Park Inn by Radisson Copenhagen Airport Hotel

Park Inn by Radisson Copenhagen Airport Hotel

Engvej 171, 2300 København, Denmark


The DKNOG conference is a yearly event for internet network engineers in Denmark and the neighbouring countries full of inspiring talks and networking opportunities.

The DKNOG conference is focused on technical presentations in a host of areas, such as peering, routing, best practices, security and general technology that applies to network engineering professionals.

Join us in Copenhagen on March 14-15 for the ninth DKNOG conference.




This conference could not be arranged without the generous sponsorships from the following organisations and companies:





SEC Juniper
ItectraNetnordic Flexoptix NTT Communications


DIXAmazon Web ServicesArista

  • Abbas Aslani
  • Alin Pastrama
  • Allan Eising
  • Ana Torrijos
  • Anders Bjork Jul Jensen
  • Anders C Pedersen
  • Anders Jørgensen
  • Anders Marius Jørgensen
  • Anders Pedersen
  • Anders Rask
  • Anders Thorp Sørensen
  • Andreas Jauss
  • Andreas Krüger
  • Andrzej Soinski
  • Annika Wickert
  • Arnold Nipper
  • Asbjørn Højmark
  • Asbjørn Sloth Tønnesen
  • Asger Randløv
  • Aslak Domsten
  • Baldur Norddahl
  • Benjamin Blangstrup
  • Binhe Zhang
  • Bjarne Lynge
  • Bo Engsager
  • Bo Finnemann
  • Bo Kjellberg
  • Bo Mikkelsen
  • Brian Colin Strube Jeggesen
  • Brian Gregory
  • Brian Klovborg
  • Brian McMahon
  • Carsten Pettersson
  • Casper Krogh
  • Catalina Hansen
  • Chris Elliott
  • Christian Johannesen
  • Christian Lindholm
  • Christian Reupke
  • Christian Walmar
  • Christopher Segerberg
  • Chriztoffer Hansen
  • Clarence Filsfils
  • Claus Flygenring
  • Claus Fonnesbek
  • Claus Holbech
  • Claus Holm Christensen
  • Daniel Brun Jørgensen
  • Danny Christensen
  • Dennis Beck
  • Dennis Jensen
  • Dennis Skærup Højlund Andersen
  • Dmitry Karasik
  • Emil Palm
  • Eric Lindsjö
  • Erich Nielsen
  • Erik Bidstrup
  • Erik Verhoef
  • Fearghas McKay
  • Filip Široký
  • Finn Eriksen
  • Flemming Lund
  • Frank Peter Larsen
  • Frederik Agerkvist
  • Fredrik Korsbäck
  • Glen Niegsch
  • Gustaf Hyllested Servé
  • Gustav Stæhr
  • Hampus Näslund
  • Hans Bjarkov
  • Harm Werkman
  • Heino Mortensen
  • Henrijette Poulsen
  • Henrik Bønnelycke
  • Henrik Kramshøj
  • Henrik Thostrup Jensen
  • Istvan Bernath
  • iuniana oprescu
  • Ivan Andersen
  • Jacob Siewertsen
  • Jad EL CHAM
  • Jakob Ravnholt
  • Jan Chrillesen
  • Jan Ferré
  • Jan Gronemann
  • Janus Holm
  • Jeff Leaming
  • Jens Krayboerre
  • Jerry Grondel
  • Jesper Hvid Nielsen
  • Jesper Mogensen
  • Jesper Petterson
  • Jie Zhou
  • Joachim Jerberg Jensen
  • Job Snijders
  • John Dahl Pedersen
  • Jonas Hauge Jensen
  • Julian Lucek
  • Kasper Bræmer-Jensen
  • Kenneth Kjær
  • Kenneth Østrup
  • Kevin Richardson
  • Kim Lohse
  • Kim Schultz
  • Kireeti Kompella
  • Konstantinos Biliouris
  • Kristian Lajer
  • Lars Assenholt
  • Lars Kvam
  • Lars Møller Nielsen
  • Lasse Bo Larsen
  • Lasse Jarlskov
  • Lasse Leegaard
  • Lasse Luttermann
  • Lei Wang
  • LM Jogbäck
  • Lucas van den Berg
  • Mads Bennedbæk
  • Magnus Mollenhoff
  • Magnus Ringdahl
  • Marcus Stoegbauer
  • Marie Skouenborg
  • Mario Todorov
  • Mark Bailey
  • Mark Villadsen
  • Martin Arendtsen
  • Martin Bjerregaard
  • Martin Brandt Knudsen
  • Martin Eriksson
  • Martin Gyde Poulsen
  • Martin Hein
  • Martin Kristiansen
  • Martin Schiøtz
  • Martin Topholm
  • Mathias Wissing-Thornberg
  • Mathias Wolkert
  • Mattias Ahnberg
  • Mattias Karlsson
  • Maximilian Wilhelm
  • Michael Bekker
  • Michael Molbech
  • Michael Nielsen
  • Michael Tillge Lund
  • Michal Skorczewski
  • Mikkel Johannsen
  • Mikkel Mondrup Kristensen
  • Mikkel Olesen
  • Mikkel Thy Christensen
  • Mohammad El-Kalache
  • Morten Jensen
  • Morten Møller Riis
  • Morten Pilmark
  • Morten Pløger
  • Muhammad Uzair Suleman
  • Nicklas Seehusen
  • Olof Melander
  • Patrick Frederiksen
  • Per Marker Mortensen
  • Peter Cutler
  • Peter Krüpl
  • Peter Lundqvist
  • Peter Makholm
  • Peter Nørlund
  • Phil Regnauld
  • Philip Olsson
  • Pontus Torbjörnsson
  • Portia Rabonda
  • Rasmus Foss
  • Rasmus Åberg
  • Robin Petersen
  • Ronni Kristensen
  • Sean Hooker
  • Sebastian Vad Lorentzen
  • Signe Erdman Thomsen
  • Silvia Saldana Cercos
  • Simon Bønløkke Edelslund
  • Sonny T. Larsen
  • Stavros Anevlavis
  • Steven Larsen
  • Susan Forney
  • Svend-Erik Frisch
  • Søren Aurehøj
  • Søren Kragh Eklund
  • Søren Rosiak
  • Søren Skou
  • Thilo Bangert
  • Thomas B. Markussen
  • Thomas Flummer
  • Thomas Kjær
  • Thomas Nikolajsen
  • Thomas Rasmussen
  • Thomas Sloth
  • Thomas Steen Rasmussen
  • Thomas Thorbjørnsen
  • Thomas Weible
  • Tobias Balle
  • Tobias Dedenroth
  • Tobias Fonsmark
  • Tom Henriksen
  • Torben Grønne
  • Troels Foss
  • Uffe Døygaard
  • Vasilis Gretsistas
  • Vinnie van Gentevoort
  • Xiaoyu Li
  • Yisheng Wu
  • Yumin Ma
  • Thursday, March 14
    • 8:00 AM 9:00 AM
      Check-in and breakfast 1h
    • 9:00 AM 9:15 AM
      Welcome to DKNOG9 15m
    • 9:15 AM 9:30 AM
      Gold sponsor introductions 15m

