"Kilowatt hour per Gigabyte - How hungry is your network?"

How to best perform on energy optimisation of the network infrastructure? Come with your creative ideas and examples on how we could reduce power consumption.


RENATER offices

23-25, rue Daviel

75013 Paris

RENATER can be reached from the 2 international Airports easily thanks to kind of train RER and that is connected to Paris subway ( ). RENATER Subway station is "Glacière". You should arrive either from Orly or Charles-De-Gaule Airport (RER station). From Orly you can use bus schuttle that bring you to RENATER or Orly-val + RER-B + subway. From Charles-De-Gaule Airport you can use RER-B + subway.

Practical info, including more on how to get there

Suggested Hotels

Hôtel des écrivains
8 Rue Coypel, 75013 Paris
01 47 07 76 32

Hôtel Saint Charles
6 Rue de l'Espérance, 75013 Paris
01 45 89 56 54

C.O.Q Hotel Paris
15 Rue Edouard Manet, 75013 Paris

Urban Bivouac Hotel
1 rue Sthrau, 75013 Paris
+33(0)1 83 75 69 83

La Manufacture Hotel - Paris
8 Rue Philippe de Champagne, 75013 Paris

Hotel B55 Paris ( Butte aux Cailles - Parc Montsouris - Cité U)
55 Rue Boussingault, 75013 Paris

Off Paris Seine
86 Quai d'Austerlitz, 75013 Paris

Remote Participation

Zoom link will be sent to registered participants by email

Click for Event Photographs

**If you would prefer your photograph to be removed from public access please email the sig-noc committee**


16&17 November in Paris 

*Recording available on request. Contact


Wednesday, 16th of November



Arrival - Lunch

Chair 1st Day -  Jonny Lundin
13:30-13:45Welcome and introductions - RENATER

Energy optimisation in GÉANT - Tony Barber, GÉANT

All the clues on how the GÉANT team is optimising energy consumption for the network and the services offered on top of it.


Energy optimisation and green solutions - Ariel Oleksiak, PSNC

In this presentation, we will see the energy optimisation in the computing and networking areas at PSNC, including implementation and works which PSNC is doing for external parties.

14:45-15:15Coffee and Croissant Break

Flash talks

Switch have been researching on how the network could survive power  shortages/rolling blackouts this winter.

Belwü, together with researchers at Osnabrück University and Deutsche Telekom is doing measurements in their lab to answer questions like "How much power does an idling port use?", "How much power goes into forwarding the packets?" or "Can power be saved by disabling ports at night?".


Telemetry in RNP - Guilherme Ladvocat, RNP (remote)

The RNP (Brazilian NREN) Network Operations team have been working with Telemetry since 2019. The benefits of implementing this technology proved that it is more reliable and scalable compared to the SNMP protocol. Since then, we have been working to move from the legacy protocol to the new one, but as early adopters, we encountered limitations and issues in the way. So in the talk, we would like to share our path/experience to implement telemetry in our network and what we are still working on.


P4-based flow monitoring system - Pavle Vuletić, University of Belgrade

P4 became a popular buzzword in networking community several years ago, because network device programability enables new applications, autonomic networking and network operations, in-band network telemetry and other new network features. However, are the NRENs ready for such a shift, or they will continue to procure complete solutions? What does it take to develop a P4-based application? What are the skill gaps NRENs might be facing? In this talk we will share our experience from developing a network flow monitoring system capable of capturing unsampled network flows at 10G that leverages P4 capabilities of Netronome NICs. We will describe the system and the results we got, but also share a series of challenges we faced during the development. 


RARE and the Global P4 Lab - Frederic Loui, RENATER

Presentation about the development of RARE (Router for Academia, Research & Education), free, open and cost-effective routing solution used in several regional networks and an IXP in France, as well as in other institutions around Europe.


Efficient energy management for servers in data centers 

Gabriel Verdejo Álvarez, rdlab UPC

A holistic approach to the server energy consumption issue in IT facilities, using a three layer strategy (architecture, service and physical) in order to deal with energy restrictions at any level. We will share our experience at /rdlab UPC (Universitat Politècnica de Catalunya)


Dinner -

**The restaurant is booked for us; dinner is self-paid**

Thursday, 17th of November


Chair 2nd day - Tony Barber

DDoS detection and mitigation - Jonny Lundin, SUNET

SUNET has analysed several options to work in DDoS detection from different angles. Find all the details in this presentation.


NaWas anti-DDoS - Frank Dupker NBIP/NaWas

NaWas offers an on-demand service to combat DDoS attacks to small, medium and large Internet and VoIP providers in the Netherlands and the rest of Europe. This helps to avoid large investments and access more powerful weapons to fend off DDoS attacks.


NeMo DDoS software - Alf Moens, GÉANT 

The NeMo-DDoS software is a powerful tool for Netflow-based DDoS and traffic anomaly detection & analysis. It was originally developed to address NREN-specific network analysis needs and has been enhanced ever since. 

10:30-11:00Coffee and Croissant Break

URAN Research and Academic network - Yevhenii Preobrazhenskyi, URAN (remote)

Summary of the challenges faced to keep the network running in the face of hostile aggression.

11:20-11:40Quantum Key Distribution (QKD) - Karel van Klink, GÉANT

Sharing results on Quantum Key Distribution tests performed in the GÉANT lab, investigating data and quantum key waves multiplexed on a shared fibre.


Flash talks

The "classic" SIG-NOC NOC/Network update of the Jisc network.

GÉANT has created a questionnaire to self-asses the level of maturity of each R&E insitution regarding orchestration, automation and virtualisation.


Update on the GÉANT network - Tony Barber, GÉANT

An update on the progress made to date in the GN4-3N refresh project. Updates will include deployment status, migration status and decommissioning status along with a look at the top risks, financial status and what is planned for the next months.   

12:30- 13:00Evaluation and future topics - Maria Isabel Gandia
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