DKNOG15

Mar 6, 2025, 8:15 AM → Mar 7, 2025, 5:15 PM Europe/Copenhagen

Scandic Copenhagen

Save the date: DKNOG16

DKNOG16 will happen on March 5-6 2026. Watch the event site for updates as we get closer.

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DKNOG15

DKNOG15 is live in Copenhagen and on YouTube.

Watch the presentations here: https://youtube.com/c/dknog/live

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DKNOG15 will be on March 6-7 2025 at Scandic Copenhagen.

Don't miss the chance to meet people with different backgrounds from the networking industry and create new connections. Whether you are a fresh graduate or a senior professional, learn something inspiring and catch up with the latest technology trends.

15 year anniversary edition

This event will mark the 15th anniversary for DKNOG. We are planning a special celebration event, so make sure you don't miss out!

Early bird registration will open mid-november and run until 31st December.

 

Sponsors

The DKNOG conference could not be arranged without the generous sponsorships from the following organizations and companies:

Platinum

Gold

 

Silver

 

Associate 

Coffee

 

 

 

Thursday, March 6

9:00 AM Registration and Breakfast

1 Welcome

Speaker: Lasse Jarlskov (DKNOG)

Watch on YouTube

Welcome to DKNOG15.pptx

2 An Environmental Perspective on Artificial Intelligence

An Environmental Perspective on Artificial Intelligence

Time to Present: 60 mins

Summary:

AI represents one of the biggest inflection points in the modern world of technology. Hyperscalers and other companies see a once-in-a-lifetime opportunity to leverage AI to enhance existing business models and create new innovations. Today the only way we know of to enhance AI performance is to use more and more compute power to train Generative AI models. This in turn seems to require astonishing amounts of electrical power that places massive strain on existing electrical grids, uses huge volumes of fresh water, and may place any chance of stemming climate change at risk.

In this tutorial we will look at how these models work, why they consume so much power, and why clean energy options to feed these AI data centers are so challenging.

Speaker: Mr Geoff Bennett (Infinera)

2025-03 High Level Perspectives on AI - DKNOG.pptx

Watch on YouTube

3 AI Workload networking challenges

AI workloads in large DC fabrics have seen its fair share of networking challanges. What are the pitfall seen, and how to address them ? With the market reacting to the expensive investments and looking for alternatives, can these solutions be distributed or moved outside DC ? Or atleast what parts ?

Speaker: Mr Peter Lundqvist

Peter Lundqvist AI_networking_challanges_dknog.pdf

Peter Lundqvist - AI_networking_challanges_dknog.pptx

Watch on YouTube

11:30 AM Lunch Break

4 WDM tutorial for Router Jockeys

Overview of wavelength multiplexing, optical components and optical networking from a historical to forward looking perspective.

Speaker: Kent Lidstrom

DKNOG 15 final version Smartoptics.pptx

Watch on YouTube

5 Analyzing network reliability up to 800G - Impact of SNR thresholds on BER for Coherent (16QAM) and Non-Coherent (PAM4) high speed transceivers under environmental variations

This presentation investigates the proximity to a low Signal-to-Noise Ratio (SNR) threshold that can still maintain a tolerable Bit Error Rate (BER) in 100G / 400G / 800G network links. Additionally, we account for factors such as temperature and cable length to predict the duration for which a reliable network connection can be sustained between transceivers. The analysis, based on data retrieved using a Flexbox, focuses on comparing the reliability of coherent (16QAM) and non-coherent (PAM4) transceivers, with a detailed discussion on the implications of these technologies on network performance.
Made by FLEXOPTIX Research - Gerhard and Thomas.

Speakers: Dr Gerhard Stein (FLEXOPTIX), Thomas Weible

Flexoptix - Network Reliability Analysis Coherent Non-Coherent.pdf

Flexoptix - Network Reliability Analysis Coherent Non-Coherent.pptx

Watch on YouTube

6 Being the decision-maker

To get the approval of your company's management or other designated decision-maker, it can be helpful to show how your proposal works towards company goals. But what if the decision-maker has incentives that don't line up with the company goals, or what if the company goals are wrong?

You and your fellow workers can address this issue by recognizing that you too are decision-makers. I will share some techniques for establishing your own committee of decision-makers, reaching an agreement within your committee, and then enforcing your decision.

Speaker: Thomas Haggerty

slides.pdf

Watch on YouTube

1:45 PM Coffee Break

7 The political economy of the internet – challenges for research

This talk discusses the conditions and capacities for carrying out studies of the political economy of the internet using publicly available data repositories – often developed for the market rather than research purposes. Building a comparative ownership analysis of internet infrastructures in the largest Nordic welfare states, we present methodological possibilities and limitations, as well as different technical workarounds to compensate for proprietary nature of many contemporary data sources. This opens up for a discussion of how to enhance transparency and reliable knowledge informing democratic debates about the underlying control mechanism in digital societies.

