{"acronym":"denog17","aspect_ratio":"16:9","updated_at":"2026-04-05T16:30:05.331+02:00","title":"DENOG17","schedule_url":"https://pretalx.com/denog17/schedule/export/schedule.xml","slug":"conferences/denog/denog17","event_last_released_at":"2025-12-02T00:00:00.000+01:00","link":"https://denog17.denog.de","description":"","webgen_location":"conferences/denog/denog17","logo_url":"https://static.media.ccc.de/media/events/denog/denog17/logo.png","images_url":"https://static.media.ccc.de/media/events/denog/denog17","recordings_url":"https://cdn.media.ccc.de/events/denog/denog17","url":"https://media.ccc.de/public/conferences/denog17","events":[{"guid":"062b49ae-ebea-58e6-906c-ff5f30f1990a","title":"Edge-of-Your-Seat Streaming: inside waipu’s terrabit-scale live-video CDN","subtitle":null,"slug":"denog17-75852-edge-of-your-seat-streaming-inside-waipu-s-terrabit-scale-live-video-cdn","link":"https://pretalx.com/denog17/talk/SZZGTP/","description":"Live video stresses every layer of a CDN: traffic spikes hit terabit scale in seconds, latency budgets shrink to single-digit seconds, and a single congested peering link can stall millions of viewers. This talk walks through how we built a custom Golang edge stack that now serves 5.5 Tbps across five German PoPs. We’ll unpack the caching hierarchy, peer-aware user steering that exploits BGP and ECMP, and the trade-offs between channel affinity, cache size, and uplink utilization. We'll also touch on observability with Prometheus and client-app telemetry enriched by CMCD.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Leo Antunes"],"tags":["75852","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":537,"promoted":false,"date":"2025-11-10T10:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-17T10:00:06.135+01:00","length":1714,"duration":1714,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75852-062b49ae-ebea-58e6-906c-ff5f30f1990a.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75852-062b49ae-ebea-58e6-906c-ff5f30f1990a_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75852-062b49ae-ebea-58e6-906c-ff5f30f1990a.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75852-062b49ae-ebea-58e6-906c-ff5f30f1990a.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75852-edge-of-your-seat-streaming-inside-waipu-s-terrabit-scale-live-video-cdn","url":"https://media.ccc.de/public/events/062b49ae-ebea-58e6-906c-ff5f30f1990a","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"ea9a64a0-e757-545d-b8e6-ec81b3524ee7","title":"Th3 Flock of Bird s","subtitle":null,"slug":"denog17-78857-th3-flock-of-bird-s","link":"https://pretalx.com/denog17/talk/XRVTP3/","description":"As Bird is evolving over the years and we now have Bird version 3 available at our fingertips, maybe we should know the capabilities of it and what performance we can expect from it.\n\nGet some numbers in comparison with other routing stacks.\nLet's take a quick look on the shiny new feathers Bird prepared for us.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Marcel Fest"],"tags":["78857","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":72,"promoted":false,"date":"2025-11-10T15:20:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-31T08:45:07.109+02:00","length":479,"duration":479,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78857-ea9a64a0-e757-545d-b8e6-ec81b3524ee7.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78857-ea9a64a0-e757-545d-b8e6-ec81b3524ee7_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78857-ea9a64a0-e757-545d-b8e6-ec81b3524ee7.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78857-ea9a64a0-e757-545d-b8e6-ec81b3524ee7.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78857-th3-flock-of-bird-s","url":"https://media.ccc.de/public/events/ea9a64a0-e757-545d-b8e6-ec81b3524ee7","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"8c4a0c5d-a567-5d74-947a-f61e7e6efcc4","title":"\"What can possibly go wrong?\" Stories of peculiarities of modern server hardware","subtitle":null,"slug":"denog17-75886-what-can-possibly-go-wrong-stories-of-peculiarities-of-modern-server-hardware","link":"https://pretalx.com/denog17/talk/VJJ9RC/","description":"After discussing building a 1 Tbps/1 Gpps load generator on commodity x86-64 hardware, one of the most common follow-up topics was the reasoning behind some of the decisions. And here I've realised that it is not commonly understood that modern systems are more complex than classic multi-socket NUMA systems, and that if you don't consider some of their peculiarities, you won't achieve the expected performance. In this talk, I want to explore what happens when you break those assumptions and how you can identify them. All examples would be based on the assumption that you are using Cisco T-Rex for load generation and fd.io VPP as a target load.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Vladimir Smirnov"],"tags":["75886","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":382,"promoted":false,"date":"2025-11-10T14:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-04-05T08:30:05.170+02:00","length":1490,"duration":1490,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75886-8c4a0c5d-a567-5d74-947a-f61e7e6efcc4.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75886-8c4a0c5d-a567-5d74-947a-f61e7e6efcc4_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75886-8c4a0c5d-a567-5d74-947a-f61e7e6efcc4.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75886-8c4a0c5d-a567-5d74-947a-f61e7e6efcc4.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75886-what-can-possibly-go-wrong-stories-of-peculiarities-of-modern-server-hardware","url":"https://media.ccc.de/public/events/8c4a0c5d-a567-5d74-947a-f61e7e6efcc4","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"06edb2df-8b45-5794-9546-4648e299a51e","title":"Fun with Optics","subtitle":null,"slug":"denog17-75500-fun-with-optics","link":"https://pretalx.com/denog17/talk/AXEKSR/","description":"This talk dives into the cutting-edge developments shaping today's silicon landscape, showcasing the leap to 800Gbps Ethernet and setting the stage for the transition toward 1600Gbps. We’ll spotlight Linear Interface Optics technologies and show how those can reduce the power consumption. To wrap up, we’ll explore the evolution of ZR and ZR+ optics.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Patrick Prangl"],"tags":["75500","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":179,"promoted":false,"date":"2025-11-11T14:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-01T12:45:04.629+02:00","length":1787,"duration":1787,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75500-06edb2df-8b45-5794-9546-4648e299a51e.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75500-06edb2df-8b45-5794-9546-4648e299a51e_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75500-06edb2df-8b45-5794-9546-4648e299a51e.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75500-06edb2df-8b45-5794-9546-4648e299a51e.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75500-fun-with-optics","url":"https://media.ccc.de/public/events/06edb2df-8b45-5794-9546-4648e299a51e","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"2b73e3d8-13d6-5578-ba13-283ab53d6dc4","title":"Compliance in Practice: Making NIS2 and ISO 27001 Work in Daily Operations","subtitle":null,"slug":"denog17-79870-compliance-in-practice-making-nis2-and-iso-27001-work-in-daily-operations","link":"https://pretalx.com/denog17/talk/DUMD8G/","description":"With NIS2, ISO 27001 and requirements of BNetzA raising the bar for security and operational compliance, many internet providers are asking the same question: *How do we meet these requirements without drowning in bureaucracy?*\n\nThis talk bridges the gap between regulation and real-world implementation. Instead of focusing on theory or checklists, we’ll look at how to integrate compliance into the day-to-day work of running a network—with minimal friction.