      Our gold sponsors will briefly introduce themselves and their company.

    • 9:30 AM 10:30 AM
      Skillsets in a Software-defined, Disaggregated, Machine Learning Network 1h

      The Network Industry is changing quite fast; new proposals and dramatically new concepts are everywhere. How practical are these ideas? What is the likelihood that they will be deployed in networks? Perhaps most importantly, what is the impact on network operator jobs, job descriptions and roles if these ideas come to pass?

      "The DKNOG association was founded in 2009 with the goal of providing a social platform to further the exchange of knowledge within the Danish networking industry." But, going forward, what knowledge makes sense for operators? How should it be acquired? This talk will attempt to shed some light on the directions that networking might take in the future, and the type of knowledge/skillsets that would be needed.

      Speaker: Dr Kireeti Kompella (Juniper Networks)
    • 10:30 AM 11:00 AM
      Coffee break 30m
    • 11:00 AM 12:30 PM
      Segment Routing with Clarence Filsfils 1h 30m

      Cisco Fellow, Clarence Filsfils will update us on Segment Routing as a technology as well as describe use-cases and deployments.

      The Session will end with a 30 min. demo

      Speakers: Mr Clarence Filsfils (Cisco), Mr Joachim Jerberg Jensen (Cisco)
    • 12:30 PM 1:30 PM
      Lunch 1h

      Enjoy a refreshing lunch

    • 1:30 PM 2:00 PM
      SD-WAN anno 2019 30m

      There are somewhere between 35-50 so-called SD-WAN vendors out there, and since it is a buzzword and not a technology, it is a bit of a jungle to figure out what to expect from a product labelled "SD-WAN". This talk aims to clarify this, by looking at some of the marked leaders, killing some myths and getting to the core of what to expect from an SD-WAN solution.

      Speaker: Marie Skouenborg (GlobalConnect A/S)
    • 2:00 PM 2:30 PM
      SDN Controllers in the WAN 30m

      Some operators have recently been deploying SDN Controllers in the WAN for the first time. This presentation discusses the protocols needed to underpin a quasi-real-time SDN Controller for the WAN, and the major applications of such controllers. The flow of the presentation is as follows:

      How an SDN Controller gains visibility of the network, using the following ingredients

      (i) BGP-LS for topology discovery, including attributes of physical links such as bandwidth and metrics. This will include a discussion of how a controller gains visibility across multiple AS’s, in the case of multiple-AS networks,
      (ii) Streaming telemetry for link and LSP statistics and link latency data
      (iii) Status of traffic-engineered LSPs via PCEP

      How an SDN Controller instantiates or modifies RSVP or Segment-Routed traffic-engineered LSPs across the network.