Speakers: Dr Signe Sophus Lai (Digital Infrastructure Think Tank), Dr Sofie Flensburg (Digital Infrastructure Think Tank)

DKNOG_Lai_Flensburg.pdf

Watch on YouTube

8 Black hole detection in Packet Networks

This presentation discusses blackhole detection in packet networks. Such blackholes are typically difficult to detect, and even working out on which router the blackhole is occurring can be difficult. We discuss two methods for detecting blackholes: indirect detection and direct detection. We describe a method for a router to report packet drops due to blackholes via IPFIX, including the reason for the drop and associated metadata. This makes the existence of a blackhole much more apparent to the operator and the control systems, thus greatly reducing the detection time. The scheme is equally applicable to IP, MPLS and Layer 2 traffic.

Speaker: Julian Lucek (Juniper Networks)

DKNOG2025-Lucek-internal-v2.pptx

DKNOG2025-Lucek-publish-v2.pdf

Watch on YouTube

9 The Tale of 2 Henrys - What building cars can teach us about building software

In the late 19th century, two industrial titans were born within a few months of each other but an ocean apart. Both of these men, Henry Royce and Henry Ford, were obsessed with precision engineering and, fortunately for many of us, cars. They focused on building the best motor cars possible, though they achieved their goals in very different ways: Royce was driven by perfection, Ford by production.

Michael Daly (Senior Director of Engineering) and Bart Dorlandt (Senior Network Automation Engineer) are working at Imperva where they are undergoing a complete rewrite of the Automation platform and we are using some of the ideas that these engineers have taught us us.

This presentation will explore our vision for building better, more sustainable tools and discuss how the Network Automation team at Imperva is implementing these principles in our workflow.

From the technical side we zoom in on a recent project using BGP Monitoring Protocol (BMP). Where we previously had manual network verification, which improved to screen scraping, now having a push model from the router to a central database. This gives us an “offline” state and allows the customer to self verify their configured and advertised prefixes are accepted and learned as expected. This didn’t happen without challenges. We will share the pitfalls and the challenges and how we faced and overcame them.

The presentations will use extracts from previous presentations.

Michael Daly:
- The Tale of 2 Henrys - Autocon2: https://www.youtube.com/watch?v=HPA1joeP0bY

Bart Dorlandt:
- PacketPusher PodCast - Deploying BGP Monitoring at sale- https://packetpushers.net/podcasts/heavy-networking/hn-759-deploying-the-bgp-monitoring-protocol-bmp-at-isp-scale/

Speakers: Bart Dorlandt, Michael Daly

Tale of Two Henrys - DKNOG V2

Tale of Two Henrys - DKNOG V2.pptx

Watch on YouTube

3:45 PM Coffee Break

10 Efficiency Unlocked: Mastering Service Sync between Netbox and NSO

In a fast-evolving digital landscape, network operators are continually challenged to enhance service delivery while maintaining efficiency and accuracy. This session presents an in-depth exploration of a cutting-edge strategi for synchronizing services between Netbox and NSO. Targeted towards network engineers, architects, and specialists, the talk emphasizes a documentation-first methodology, ensuring clarity and consistency throughout the synchronization process.

Key Topics:

• Dry-Run Verification: Implementing initial configuration checks to assure accuracy.
• Data Deduplication: Techniques to minimize data redundancy while maintaining integrity.
• Multi-Source of Record Readiness: Adaptable configurations to support diverse data sources.
• Scalable Architecture with FastAPI: Leveraging a microservice approach to enhance scalability and performance.

Learning Outcomes:

Participants will gain a understanding of the service synchronization process, we are implementing at Norlys. Attendees will leave equipped with strategies to optimize network operations through automated and efficient workflows, utilizing the power of Netbox and NSO.

Target Audience:

Network Engineers, Network Architects, System Administrators, and IT Professionals involved in network operations and service management.
This session is designed to empower network professionals with the knowledge and tools necessary to streamline service synchronization, making it an invaluable addition to any program agenda.

Speaker: Niclas Skøtt Petersen (Norlys)

Efficiency Unlocked-Mastering Service Sync between Netbox and NSO.pdf

Efficiency Unlocked-Mastering Service Sync between Netbox and NSO.pptx

Watch on YouTube

11 Brown field services and Interior Design

What does automating brown field network have to do with interior design?

A whole lot, actually!

This presentation will explain one of the most challenging problem with network automation with easy to understand examples.

The problem is universal, regardless of which automation platform you have chosen to use, and even though the author uses Cisco NSO, the presentation will be useful to anyone working with automation.

Speaker: Allan Eising (Telia Company)

brown-field-reconciliation dknog15.pdf

brown-field-reconciliation dknog15.pptx

Watch on YouTube

6:00 PM DKNOG15 Anniversary Social

We begin the evening with an anniversary show in the Planetarium dome.
Dinner will be served at 19.00.

Friday, March 7

9:00 AM Breakfast

12 Welcome Back

13 RouteViews Update

RouteViews was initiated in 1995 at the University of Oregon to allow network operators see what their routing tables looked like from an external perspective. Over the years since, this community project has set up collectors in strategic locations around the world, allowing network operators a rich view of their routing announcements, and researchers a valuable resource for tracking the growth and variations in the global Internet infrastructure.