\n\n**Topics include:**\n\n- Turning compliance into a continuous, manageable process  \n- Using a Single Source of Truth (SSoT) to manage documentation, assets, and controls  \n- The “document once, but right” principle: reducing duplication and inconsistency  \n- Assigning and tracking responsibilities that actually get done  \n- Lessons from real-life audits and what works in lean teams  \n- Tooling, automation, and pragmatic templates to stay compliant while staying sane\n\nWe will demonstrate these concepts using open-source tools like:\n\n- **NetBox** for infrastructure inventory and network documentation  \n- **Snipe-IT** for asset lifecycle management  \n- **Zammad** for task and ticket tracking  \n- **Eramba** for managing risk, controls, and policy compliance  \n- **GitLab** for documentation, version control, and approval workflows\n\nThese tools help create a practical compliance framework that integrates seamlessly into daily operations and supports both audit readiness and operational efficiency.\n\nThis session is tailored for engineers, DevOps, and infrastructure managers at ISPs and hosting providers who want to build a compliant operation—without losing focus on uptime, performance, and business continuity.\n\n**You’ll walk away with concrete strategies and examples you can apply on Monday.**\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Mathias Handsche"],"tags":["79870","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":266,"promoted":false,"date":"2025-11-11T11:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-02T13:45:07.309+02:00","length":2014,"duration":2014,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79870-2b73e3d8-13d6-5578-ba13-283ab53d6dc4.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79870-2b73e3d8-13d6-5578-ba13-283ab53d6dc4_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79870-2b73e3d8-13d6-5578-ba13-283ab53d6dc4.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79870-2b73e3d8-13d6-5578-ba13-283ab53d6dc4.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79870-compliance-in-practice-making-nis2-and-iso-27001-work-in-daily-operations","url":"https://media.ccc.de/public/events/2b73e3d8-13d6-5578-ba13-283ab53d6dc4","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"1b82ed1c-4392-54ff-9727-3e1fe874a7d0","title":"QoE Matters – How Application-Level Monitoring Pinpoints Network Issues","subtitle":null,"slug":"denog17-78774-qoe-matters-how-application-level-monitoring-pinpoints-network-issues","link":"https://pretalx.com/denog17/talk/WJ8JGT/","description":"Network operations engineers maintain the backbone of our digital experiences, ensuring robust connectivity and managing complex routing. Yet, even with great network health, where are the current limits of today’s routing technology? What does it mean when your manager calls you and says “Our customers can’t watch Netflix!”? Can we measure how the end users experience the high variety of OTT-services, beyond classical speedtests? In this talk, we will investigate real-world scenarios where network issues, even seemingly minor ones, impacted video QoE. We'll demonstrate how solutions to these problems often go miles beyond classic NOC-room resolutions, requiring a deeper understanding of streaming protocols, user-centric performance, and QoE. Drawing on insights from standardized QoE metrics, we'll demonstrate how understanding the user's perception of video quality provides a critical new layer of visibility. This talk aims to equip network engineers with insights to proactively diagnose and address the hidden causes of poor customer video experience.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Alexander Martin Dethof"],"tags":["78774","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":56,"promoted":false,"date":"2025-11-10T11:00:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-16T11:00:10.072+01:00","length":1496,"duration":1496,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78774-1b82ed1c-4392-54ff-9727-3e1fe874a7d0.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78774-1b82ed1c-4392-54ff-9727-3e1fe874a7d0_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78774-1b82ed1c-4392-54ff-9727-3e1fe874a7d0.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78774-1b82ed1c-4392-54ff-9727-3e1fe874a7d0.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78774-qoe-matters-how-application-level-monitoring-pinpoints-network-issues","url":"https://media.ccc.de/public/events/1b82ed1c-4392-54ff-9727-3e1fe874a7d0","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"e9bff5a9-c382-573f-8d01-3b42ab304ffe","title":"200 GbE network processing with 100 W - or \"can I *make* a chip for that?\"","subtitle":null,"slug":"denog17-79016-200-gbe-network-processing-with-100-w-or-can-i-make-a-chip-for-that","link":"https://pretalx.com/denog17/talk/VEGBSU/","description":"This talk presents how to to offload networking tasks onto dedicated hardware/smartNICs/NPUs (network processing units) - chips, and why this is a great idea.\nFirst, we take a look at chips in general - how they are made, integrated into networks, and why time is playing to the advantage of dedicated chips vs. CPUs/software.\nThen, focus is on how offloading network tasks is a particularly beautiful example of the advantages of hardware-implementing logic, with examples like TCP offloading, cybersecurity applications, or traffic shaping.\nTo be fair and balanced, there will also be a look at the downsides of chips, but of course also ideas for mitigating them.\nFinally, there will be a look at what's out there, and how to integrate custom chips into your systems.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Philipp Keydel"],"tags":["79016","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":227,"promoted":false,"date":"2025-11-10T15:00:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-20T22:15:06.025+01:00","length":1556,"duration":1556,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79016-e9bff5a9-c382-573f-8d01-3b42ab304ffe.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79016-e9bff5a9-c382-573f-8d01-3b42ab304ffe_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79016-e9bff5a9-c382-573f-8d01-3b42ab304ffe.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79016-e9bff5a9-c382-573f-8d01-3b42ab304ffe.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79016-200-gbe-network-processing-with-100-w-or-can-i-make-a-chip-for-that","url":"https://media.ccc.de/public/events/e9bff5a9-c382-573f-8d01-3b42ab304ffe","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"6a6f722a-58b2-5689-8c41-d5c7a3f753bb","title":"IXP Update","subtitle":null,"slug":"denog17-79917-ixp-update","link":"https://pretalx.com/denog17/talk/CMR8MS/","description":"News from IXPs in Germany\nAs introduced 2021 we collect some parameters from all IXPs, which are active in Germany.\nThis talk aggregates the Updates for all the IXPs in a common format and will be presented in a neutral way.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Tim Kleefass"],"tags":["79917","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":123,"promoted":false,"date":"2025-11-11T14:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-02-23T00:00:06.913+01:00","length":1529,"duration":1529,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79917-6a6f722a-58b2-5689-8c41-d5c7a3f753bb.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79917-6a6f722a-58b2-5689-8c41-d5c7a3f753bb_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79917-6a6f722a-58b2-5689-8c41-d5c7a3f753bb.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79917-6a6f722a-58b2-5689-8c41-d5c7a3f753bb.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79917-ixp-update","url":"https://media.ccc.de/public/events/6a6f722a-58b2-5689-8c41-d5c7a3f753bb","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7","title":"Inventing the wheel - Network Orchestration at scale","subtitle":null,"slug":"denog17-71798-inventing-the-wheel-network-orchestration-at-scale","link":"https://pretalx.com/denog17/talk/JECPAH/","description":"At DE-CIX, we're redefining network orchestration from first principles. Confronted with the limitations of existing systems, we set out to design a modern orchestration stack—one capable of managing a truly global network, seamlessly interfacing with a variety of upstream and downstream systems, supporting fully managed network devices, and, above all, delivering uncompromising reliability.\n\nIn this talk, we share our transformation journey—from our starting point to our vision for the future. We'll delve into the architectural choices, design principles, and decision-making frameworks that guided our approach. We’ll also explore how we rigorously test our systems and highlight the critical lessons we’ve learned—insights that are applicable to any complex network automation project.