      Closed Loop Automation, for example

      (i) Automated traffic management, by moving LSPs if congestion is detected
      (ii) automatically rerouting low-latency LSPs if the latency on a link is detected as having increased
      (iii) automatically rerouting LSPs if a fault is detected in a link or node

      Speaker: Julian Lucek (Juniper Networks)
    • 2:30 PM 3:00 PM
      Lightning Talks: Day 1
      • 2:30 PM
        BIO routing - a versatile, fast and reliable open source routing daemon in golang 15m

        BIO routing is a project to create a versatile, fast and reliable routing daemon in Golang (BIO = BGP + IS-IS + OSPF).

        We would like to present the current state of the BIO routing project. The talk should cover the following key points:
        * Why another routing daemon?
        * Key concepts and focus of BIO
        * Current feature set of BIO
        * Using BIO as library to implement specific tools like route injectors
        * What's planned for the future
        * What did we learn while implementing
        * How to contribute

        Source code is available at:
        BIO used as library for a route injector:

        Speakers: Maximilian Wilhelm (, Annika Wickert
      • 2:45 PM
        Monitoring with Prometheus & Friends 15m

        Prometheus is a timeseries database at the heart of a modern monitoring system. This presentation will explain how it works, and also introduce the major players in the Prometheus ecosystem: Alertmanager, blackbox_exporter, snmp_exporter and so on.

        Speaker: Thomas Steen Rasmussen (BornFiber)
    • 3:00 PM 3:30 PM
      Coffee and afternoon cake 30m
    • 3:30 PM 4:00 PM
      The design consideration of BNG (Broadband Network Gateway) for the metro area network 30m

      Understanding BNG
      Broadband Network Gateway (BNG) is the access point for subscribers, through which they connect to the broadband network. When a connection is established between BNG and Customer Premise Equipment (CPE),the subscriber can access the broadband services provided by the Network Service Provide (NSP) or Internet Service Provider (ISP).

      BNG establishes and manages subscriber sessions. When a session is active, BNG aggregates traffic from various subscriber sessions from an access network, and routes it to the network of the service provider.

      The BNG effectively manages subscriber access, and subscriber management functions such as:
      • Authentication, authorization and accounting of subscriber sessions
      • Address assignment
      • Security
      • Policy management
      • Quality of Service (QoS)

      This talk will go through some of the design considerations when deploying a BNG function to a network.

      Speaker: Mr Yisheng Wu (Huawei)
    • 4:00 PM 4:30 PM
      400G - don't get confused with this transceiver generation & IEEE 802.3bs 30m

      Transmission speed of 400G is becoming a reality, with new challenges for optical and electrical components in high speed systems emerging as well.
      PAM4 modulation is one key component for 400G transmission with transceivers following Ethernet IEEE 802.3bs, this talk will be a show and tell into PAM4. With this knowledge, the design decisions behind the new formfactors OSFP, QSFP-DD, SFP56-DD and µQSFP are easier to understand.
      This talk will help you to:
      Design / build new kind of applications or connections with your networking gear in the field
      100G will no longer be the fast option for IXP interconnections soon DR, FR4 and LR4 at 400G will be available
      Avoid pitfalls when designing your racks
      Be aware how power consumption and new plugs will be part of the new world of 400G transceivers.

      Speaker: Thomas Weible (FLEXOPTIX GmbH)
    • 4:30 PM 4:45 PM
      Student introductions 15m

      This year we have invited a number of students of networking to the conference. They will briefly introduce themselves and their school

    • 4:45 PM 5:15 PM
      Can we bridge the gap between industry and academia? 30m

      Is high education a benefit or a drawback when working in the telecom industry? Is the academia providing the students with the necessary tools to understand what happens in the real world? What to look for when hiring a new employee? Do we, in the industry, exploit the tools, and energy from young students who look at the industry with new fresh eyes? Are industry and research too far from each to actually find any synergies between these two worlds?
      This talk aims to tackle these questions from a person who has had a foot in both worlds. The idea is not providing statements of truth, but rather share few reflections that could inspire new students defining their next step forward, challenge current ways of working of our colleagues on the industry, help hiring managers to define the profiles that will fulfill the tasks in the best way possible, and maybe serve as an eye opener to find potential new win-win situations.

