simulations

Past simulations, experiments and conclusions


• Lower number on y axis represents higher BER.

• XPM effect seen with higher intensity of the neighbour channel power


VPI Results:10G variation w. constant 40G


• Simulations done with 10G off to find SPM (if any)

• Initial better BER with higher intensity, but then SPM kicks in. (7dBm)



Optimum area?40G variation w. constant 10G reveal both XPM and SPM



Experiments backup the simulations and, “near optimum” area can be investigated with guard band variation testing(Graph@ 50Ghz spacing)




50HGz to 150GHz @ 10G = -20,7 dBm The pre-FEC BER

is below 10-3

unless spacing is above 100GHzThe Alcatel-Lucent design guide specifies 10G = -17,2 in order to maintain guarantied performance according to traffic matrix!


Cost savings200G Amsterdam - Copenhagen

• Cost of equipment is the predominant factor by orders of magnitude (CAPEX)

• Operational cost can be left out of conclusion (OPEX)

• Regenerated CAPEX cost arround 50% higher compared to the AW CAPEX



• Performed simulations conformed qualitatively with experimental results (VPI tool)

• Major XPM effects evident when guard band is decreased and neighboring channel power increased

• Equipment represents more than 98% of cost for an alien wavelength. In the case with regeneration, costs nearly double.

• OAM&P is adequate for this mix of products, few steps are needed for “normal operation”



OAM&P

NREN ISSUES• No real compatibility for

newer LH modulation schemes.

• No standardization targets LH/ULH applications

• No standardization targets OTS/OMS interworking

Consequence

NREN TARGETS• Full optical transparency

• Bitrate• Modulation format• Spacing

• Full optical control• Power• Spectrum• Admission


Operational aspects of productizingthe Alien Wave

Involve respective NOC’s at startup faseApply necessary staff training for handling AW servicesAgree on responsibilities and proceduresDefine operational handover criterias


Responsibility agreements

Tasks ResponsibilityProject partner NORDUnet SURFnetMonitoring point (S‐>N) Monitoring point (N‐>S) Informing about problem in (S‐>N) Informing about problem in (N‐>S) Keeping SURFnet spares for SURFnet in CPH. Replacing and reseating boards Documentation for onsite support Clear assignments for onsite support Spare part inventory tracking Ticket system information exchange Partner Contact info Alarm Situation

Telephone Email addressNORDUnet +46820 78 60 [email protected] +31‐30‐247 7586 [email protected] Contact info (Non urgent)

Telephone Email addressNORDUnet +46820 78 60 [email protected] +31‐30‐247 7586 [email protected]

1st step Create a responsibilitymatrix with a clear overview on “who’s doing what” and contact info when something goes wrong


Operational aspects

Second step. Define the internal processes for handling alien waves in the live production networkDefine monitoring points and interpretations across the network Find technical solution to monitor the identified pointsTest the monitoring setup


OAM Identifying monitoring points

6 4

1 2 3

5

TX

TXRX

RX

ASD HB CPH


OAM Identifying monitoring points

6

1 3

5

TX

TXRX

RX

ASD HB CPH

4

2


OAM

Details NORDUnet monitoring point HMB‐ORE

OADC1750

TDMX

OADC1750

TDMX

(Nrx) NORDUnet receive monitoring point

Port X

Port Y

HMB ORE

Alarms from individual ports (e.g. OADC 1750) shall be masked and relayed toward the Management system


Monitoring solution NORDUnet

Nagios script initiates a poll by asking the Monitoring server for alarm status

The Monitoring server then polls the Alcatel NMS via SNMP

Monitoring serverAlcatel NMS


Monitoring solution NORDUnet

Alcatel NMS reply's with current alarm list

The monitoring server search for alarms on relevant physical ports. If alarms are present, it correlates them with RM alarm data to check if an associated port is ”in service” or not. Result is sent back to Nagios

Service alarms are forwarded from service manager and physical alarms are forwarded by the element manager

Monitoring server (E2E-MP)Alcatel NMS


Monitoring solution NORDUnet/SURFnet startpoint

E2E measurement pointAlcatel NMS

Ciena NMS

Both NMS systems report status to 2 separate the Measurement points on their individual alarm status

E2E measurement point


Monitoring solution NORDUnet/SURFnet startpoint

Alarm status of own domain and the partners end point can be monitored


Ciena NMS

Via Plugin, Nagios and the Zenosstool can poll alarms from both MP’s and thereby have same alarm view



Monitoring solution futurePERFSonar??

In future, monitoring points can be integrated to the perfSONAR systemto get identical overview


Ciena NMS E2E measurement point


PERFORMANCE

Currently, degradation alarms from WSS components are possible to retrieve and forward to the Management system

Thresholds can be altered so that alarms arise before actual signal degradation appears

WSS w. ”OSA”AMP

OADC 2x4:1A

C

B


PERFORMANCEIn theory, SNMP trap polling method can be expanded also to forward statistics on the link performance. (BER)

Data will be sent from both parties, to the centralized monitoring system (e.g. perfSONAR) providing inter domain link health status on the AW


Ciena NMS

BER

BER


NB! In the current AW setupBER from Alcatel not possible


Next steps

To be done..• Finalize new “live” AW AMS – CPH. (Ongoing ETA end November)• Integrate SURFnet monitoring points into Zenoss (ongoing)• Expand the monitoring concept to also include Performance data• Collaboration with perfSONAR team to support future AW monitoring• Optimise procedures and processes• Communication between native and alien management/alarm

systems ??• Common optical design tool allowing joint network design between

different platforms with predictable performance.


Thank you

Rasmus Lund, [email protected]

http://www.geant.net/Media_Centre/Media_Library/Media%20Library/GN3-10-122%20DJ1%202%201v1%200%20State%20of%20the%20Art%20Photonic%20Switching%20Technologies_Read%20Only.doc

alien wave service deployment. challenges going from … · 2012-11-21 · connect • communicate...

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