\n\nOur solution is built on three key pillars: a tightly integrated central source of truth for configuration management, an event-driven architecture for service orchestration, and a highly scalable design that accommodates rapid global growth.\n\nTo ensure stability and correctness, we've implemented a digital twin—internally dubbed Shadow—which mirrors the production environment. This shadow stack enables us to validate and test new software iterations in parallel, minimizing risk and accelerating confidence before deployment to real hardware.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Tom Merlin Eichhorn"],"tags":["71798","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":401,"promoted":false,"date":"2025-11-10T16:40:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-17T09:30:05.801+01:00","length":1793,"duration":1793,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/71798-884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/71798-884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/71798-884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/71798-884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-71798-inventing-the-wheel-network-orchestration-at-scale","url":"https://media.ccc.de/public/events/884cbe1d-ce78-5ea5-bdf4-8507f7cb08b7","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"195d9be8-ea66-5e9f-8021-766bb5f9cc75","title":"CGNAT scale testing using TRex","subtitle":null,"slug":"denog17-78247-cgnat-scale-testing-using-trex","link":"https://pretalx.com/denog17/talk/G8PZUA/","description":"I would like to present my testing methodology and the results of using TRex to generate \"stateful\" traffic for the purpose of scale testing CGNAT solutions. The main focus of the test is to determine the actual scale around Juniper's SRX solution.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Philipp Glaser"],"tags":["78247","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":84,"promoted":false,"date":"2025-11-11T11:20:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-16T15:00:08.191+01:00","length":542,"duration":542,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78247-195d9be8-ea66-5e9f-8021-766bb5f9cc75.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78247-195d9be8-ea66-5e9f-8021-766bb5f9cc75_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78247-195d9be8-ea66-5e9f-8021-766bb5f9cc75.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78247-195d9be8-ea66-5e9f-8021-766bb5f9cc75.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78247-cgnat-scale-testing-using-trex","url":"https://media.ccc.de/public/events/195d9be8-ea66-5e9f-8021-766bb5f9cc75","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"0272c5b2-aa61-5f33-a6bc-c207da54625f","title":"EVPN Flex Cross Connect - L2 P2P VPNs can be agile as well!","subtitle":null,"slug":"denog17-75209-evpn-flex-cross-connect-l2-p2p-vpns-can-be-agile-as-well","link":"https://pretalx.com/denog17/talk/FNVVFQ/","description":"EVPN is (now) a well know Service Framework and is widely used as a replacement for VPLS ELAN Services and even some IP-VPN Services.\n\nEVPN was able to also do P2P ELINE Style services for quite some time, but with the finalization of RFC9744 it got some very interesting capabilities that can especially help aggregation networks to reduce scaling problems.\n\nThe talk will give a very brief primer on how the EVPN Service Framework is being setup to allow for easy extension, focuses on the Flex Part of the new extension and will give some examples on how this impacts some (near to) real world scenarios.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Tobias Heister"],"tags":["75209","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":509,"promoted":false,"date":"2025-11-10T10:30:00.000+01:00","release_date":"2025-12-02T00:00:00.000+01:00","updated_at":"2026-04-01T11:15:06.610+02:00","length":1908,"duration":1908,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75209-0272c5b2-aa61-5f33-a6bc-c207da54625f.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75209-0272c5b2-aa61-5f33-a6bc-c207da54625f_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75209-0272c5b2-aa61-5f33-a6bc-c207da54625f.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75209-0272c5b2-aa61-5f33-a6bc-c207da54625f.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75209-evpn-flex-cross-connect-l2-p2p-vpns-can-be-agile-as-well","url":"https://media.ccc.de/public/events/0272c5b2-aa61-5f33-a6bc-c207da54625f","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f","title":"Making Network Automation Consumable: A Junior Engineer's Perspective","subtitle":null,"slug":"denog17-78242-making-network-automation-consumable-a-junior-engineer-s-perspective","link":"https://pretalx.com/denog17/talk/VA9SFE/","description":"As a Junior Engineer, the consumability of a network automation tool can really make or break your experience. 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Fancy tools are great, but at the end of the day, someone has to actually use them—both now and in the future, right?\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Emre Cinar"],"tags":["78242","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":116,"promoted":false,"date":"2025-11-11T09:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-22T15:45:06.183+01:00","length":1526,"duration":1526,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78242-9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78242-9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78242-9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78242-9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78242-making-network-automation-consumable-a-junior-engineer-s-perspective","url":"https://media.ccc.de/public/events/9b2ee3cb-51c3-5f4e-82e9-9503ca567b6f","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"2c9dae29-2df5-571f-8bf5-5406a2025256","title":"IPv6 multihoming without BGP, quo vadis?","subtitle":null,"slug":"denog17-78841-ipv6-multihoming-without-bgp-quo-vadis","link":"https://pretalx.com/denog17/talk/QNDD3G/","description":"Well, there's always NAT, or NPT. But that's supposed to be the *dark ages* 20th century IPv4 solution. So how do you do it *nicely* in IPv6?\n\nThe \"nicest\" possible approach seems to be dst-src routing (aka SADR, aka sourcedest) — this talk summarizes the situation before diving into that solution. You will hopefully come away with an understanding of how this isn't policy routing, what router features are still spotty, what RFC 6724 \"rule 5.5\" and RFC 8028 are, and why a Linux based system is simultaneously the best router and the worst end host in this.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["David 'equinox' Lamparter"],"tags":["78841","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":375,"promoted":false,"date":"2025-11-11T14:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-03T14:00:06.046+02:00","length":1613,"duration":1613,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78841-2c9dae29-2df5-571f-8bf5-5406a2025256.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78841-2c9dae29-2df5-571f-8bf5-5406a2025256_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78841-2c9dae29-2df5-571f-8bf5-5406a2025256.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78841-2c9dae29-2df5-571f-8bf5-5406a2025256.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78841-ipv6-multihoming-without-bgp-quo-vadis","url":"https://media.ccc.de/public/events/2c9dae29-2df5-571f-8bf5-5406a2025256","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"cc70f31a-6465-53b9-9343-ac3b0c9e7db8","title":"You can’t just model a train in Netbox: About Architecting and running modern IT Infrastructure in Trains","subtitle":null,"slug":"denog17-78243-you-can-t-just-model-a-train-in-netbox-about-architecting-and-running-modern-it-infrastructure-in-trains","link":"https://pretalx.com/denog17/talk/K3HSNK/","description":"At DB Fernverkehr, we are running some IT Infrastructure on a large fleet of ICE Trains. \nIn the past, there was only WIFI for the passengers, and many systems were handled as “embedded systems”. Nowadays, more aspects of “modern IT infrastructure” are part of the IT in trains, providing additional services like passenger information.