      Speaker: Dr Silvia Saldana Cercos (Telia Denmark)
    • 5:30 PM 6:00 PM
      Busses depart for the social 30m
    • 6:00 PM 12:00 AM
      Social by Netnod 6h Hallen (Krunch)



      Øresundsvej 14 2300 København S
    • 8:00 AM 9:30 AM
      Breakfast 1h 30m
    • 9:30 AM 9:45 AM
      Welcome to day 2 15m
    • 9:45 AM 10:30 AM
      Lightning Talks: Day 2
      • 9:45 AM
        Presentation about what kind of effort good peering takes 15m

        I would like to present at DKNOG09 about what good peering takes.

        I am a network administrator at Parknet and in 2018 we became a member of NL-IX and I would like to talk about how it takes effort to make good peering work. On the route server we at first only saw 4-5G of traffic but after actively pursuing peering partners and requesting we are now having to upgrade from 20G to a 100G port.

        Speakers: Mr Thomas Steffensen (Parknet), Mr Thomas Steffensen (Parknet)
      • 10:00 AM
        PeeringDB Update 15m

        This is a quick update on PeeringDB. For newcomers to DKNOG, we first introduce PeeringDB. After that we highlight two of the most important recent developemnts / features

        Speaker: Mr Arnold Nipper (PeeringDB)
      • 10:15 AM
        5 reasons to peer 15m

        With the price of transit being lower than ever, why do you want to peer in 2019? This lighting talk will investigate some of the non-financial reasons to peer – both for serviceproviders and enterprises

        Speaker: Mr Chrillesen Jan (Stofa A/S)
    • 10:30 AM 11:00 AM
      Peering Security 30m

      Peering is a great way to improve network performance and save on transit charges, but peering interfaces also can expose your network and make it vulnerable to attack. This talk addresses best practices for securing your peering sessions and a few tips for getting the most benefit from peering. The talk addresses routing security, port security, and talks about free tools from Hurricane Electric at that can help with the tasks.

      Speaker: Susan Forney (Hurricane Electric)
    • 11:00 AM 11:30 AM
      Coffee break 30m
    • 11:30 AM 12:00 PM
      DK: Digital Kingdom for data centers 30m

      I'll explain where we are today in terms of attracting foreign data center operators to Denmark, why this is happening, what are the benefits and issues, and what additional benefits may Denmark experience from this development over the next few years.

      Speaker: Mr Kim Schultz (Invest in Denmark)
    • 12:00 PM 12:30 PM
      Looking ahead: BGP Routing Security 30m

      Routing security is on the move, things are looking up! So, what changes to routing security are in the pipeline? What will happen in the next 18 months? In this presentation we cover updates from around the world and the role of RPKI - the future is bright!

      Speaker: Job Snijders (NTT Communications)
    • 12:30 PM 1:30 PM
      Lunch 1h

      Enjoy a refreshing lunch

    • 1:30 PM 2:00 PM
      That thing called Flowspec 30m

      Flowspec is by all means not a new invention to handle DDoS and volumetric based threats. In one way or another been around as a feature since 2008-2009. But never got the attraction and little vanished as a tool and concept... untill now. Implementations today mostly design to direct suspicious flows by direct certian prefixes to central located scrubber site for filtering and actions. The design to achive this mostly ref to as "Onramp&Offramp" which involves MPLS controlplanes and segmentation of traffic. Flowspec offers a greater toolbox now with not just redirect, but also drop, shape or lower the service for suspected flows already on the edge. This session aims to explain the Flowspec from design and develop to a ready product with all its experience. A Flowspec rule is much more than just ACL installed by BGP !

      Speaker: Mr Peter Lundqvist (Engineer Arista Networks)
    • 2:00 PM 2:30 PM
      Entering the 21st Century of Route-servers. 30m

      We will be talking about Netnod's journey from running Bird only Routeservers based on a Perl module for configuration into running a fully automated routeserver setup based on the following;

      • MANRS
      • IRR Filtering
      • RPKI Filtering
      • Alice LG (Lookingglass)
      • BGP Community filtering
      • With Examples

      And some upcoming Netnod news.

      Speaker: Mr Emil Palm (Netnod)
    • 2:30 PM 3:00 PM
      Enabling Automated DDoS Defence to Terabit Networks 30m

      Providers are often challenged by the cost and complexity of traditional DDoS protection systems, resulting in partial solutions which are a fraction of their transit/peering capacity and are slow and manual in their operation. High-performance traffic filtering and telemetry in the latest generation of edge routers is opening up new opportunities for security policy enforcement, including enabling real-time DDoS protection at a scale and low cost of ownership not previously possible.

      Speaker: Mr Peter Cutler (Corero)
    • 3:00 PM 3:15 PM
      Wrap-up, DKNOG9 15m
    • 3:15 PM 3:45 PM
      Coffee and Cake 30m