Alien Wave service deployment. Challenges going from experiments to - - PowerPoint PPT Presentation

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Alien Wave service deployment. Challenges going from experiments to - - PowerPoint PPT Presentation

Jan 06, 2023 152 likes •456 views

Alien Wave service deployment. Challenges going from experiments to live production. Roeland Nuijts, SURFnet Lars Lange Bjrn, NORDUnet Martin Nordal Petersen, DTU Fotonik Anna Vasileva Manolova, DTU Fotonik Tijmen Van den Brink, Telindus

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

Roeland Nuijts, SURFnet Lars Lange Bjørn, NORDUnet Martin Nordal Petersen, DTU Fotonik Anna Vasileva Manolova, DTU Fotonik Tijmen Van den Brink, Telindus Magnus Bergroth, NORDUnet Rasmus Lund, NORDUnet

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

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Outline

Introduction to the project Drivers/Motivations Alien Wave concept Past simulations, experiments and conclusions OAM&P Operational aspects of productizing the Alien Wave Monitoring concepts. Performance Next steps

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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 concept

Hero 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 results

Verification

  • 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

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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 dissipation Faster time to service cost savings Support of different modulation formats offers extended network lifetime.

Drivers

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Alien Wave concept

RX TX RX TX TX RX RX TX TX RX TX Conventional DWDM Multi domain DWDM systems Mulitdomain DWDM systems with alien wavelength TX RX TX RX RX

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  • 10G neighbours
  • Guardband variation

50 – 150 GHz

  • Full control of spectrum

in NORDUnet

  • Off-line VPI simulations

Past simulations, experiments and conclusions

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  • Lower number
  • n y axis

represents higher BER.

  • XPM effect seen

with higher intensity of the neighbour channel power

Past simulations, experiments and conclusions VPI Results: 10G variation w. constant 40G

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  • Simulations done

with 10G off to find SPM (if any)

  • Initial better BER

with higher intensity, but then SPM kicks

  • in. (7dBm)

Past simulations, experiments and conclusions

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Optimum area? 40G variation

  • w. constant

10G reveal both XPM and SPM

Past simulations, experiments and conclusions

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

Past simulations, experiments and conclusions

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Past simulations, experiments and conclusions

50HGz to 150GHz @ 10G = - 20,7 dBm

The pre-FEC BER is below 10-3 unless spacing is above 100GHz The Alcatel-Lucent design guide specifies 10G = - 17,2 in order to maintain guarantied performance according to traffic matrix!

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Cost savings 200G Amsterdam - Copenhagen

  • Cost of equipment is the

predominant factor by orders of magnitude (CAPEX)

  • Operational cost can be left out
  • f conclusion (OPEX)
  • Regenerated CAPEX cost

arround 50% higher compared to the AW CAPEX

Past simulations, experiments and conclusions

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  • 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”

Past simulations, experiments and conclusions

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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
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Operational aspects of productizing the Alien Wave

Involve respective NOC’s at startup fase Apply necessary staff training for handling AW services Agree on responsibilities and procedures Define operational handover criterias

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Responsibility agreements

Tasks

Responsibility Project partner NORDUnet SURFnet

Monitoring 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 address

NORDUnet +46 8 20 78 60 247@nordu.net SURFnet +31‐30‐247 7586 noc@surfnet.nl Partner

Contact info (Non urgent)

Telephone Email address NORDUnet +46 8 20 78 60 noc@nordu.net SURFnet +31‐30‐247 7586 noc@surfnet.nl

1st step Create a responsibility matrix with a clear

  • verview on “who’s

doing what” and contact info when something goes wrong

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Operational aspects

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

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OAM Identifying monitoring points

6 4 1 2 3 5

TX TX RX RX

ASD HB CPH

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OAM Identifying monitoring points

6 1 3 5

TX TX RX RX

ASD HB CPH

4 2

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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

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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 server Alcatel NMS

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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

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Monitoring solution NORDUnet/SURFnet startpoint

E2E measurement point Alcatel NMS Ciena NMS

Both NMS systems report status to 2 separate the Measurement points

  • n their individual alarm status

E2E measurement point

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Monitoring solution NORDUnet/SURFnet startpoint

Alarm status of

  • wn domain and

the partners end point can be monitored

E2E measurement point Alcatel NMS Ciena NMS

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

E2E measurement point

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Monitoring solution future PERFSonar??

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

  • verview

E2E measurement point Alcatel NMS Ciena NMS E2E measurement point

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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 2x4:1

A C B

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PERFORMANCE

In 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

E2E measurement point Alcatel NMS Ciena NMS

BER BER

E2E measurement point

NB! In the current AW setup BER from Alcatel not possible

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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.

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Thank you

Rasmus Lund, rasmus@nordu.net

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