\n\nThis talk gives a quick introduction of what is happening on the trains, as well as some of the challenges compared to infrastructure built in data centers: How to get proper internet on the train? How can a network look like? What is the difference to the data center with regards to hardware selection and lifecycle? Do we even have racks? And most importantly: Why can’t we just model a train in netbox?\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Vanessa Gaube"],"tags":["78243","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":1583,"promoted":false,"date":"2025-11-11T15:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-05T13:45:05.856+02:00","length":1697,"duration":1697,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78243-cc70f31a-6465-53b9-9343-ac3b0c9e7db8.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78243-cc70f31a-6465-53b9-9343-ac3b0c9e7db8_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78243-cc70f31a-6465-53b9-9343-ac3b0c9e7db8.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78243-cc70f31a-6465-53b9-9343-ac3b0c9e7db8.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78243-you-can-t-just-model-a-train-in-netbox-about-architecting-and-running-modern-it-infrastructure-in-trains","url":"https://media.ccc.de/public/events/cc70f31a-6465-53b9-9343-ac3b0c9e7db8","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"810b8668-1799-574a-ad00-35c74577d997","title":"The Asian internet - A guide for the uninitiated","subtitle":null,"slug":"denog17-80750-the-asian-internet-a-guide-for-the-uninitiated","link":"https://pretalx.com/denog17/talk/CAD9N7/","description":"The Internet is not the same everywhere. And in Asia, the world’s most populous region with some of the fastest growing economies, it can be especially complex. \nJoin Telstra to learn about how differently the Internet operates in Asia compared to Europe and North America, how those behaviour are likely to change as the impact of new AI workloads is felt across global networks, and what variables you need to think about when architecting your own network so that your company can make the most of the huge market opportunity Asia offers.\n\nThis talk will cover:\n\tThe history of the internet in Asia\n\tHow routing has developed between countries within Asia and to the rest of the world\n\tGeographic influences on digital infrastructure across the region\n\tGeopolitical influences on network traffic and market access\n\tHow AI is starting to influence subsea and IP networks in Asia Pacific\n\tRecommendations on how to make your digital infrastructure future ready to capture the growth opportunity in Asia\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Bernhard Pusch"],"tags":["80750","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":277,"promoted":false,"date":"2025-11-11T10:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-10T12:00:09.336+01:00","length":1834,"duration":1834,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/80750-810b8668-1799-574a-ad00-35c74577d997.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/80750-810b8668-1799-574a-ad00-35c74577d997_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/80750-810b8668-1799-574a-ad00-35c74577d997.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/80750-810b8668-1799-574a-ad00-35c74577d997.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-80750-the-asian-internet-a-guide-for-the-uninitiated","url":"https://media.ccc.de/public/events/810b8668-1799-574a-ad00-35c74577d997","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"f8e8103b-2181-5d12-a884-189eb7db4140","title":"Performance measurement goes Flow","subtitle":null,"slug":"denog17-75455-performance-measurement-goes-flow","link":"https://pretalx.com/denog17/talk/YGMU8X/","description":"Do you have probes installed to monitor your network border? Ever struggled to estimate the fallout-perimeter of a probe alerting quality-deterioration? We show an example how to firmly map probes to interconnect points and secondly, how to identify which other traffic is likely affected by the same problem.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Péter György"],"tags":["75455","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":51,"promoted":false,"date":"2025-11-10T14:00:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-04-02T01:15:03.816+02:00","length":1507,"duration":1507,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75455-f8e8103b-2181-5d12-a884-189eb7db4140.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75455-f8e8103b-2181-5d12-a884-189eb7db4140_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75455-f8e8103b-2181-5d12-a884-189eb7db4140.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75455-f8e8103b-2181-5d12-a884-189eb7db4140.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75455-performance-measurement-goes-flow","url":"https://media.ccc.de/public/events/f8e8103b-2181-5d12-a884-189eb7db4140","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"74cf7056-bd29-5dd7-8a9a-adb0834b94d9","title":"Sorry we messed up","subtitle":null,"slug":"denog17-75474-sorry-we-messed-up","link":"https://pretalx.com/denog17/talk/KQ9JWA/","description":"How we route-leaked everything to everyone due to a fun Arista bug.\n\nA post-mortem kind of story about us changing Arista RCF function names, resulting in a global route leak. The talk includes the history of why we intended to make a change, how we rollout configurations, why it resulted in an unexpected behavior and how it was fixed.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Stefan Funke"],"tags":["75474","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":258,"promoted":false,"date":"2025-11-10T15:10:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-20T22:00:09.881+01:00","length":691,"duration":691,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/75474-74cf7056-bd29-5dd7-8a9a-adb0834b94d9.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/75474-74cf7056-bd29-5dd7-8a9a-adb0834b94d9_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/75474-74cf7056-bd29-5dd7-8a9a-adb0834b94d9.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/75474-74cf7056-bd29-5dd7-8a9a-adb0834b94d9.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-75474-sorry-we-messed-up","url":"https://media.ccc.de/public/events/74cf7056-bd29-5dd7-8a9a-adb0834b94d9","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"530294eb-1b0d-5f57-98f8-eb61a760b174","title":"DENOG17 Closing","subtitle":null,"slug":"denog17-81769-denog17-closing","link":"https://pretalx.com/denog17/talk/HLJTHQ/","description":"It's a wrap!\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Patrick Bussmann"],"tags":["81769","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":138,"promoted":false,"date":"2025-11-11T15:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-12T23:15:09.297+01:00","length":1634,"duration":1634,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/81769-530294eb-1b0d-5f57-98f8-eb61a760b174.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/81769-530294eb-1b0d-5f57-98f8-eb61a760b174_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/81769-530294eb-1b0d-5f57-98f8-eb61a760b174.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/81769-530294eb-1b0d-5f57-98f8-eb61a760b174.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-81769-denog17-closing","url":"https://media.ccc.de/public/events/530294eb-1b0d-5f57-98f8-eb61a760b174","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"600486a7-871b-54bb-8c8f-69e3afb37e4b","title":"Forwarding packets at scale - Building a Cloud Data Plane using eBPF/XDP","subtitle":null,"slug":"denog17-78822-forwarding-packets-at-scale-building-a-cloud-data-plane-using-ebpf-xdp","link":"https://pretalx.com/denog17/talk/VNLHD7/","description":"At Hetzner we’ve historically used an Open vSwitch based data plane for connecting hundred thousands of cloud servers to the network. This has served us well for many years and mostly still does. We have however reached some limitations and wanted to improve scalability, resiliency and flexibility with a more specialized data plane that's tailored to our needs while being easy to operate and building a strong foundation for new features.\n\nWhen checking our options back in 2022, the team reached the conclusion that the best path to achieve this goal is to build and maintain our own highly specialized networking stack based on eBPF/XDP, and so we went on a journey to make it reality.