This presentation introduces the new team behind RouteViews, and shares the new latest developments in the project, now operated on behalf of the global Internet community by the Network Startup Resource Center (NSRC). Some of the developments are a new Peering Policy, How to use the RouteViews system as a network operator and what are we working on for the future.

Speaker: Nina Bargisen (RoueViews/NSRC)

01 - rv_dknog15.pptx

Watch on YouTube

14 IPv6-only IXPs are Coming?

RFC5549/RFC8950 specifies a way of announcing IPv4 routes using IPv6 next-hops, allowing networks and IXPs to remove IPv4 link addressing. There is a working group at Euro-IX that aims to test interoperability of RFC8950 implementations and lay out the basics of its usage in an IXP environment. There are also a handful of IXPs already testing RFC8950 route servers.

Speaker: Aleksi Suhonen (TREX Tampere)

ipv6-only-ixps.pdf

Watch on YouTube

15 Prelude to a BGP hijack?

The current RPKI framework using ROAs only works to validate route origination.
IP Transit providers will implement filters governing which routes can be propagated based on information from the IRRs (Internet Routing Registries) - in our region the RIPE DB.

This is a real life example of manipulation to the RIPE DB, which could have enabled a BGP Hijack to bypass transit provider filters and Route Origin Validation (ROV).

Was this a prelude to a BGP Hijack or a simple mistake? You be the judge.

Speaker: Lasse Jarlskov (Telia Company)

Prelude to a BGP hijack.pptx

Watch on YouTube

11:00 AM Coffee Break

16 Get full controll of your egress peering traffic with EPE - Egress Peering Engineering

It can be hard to control how your traffic will egress your AS, when you have multiple peering points. That being your internet peerings and upstream providers or Caches from Netflix and the likes. With EPE you can start getting complete control of those traffic flows. You decide what traffic to deliver to whom from where in your network.

Speaker: Joachim Jerberg Jensen

DKNOG15-EPE-Joachim.pptx

Watch on YouTube

17 Traceroute: A (brief) overview

The purpose of this talk is to go over traceroute in context of the following:

• The evolution of networks over the last few decades and how it affects traceroute
• The different algorithms in use (ie: classic, dublin, paris)
• What our expectations are from traceroute

Speaker: Ruairi Carroll

Crusoe Slide Deck - Traceroute.pdf

Watch on YouTube

12:30 PM Lunch

18 When the hackers are inside the building: running a network for, and learning the lessons from penetration testers

Most admins spend their working life trying to keep malware, hackers, and their tools outside of their network. However, for the last four and a bit years, I've been working with the opposite problem. Running a network for a penetration testing company. Where the pentesters are using all the tools we'd normally like to keep a long way away from our network.

From threatmodelling, to implementation, in this talk I'll go through some of the unusual design and operational aspects of this unique usecase, as well as some of the examples we as an organisation have been able to learn from those we pentest.

Speaker: Julia Freeman

julia-freeman - DKNOG-2025-Slides.pdf

Watch on YouTube

19 Defending RPKI

What does the RPKI threat landscape look like for network operators? What are next steps in making RPKI work as reliable and secure as possible? In this talk Job Snijders will share existing and new ideas on how to defend network operators against malicious activity coming in via the RPKI.

Speaker: Job Snijders

DKNOG15 - Defending RPKI (1).pdf

Watch on YouTube

20 PeeringDB update

PeeringDB is a freely available, user-maintained, database of networks, and the go-to location for interconnection data. The database facilitates the global interconnection of networks at Internet Exchange Points (IXPs), data centers, and other interconnection facilities, and is the first stop in making interconnection decisions.

We present regular updates at Internet related events to inform those that don't know this valuable resource and tell current users about new features and developments.

Speaker: Paul Hoogsteder (i3D.net, Meanie)

20250306_DKNOG15_2025_Paul_Hoogsteder.pptx

20250306_DKNOG15_2025_Paul_Hoogsteder.pptx.pdf

Watch on YouTube

2:45 PM Coffee Break

21 Tips for IP-Transit Customers

With a few simple changes, IP-transit customers can increase the reliability of the prefix filtering provided to them by their IP-transit providers, and hopefully avoid easy-to-mitigate prefix filtering issues.

As an IP-Transit provider, we (Inter.link) often encounter prefix list generation issues with our customer's IRR data. In this talk we'll present some easy to implement changes, in relation to their IRR data and PeeringDB data, that have helped our customers, which other IP-transit customers can implement to improve the quality of their service with their provider.

Speaker: Theo Voss (Inter.link)

DKNOG15 - Tips for IP-Transit Customers.pdf

Watch on YouTube

22 The DKNOG Quiz

This is the "classic" DKNOG Quiz.

You will be tested on your knowledge of Routing, RPKI, Unix history, and most important on the content of the talks of the whole two days.

So, pay attention to all the talks, take note of all the details of slidesets, and prepare your fingers to answer as quick as possible.

Prizes will be given to the three highest scorers!

Speakers: Fearghas McKay, Massimiliano Stucchi (AS58280.net)

23 Wrap Up/End of Program