\n\nToday, roughly three years later, we’ve implemented a versatile network stack, called `hcnet`, which handles public and private cloud networking (using VXLAN encapsulation), stateful firewalls, and provides DHCP services as well as traffic capture tooling - all of this using XDP with a control plane written in Go.\n\nTo make operation’s life easier, the stack is collecting and exposing meaningful metrics and is designed to self-heal whenever possible. We’ve been using `hcnet` in our internal cloud for two years now, with every new feature getting its first real-world tests there on a daily basis, including customer-facing applications. We are looking forward to a public beta, once we have full feature parity with our existing stack.\n\nIn this talk we want to provide an overview of how we’ve built the new network stack, what challenges we’ve faced and where we're hitting current limitations of XDP. As of today the most pressing challenges are support for offloading and driver maturity in general.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Maximilian Wilhelm","Marcus Wichelmann"],"tags":["78822","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":663,"promoted":false,"date":"2025-11-10T17:10:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-24T09:00:04.760+01:00","length":1687,"duration":1687,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78822-600486a7-871b-54bb-8c8f-69e3afb37e4b.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78822-600486a7-871b-54bb-8c8f-69e3afb37e4b_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78822-600486a7-871b-54bb-8c8f-69e3afb37e4b.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78822-600486a7-871b-54bb-8c8f-69e3afb37e4b.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78822-forwarding-packets-at-scale-building-a-cloud-data-plane-using-ebpf-xdp","url":"https://media.ccc.de/public/events/600486a7-871b-54bb-8c8f-69e3afb37e4b","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8","title":"Uncovering Blackholes: Advanced Detection Techniques for Complex Networks","subtitle":null,"slug":"denog17-74351-uncovering-blackholes-advanced-detection-techniques-for-complex-networks","link":"https://pretalx.com/denog17/talk/GJNTXH/","description":"Blackholing events often have prolonged impacts and typically require manual intervention for recovery. Even a single occurrence is highly disruptive, frequently triggering executive-level escalations. Resolving such incidents demands top-tier expertise and often involves engagement with the vendor’s advanced technical support.\n\nTo accelerate root cause identification, we present several methods for detecting blackholing events, identifying the affected transit flows, and analyzing potential correlations. This approach aims to reduce response times and improve overall network resilience.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Anton Elita"],"tags":["74351","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":76,"promoted":false,"date":"2025-11-11T09:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-02-13T11:30:08.543+01:00","length":1472,"duration":1472,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/74351-4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/74351-4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/74351-4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/74351-4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-74351-uncovering-blackholes-advanced-detection-techniques-for-complex-networks","url":"https://media.ccc.de/public/events/4a9e9486-17c3-5dbf-9f7c-8cddb97ca7c8","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"60f6ff65-3c50-58a5-bc73-6ba9407d62ef","title":"PPPoE vs IPoE: A Practical Guide for ISPs","subtitle":null,"slug":"denog17-73667-pppoe-vs-ipoe-a-practical-guide-for-isps","link":"https://pretalx.com/denog17/talk/RMB983/","description":"**Is PPPoE really legacy? Is IPoE really better? And what actually happens when something breaks?**\n\nThis talk takes a hands-on look at PPPoE and IPoE (DHCPv4/v6) in real ISP environments, based on actual deployments, not just specs. We’ll walk through the key operational differences that show up when things get serious: high availability, failover, MTU handling, multicast, and how dual-stack plays out in practice.\n\nWe’ll also dive into the hidden pain points, like why hardware offloading fails in unexpected places, why VLAN models (N:1 vs 1:1) must be considered here, and how session state behaves when routers crash or links go dark.\n\nThere’s no silver bullet, but you’ll leave this session with a clear picture of the trade-offs. Whether operating PPPoE or IPoE, or stuck managing both, this talk gives you the good, the bad, and the “we didn’t see that one coming”.\n\nIf you’ve ever had to troubleshoot weird subscriber issues at 2 AM or explain to management why “it’s complicated”, this talk is for you.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Christian Giese"],"tags":["73667","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":307,"promoted":false,"date":"2025-11-11T10:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-04T19:00:04.752+02:00","length":1973,"duration":1973,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/73667-60f6ff65-3c50-58a5-bc73-6ba9407d62ef.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/73667-60f6ff65-3c50-58a5-bc73-6ba9407d62ef_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/73667-60f6ff65-3c50-58a5-bc73-6ba9407d62ef.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/73667-60f6ff65-3c50-58a5-bc73-6ba9407d62ef.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-73667-pppoe-vs-ipoe-a-practical-guide-for-isps","url":"https://media.ccc.de/public/events/60f6ff65-3c50-58a5-bc73-6ba9407d62ef","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"cd4cd577-b389-5738-93b1-8942fd39b262","title":"Going Large: Extended Route Targets or Extended Confusion?","subtitle":null,"slug":"denog17-84571-going-large-extended-route-targets-or-extended-confusion","link":"https://pretalx.com/denog17/talk/JVGJ8S/","description":"Conventional BGP Route-Targets are not large enough for modern large-scale eBGP-only EVPN-VXLAN fabrics. We will look into a new type of Route Target I propose, the \"Extended Route Target\" based on BGP Large Communities\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Robin Christ"],"tags":["84571","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":109,"promoted":false,"date":"2025-11-11T15:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-01T23:45:05.444+02:00","length":591,"duration":591,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/84571-cd4cd577-b389-5738-93b1-8942fd39b262.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/84571-cd4cd577-b389-5738-93b1-8942fd39b262_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/84571-cd4cd577-b389-5738-93b1-8942fd39b262.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/84571-cd4cd577-b389-5738-93b1-8942fd39b262.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-84571-going-large-extended-route-targets-or-extended-confusion","url":"https://media.ccc.de/public/events/cd4cd577-b389-5738-93b1-8942fd39b262","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"5b948795-f2cb-5ef5-a60f-25e120e2a7e8","title":"Channelmania! – future proof your DWDM network topology while keeping it flexible for 1.6T","subtitle":null,"slug":"denog17-79056-channelmania-future-proof-your-dwdm-network-topology-while-keeping-it-flexible-for-1-6t","link":"https://pretalx.com/denog17/talk/8N7Q3A/","description":"Past approaches for maximizing the data capacity per fiber pair went for running more and more DWDM channels with grid spacings as small as possible. This meant that grid spacings shrank from 200GHz to 100Ghz and then 50GHz with some applications even going for 25Ghz. In recent years the bandwidth per channel kept increasing, as complex modulation schemes came into favor over ON-OFF-Keying which has been a staple in fiber optic communication for decades. Those increased per channel bandwidths of 400Gbps, 800Gbps and now pushing into the 1.6Tbps realm demand for lager grids to accommodate the spectrum necessary to operate such “Superchannels”. Especially the fact of coherent detection being “blind” to anything but its own wavelength has enabled interesting topologies that can omit filters altogether. Of course that comes at a cost of reduced flexibility. Learn how you can harvest some of those benefits by moving to 400GHz filters while keeping a lot of your flexibility. Keep your 10Gbps and below legacy signals on the same fiber as your fast stuff and easily reassign your bandwidth without the cost ROADMs.\nMade by FLEXOPTIX Research - Gert and Thomas.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Thomas Weible"],"tags":["79056","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":97,"promoted":false,"date":"2025-11-10T17:10:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-17T10:00:05.956+01:00","length":1463,"duration":1463,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79056-5b948795-f2cb-5ef5-a60f-25e120e2a7e8.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79056-5b948795-f2cb-5ef5-a60f-25e120e2a7e8_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79056-5b948795-f2cb-5ef5-a60f-25e120e2a7e8.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79056-5b948795-f2cb-5ef5-a60f-25e120e2a7e8.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79056-channelmania-future-proof-your-dwdm-network-topology-while-keeping-it-flexible-for-1-6t","url":"https://media.ccc.de/public/events/5b948795-f2cb-5ef5-a60f-25e120e2a7e8","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"6770447e-b58f-56f7-ac59-e7373336b868","title":"Ultra Ethernet: Addressing AI/HPC Interconnect Challenges Beyond the InfiniBand Monopoly","subtitle":null,"slug":"denog17-78799-ultra-ethernet-addressing-ai-hpc-interconnect-challenges-beyond-the-infiniband-monopoly","link":"https://pretalx.com/denog17/talk/W8W77A/","description":"For years, InfiniBand has dominated high-performance interconnects. Yet for strategic and technical reasons, there has been a huge industry ask to develop a new next-generation protocol for use in AI and HPC environments. This session introduces Ultra Ethernet, an innovative standard designed to tackle the limitations seen in RDMA around scalability, latency and congestion management, crucial for democratizing future AI/HPC build outs. Join us for a comprehensive exploration of the technologies poised to redefine Storage or GPU interconnectivity and challenge the status quo.\nWe also discuss the future of the UEC and how collaboration among standards organizations will benefit the industry.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Andreas Roeder"],"tags":["78799","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":89,"promoted":false,"date":"2025-11-10T16:40:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-04-02T02:00:03.712+02:00","length":1612,"duration":1612,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78799-6770447e-b58f-56f7-ac59-e7373336b868.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78799-6770447e-b58f-56f7-ac59-e7373336b868_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78799-6770447e-b58f-56f7-ac59-e7373336b868.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78799-6770447e-b58f-56f7-ac59-e7373336b868.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78799-ultra-ethernet-addressing-ai-hpc-interconnect-challenges-beyond-the-infiniband-monopoly","url":"https://media.ccc.de/public/events/6770447e-b58f-56f7-ac59-e7373336b868","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"a4d1e8b1-f1d9-5f7a-aca9-f778253873f7","title":"Slow network, fast money: How Deutsche Telekom breaks the internet","subtitle":null,"slug":"denog17-70804-slow-network-fast-money-how-deutsche-telekom-breaks-the-internet","link":"https://pretalx.com/denog17/talk/8NGPVU/","description":"In Europe, net neutrality is a principle enshrined in EU law which states that all data on the internet should be treated equally - but what happens when large providers such as Deutsche Telekom systematically violate it with their interconnection practices? \n\nThe Netzbremse project documents an alarming case: millions of Deutsche Telekom customers are experiencing artificial throttling of their connection because Telekom refuses to expand its peering capacities appropriately. As the only internet provider in Germany, users and network operators have to pay at both ends of the line to avoid congestion. The result: massive quality losses in video streaming, gaming and online conferencing - especially in the evening. Network operators and content providers who are not prepared to pay for an uncongested connection suffer from poor service quality. An alliance of consumer protection, civil society and research is now taking action against this direct attack on the open and free internet.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Thomas Lohninger"],"tags":["70804","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":1815,"promoted":false,"date":"2025-11-11T11:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-05T09:00:04.930+02:00","length":1982,"duration":1982,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/70804-a4d1e8b1-f1d9-5f7a-aca9-f778253873f7.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/70804-a4d1e8b1-f1d9-5f7a-aca9-f778253873f7_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/70804-a4d1e8b1-f1d9-5f7a-aca9-f778253873f7.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/70804-a4d1e8b1-f1d9-5f7a-aca9-f778253873f7.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-70804-slow-network-fast-money-how-deutsche-telekom-breaks-the-internet","url":"https://media.ccc.de/public/events/a4d1e8b1-f1d9-5f7a-aca9-f778253873f7","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"3e2598b2-db93-5cca-9a41-c549736ecf33","title":"Entering the big Cloud Game: A journey of ups and downs towards sovereignity at scale","subtitle":null,"slug":"denog17-78872-entering-the-big-cloud-game-a-journey-of-ups-and-downs-towards-sovereignity-at-scale","link":"https://pretalx.com/denog17/talk/F9DVEL/","description":"This talk would be held by my two colleagues: Michael Bayr (artcodix) and Gerhard Bader (Yorizon Cloud)\n\nYorizon Cloud is the joint venture of HOCHTIEF PPP Solutions and Thomas-Krenn.AG\n\nIn these times of global political and technical threats and disruptions, we are driven by our spirit of digital sovereignty when we design a new European, de-centralized, sustainable and custom-made cloud infrastructure.\n\nIn their talk, my two colleagues would give an insight into the technologies we apply, open source based and European to the core. One basic focus will be the network technology and the standardized stack that we use.\n\nWe will be happy to present this talk at DENOG17, feel free to contact me personally if you would like to get in touch with our two potential speakers.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Michael Bayr","Gerhard Bader"],"tags":["78872","2025","denog17","Saal B","denog17-eng","Day 2"],"view_count":183,"promoted":false,"date":"2025-11-10T11:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-23T12:30:16.051+01:00","length":1669,"duration":1669,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78872-3e2598b2-db93-5cca-9a41-c549736ecf33.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78872-3e2598b2-db93-5cca-9a41-c549736ecf33_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78872-3e2598b2-db93-5cca-9a41-c549736ecf33.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78872-3e2598b2-db93-5cca-9a41-c549736ecf33.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78872-entering-the-big-cloud-game-a-journey-of-ups-and-downs-towards-sovereignity-at-scale","url":"https://media.ccc.de/public/events/3e2598b2-db93-5cca-9a41-c549736ecf33","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"83974bbd-2475-5cec-9e25-057a37267fba","title":"An introduction to qGIS for current Google Earth Users","subtitle":null,"slug":"denog17-79909-an-introduction-to-qgis-for-current-google-earth-users","link":"https://pretalx.com/denog17/talk/HFMA8N/","description":"The defacto standard in network planning is to use Google Earth for dealing with a large collection of kmz and kml files that are provided by partners. Sadly this can quickly introduce spontaneous combustion of your computer or at least of google earth, as the data collection can grow quite quickly and that software as probably never meant to deal with such an enourmous amount of geodata.\nLuckliy there is a widely adopted open source GIS software called qGIS that can help with exploring large amounts of data. I will give a quick intro what shortcuts, plugins and quirks you can utilize to use qGIS for your KMZ Collection and do a \"first steps for people in the network industry\" tutorial.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Christian Dieckhoff"],"tags":["79909","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":234,"promoted":false,"date":"2025-11-11T11:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-31T09:30:07.605+02:00","length":1492,"duration":1492,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79909-83974bbd-2475-5cec-9e25-057a37267fba.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79909-83974bbd-2475-5cec-9e25-057a37267fba_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79909-83974bbd-2475-5cec-9e25-057a37267fba.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79909-83974bbd-2475-5cec-9e25-057a37267fba.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79909-an-introduction-to-qgis-for-current-google-earth-users","url":"https://media.ccc.de/public/events/83974bbd-2475-5cec-9e25-057a37267fba","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"f1e572e4-bd44-53d3-a940-5d35597d8e44","title":"EVPN for the rest of us – what happens when software people try to use EVPN","subtitle":null,"slug":"denog17-78820-evpn-for-the-rest-of-us-what-happens-when-software-people-try-to-use-evpn","link":"https://pretalx.com/denog17/talk/BWHD38/","description":"Last year we migrated our datacentre networks from a flat layer 2-based architecture to EVPN-VXLAN. As an organisation whose primary technical background is in software, a network project of this complexity has been a journey into new and uncharted territory.\n\nOur previous network design had been showing signs of reaching its limits for several years, so in late 2023 we started designing a replacement based on EVPN-VXLAN, terminated directly on our Linux hypervisors. After not quite nine months of development the project culminated in an intensive week-long migration in our production datacentre – with zero downtime for our customers.\n\nIn this talk I'll explore our experiences developing and operating an EVPN-based network in production coming from a software background, including debugging tales from the lab and some of our more peculiar technical decisions, as well as the unexpected surprises along the way and ongoing pain points we're still dealing with a year down the line. What *does* happen when software people try to use EVPN anyway?\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Molly Miller"],"tags":["78820","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":498,"promoted":false,"date":"2025-11-10T14:00:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-04-01T00:00:09.918+02:00","length":1316,"duration":1316,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78820-f1e572e4-bd44-53d3-a940-5d35597d8e44.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78820-f1e572e4-bd44-53d3-a940-5d35597d8e44_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78820-f1e572e4-bd44-53d3-a940-5d35597d8e44.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78820-f1e572e4-bd44-53d3-a940-5d35597d8e44.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78820-evpn-for-the-rest-of-us-what-happens-when-software-people-try-to-use-evpn","url":"https://media.ccc.de/public/events/f1e572e4-bd44-53d3-a940-5d35597d8e44","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"e3ff3c2a-7be4-535f-af38-eddc05db857e","title":"Merging Service Provider Networks","subtitle":null,"slug":"denog17-72761-merging-service-provider-networks","link":"https://pretalx.com/denog17/talk/L7TDFF/","description":"As the German service provider market slowly consolidates, network engineers and architects will increasingly face the complex challenge of merging service provider networks. This technical talk dives into the intricacies of integrating distinct IP/MPLS network infrastructures, focusing on practical considerations and potential pitfalls. Based on past experience, we will discuss the general approach to such a project, key architectural considerations, and challenges related to routing protocols and vendor interoperability.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Markus Jungbluth","Bastian Hoss"],"tags":["72761","2025","denog17","Saal A","denog17-eng","Day 3"],"view_count":140,"promoted":false,"date":"2025-11-11T14:30:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-07T00:30:05.461+01:00","length":1797,"duration":1797,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/72761-e3ff3c2a-7be4-535f-af38-eddc05db857e.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/72761-e3ff3c2a-7be4-535f-af38-eddc05db857e_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/72761-e3ff3c2a-7be4-535f-af38-eddc05db857e.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/72761-e3ff3c2a-7be4-535f-af38-eddc05db857e.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-72761-merging-service-provider-networks","url":"https://media.ccc.de/public/events/e3ff3c2a-7be4-535f-af38-eddc05db857e","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"6e8f9102-b5a1-541f-83c2-cc27e1ae4d66","title":"400G ZR+ BiDi does not exist, it can't hurt you. Or can it?","subtitle":null,"slug":"denog17-78260-400g-zr-bidi-does-not-exist-it-can-t-hurt-you-or-can-it","link":"https://pretalx.com/denog17/talk/KLXJS8/","description":"As it's common practice, each new hacker event needs something weird and funky. For this years summer camp in the Netherlands called WHY2025, we build a 400G link over a single fibre. Since 400G BiDi does not exist (yet), we had to get creative and built something, which might be considered out of spec.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Nicola von Thadden (aka nicoduck)","Arjan Koopen"],"tags":["78260","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":208,"promoted":false,"date":"2025-11-10T15:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-04-01T23:30:04.766+02:00","length":705,"duration":705,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78260-6e8f9102-b5a1-541f-83c2-cc27e1ae4d66.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78260-6e8f9102-b5a1-541f-83c2-cc27e1ae4d66_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78260-6e8f9102-b5a1-541f-83c2-cc27e1ae4d66.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78260-6e8f9102-b5a1-541f-83c2-cc27e1ae4d66.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78260-400g-zr-bidi-does-not-exist-it-can-t-hurt-you-or-can-it","url":"https://media.ccc.de/public/events/6e8f9102-b5a1-541f-83c2-cc27e1ae4d66","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"64835dc7-8865-59e8-99cd-ee976ae612c7","title":"Understanding and optimising transceiver efficiency using internal metrics for improved power savings","subtitle":null,"slug":"denog17-78665-understanding-and-optimising-transceiver-efficiency-using-internal-metrics-for-improved-power-savings","link":"https://pretalx.com/denog17/talk/NRBPX9/","description":"In high-performance optical communication systems transceiver health and efficiency are critical to network reliability and energy consumption. This presentation explores the powerful capabilities of Versatile Diagnostics Monitoring (VDM) features found in modern optical transceivers (beyond the speed of 100G) with a particular focus on the Thermoelectric Cooler (TEC) current metrics. By analysing TEC current alongside temperature and cable length data we should be able to identify the optimal operating conditions that will minimise power consumption while maintaining performance. In order to prove this thesis we developed a couple of software prototypes to perform the data analysis. Using real-world VDM data this talk will demonstrate how to evaluate and visualise transceiver efficiency in terms of Watts, uncovering practical insights for engineers aiming to design or operate greener, more efficient optical networks and finally save energy.\nMade by FLEXOPTIX Research - Gerhard and Thomas.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Dr. Gerhard Stein"],"tags":["78665","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":54,"promoted":false,"date":"2025-11-10T14:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-03-25T10:45:06.815+01:00","length":1628,"duration":1628,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78665-64835dc7-8865-59e8-99cd-ee976ae612c7.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78665-64835dc7-8865-59e8-99cd-ee976ae612c7_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78665-64835dc7-8865-59e8-99cd-ee976ae612c7.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78665-64835dc7-8865-59e8-99cd-ee976ae612c7.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78665-understanding-and-optimising-transceiver-efficiency-using-internal-metrics-for-improved-power-savings","url":"https://media.ccc.de/public/events/64835dc7-8865-59e8-99cd-ee976ae612c7","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"cf2d0d16-27ae-5717-80ec-f926f270294d","title":"Evolving Inter.link's Software Delivery: Lessons in Fast, Consistent, and Safe Deployments","subtitle":null,"slug":"denog17-78781-evolving-inter-link-s-software-delivery-lessons-in-fast-consistent-and-safe-deployments","link":"https://pretalx.com/denog17/talk/RZJPC9/","description":"Automation is at the heart of Inter.link's operations. Our team manages complex software that automates the entire customer journey, from correctly accepting orders for services such as IP Transit or DDoS and translating them into precise network configurations, to setting up billing and robust monitoring. This automation is critical, allowing us to rapidly develop and deploy new features while maintaining operational excellence.\n\nAchieving this level of automation required investment in our software environment and tooling. Over time, we have significantly evolved our tooling, emphasizing easy and consistent environment setups, and we have implemented robust CI/CD pipelines that ensure changes are delivered to our customers safely, consistently, and quickly.\n\nIn this talk, we will provide a behind-the-scenes look at Inter.link's software stack. We will then explore challenges we faced that impeded quick, consistent and safe deployments, and how they informed and evolved our software environment. We will show the solutions we adopted, and how they became principles that provide guidance for the team. We will also finish off with a glimpse into some of our future initiatives.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Poh"],"tags":["78781","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":103,"promoted":false,"date":"2025-11-10T11:30:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-02-06T00:30:06.496+01:00","length":1966,"duration":1966,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/78781-cf2d0d16-27ae-5717-80ec-f926f270294d.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/78781-cf2d0d16-27ae-5717-80ec-f926f270294d_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/78781-cf2d0d16-27ae-5717-80ec-f926f270294d.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/78781-cf2d0d16-27ae-5717-80ec-f926f270294d.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-78781-evolving-inter-link-s-software-delivery-lessons-in-fast-consistent-and-safe-deployments","url":"https://media.ccc.de/public/events/cf2d0d16-27ae-5717-80ec-f926f270294d","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"729fdc99-6e19-5074-a5e9-9484773882ba","title":"Day 1 Closing","subtitle":null,"slug":"denog17-81768-day-1-closing","link":"https://pretalx.com/denog17/talk/MVDVUL/","description":"That's a wrap on Day1, time for the social!\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Tim Kleefass"],"tags":["81768","2025","denog17","Saal A","denog17-eng","Day 2"],"view_count":29,"promoted":false,"date":"2025-11-10T17:40:00.000+01:00","release_date":"2025-11-10T00:00:00.000+01:00","updated_at":"2026-01-25T00:45:13.423+01:00","length":340,"duration":340,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/81768-729fdc99-6e19-5074-a5e9-9484773882ba.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/81768-729fdc99-6e19-5074-a5e9-9484773882ba_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/81768-729fdc99-6e19-5074-a5e9-9484773882ba.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/81768-729fdc99-6e19-5074-a5e9-9484773882ba.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-81768-day-1-closing","url":"https://media.ccc.de/public/events/729fdc99-6e19-5074-a5e9-9484773882ba","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"1759d9a8-251d-59aa-a189-ec603f9b358f","title":"Baremetal Server Management with Redfish","subtitle":null,"slug":"denog17-79083-baremetal-server-management-with-redfish","link":"https://pretalx.com/denog17/talk/79G7TQ/","description":"Managing bare metal servers has always been quite time-consuming and prone to errors. Manual steps are required to configure the BMC, adjust BIOS settings, and, if necessary, perform firmware updates. If you have many servers to manage, you have to repeat everything on each individual server which likely to cause errors and diverging configurations.\n\nWe have been working for some time to automate all of this with Redfish. OpenStack Ironic helps with this, among other things, but it does not work out-of-the-box with all hardware. Unfortunately, most manufacturers believe that the Redfish standard should be implemented differently or some endpoints are not necessary.\n\nIn this talk, I will provide insight into the experience we have gained, how far we are currently, and what we still have planned.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Matthias Haag"],"tags":["79083","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":160,"promoted":false,"date":"2025-11-11T11:10:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-04-05T03:00:02.868+02:00","length":598,"duration":598,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79083-1759d9a8-251d-59aa-a189-ec603f9b358f.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79083-1759d9a8-251d-59aa-a189-ec603f9b358f_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79083-1759d9a8-251d-59aa-a189-ec603f9b358f.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79083-1759d9a8-251d-59aa-a189-ec603f9b358f.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79083-baremetal-server-management-with-redfish","url":"https://media.ccc.de/public/events/1759d9a8-251d-59aa-a189-ec603f9b358f","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"da13d2f0-a6da-5e9a-9771-f77ddcd7b33d","title":"The return of EGP or the curious case of the BGP Origin attribute","subtitle":null,"slug":"denog17-79498-the-return-of-egp-or-the-curious-case-of-the-bgp-origin-attribute","link":"https://pretalx.com/denog17/talk/ASAQKE/","description":"The BGP Origin attribute has been around for decades and did not attract much attention. It is simply there, shown either as \"?\" for \"incomplete\" or as \"i\" for IGP.\n\nDuring writing slides for my BGP training I found a large number (868) of prefixes in the global routing table tagged with \"e\" for EGP. The presentation does not give any answers but simply raises the question who and why is playing with that attribute.\n\nLicensed to the public under http://creativecommons.org/licenses/by/4.0","original_language":"eng","persons":["Wolfgang Tremmel"],"tags":["79498","2025","denog17","Saal B","denog17-eng","Day 3"],"view_count":68,"promoted":false,"date":"2025-11-11T11:00:00.000+01:00","release_date":"2025-11-11T00:00:00.000+01:00","updated_at":"2026-03-19T13:45:11.816+01:00","length":586,"duration":586,"thumb_url":"https://static.media.ccc.de/media/events/denog/denog17/79498-da13d2f0-a6da-5e9a-9771-f77ddcd7b33d.jpg","poster_url":"https://static.media.ccc.de/media/events/denog/denog17/79498-da13d2f0-a6da-5e9a-9771-f77ddcd7b33d_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/denog/denog17/79498-da13d2f0-a6da-5e9a-9771-f77ddcd7b33d.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/denog/denog17/79498-da13d2f0-a6da-5e9a-9771-f77ddcd7b33d.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/denog17-79498-the-return-of-egp-or-the-curious-case-of-the-bgp-origin-attribute","url":"https://media.ccc.de/public/events/da13d2f0-a6da-5e9a-9771-f77ddcd7b33d","conference_title":"DENOG17","conference_url":"https://media.ccc.de/public/conferences/denog17","related":[]},{"guid":"d5dbc81b-5d4b-54de-8d75-596d00b8b72c","title":"Security.txt across the industry","subtitle":null,"slug":"denog17-75240-security-txt-across-the-industry","link":"https://pretalx.com/denog17/talk/WKBJGE/","description":"This talk explores the adoption of `security.txt`, as defined in [RFC 9116](https://www.rfc-editor.org/rfc/rfc9116),  that enables websites to publish security contact information in a consistent and accessible way. 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