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PODCAST

Chaos Computer Club - recent audio-only feed

Der Chaos Computer Club ist die größte europäische Hackervereinigung, und seit über 25 Jahren Vermittler im Spannungsfeld technischer und sozialer Entwicklungen.

technology

All Episodes

00:07:59

Th3 Flock of Bird s (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. Get some numbers in comparison with other routing stacks. Let's take a quick look on the shiny new feathers Bird prepared for us. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/XRVTP3/

00:11:31

Sorry we messed up (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

How we route-leaked everything to everyone due to a fun Arista bug. A 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. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/KQ9JWA/

00:25:56

200 GbE network processing with 100 W - or "can I...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. First, 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. Then, focus is on how offloading network tasks is a particularly beautiful example of the advantages of hardware-implementing logic, with examples like TCP offloading,

00:09:59

Security.txt across the industry (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. We begin with a brief introduction to the RFC and the motivation behind standardized vulnerability disclosure. But is this even important to the network industry? To find out, we conclude with a focused analysis of security.txt adoption among organizations represented by this

00:27:08

Understanding and optimising transceiver efficiency...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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

00:24:50

"What can possibly go wrong?" Stories of...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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

00:25:07

Performance measurement goes Flow (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/YGMU8X/

00:21:56

EVPN for the rest of us – what happens when software...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. Our 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

00:32:46

Evolving Inter.link's Software Delivery: Lessons in...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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. Achieving this level of automation required investment in our

00:27:49

Entering the big Cloud Game: A journey of ups and...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

This talk would be held by my two colleagues: Michael Bayr (artcodix) and Gerhard Bader (Yorizon Cloud) Yorizon Cloud is the joint venture of HOCHTIEF PPP Solutions and Thomas-Krenn.AG In 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. In their talk, my two colleagues would give an insight into the technologies we apply, open

00:24:56

QoE Matters – How Application-Level Monitoring...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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

00:31:49

EVPN Flex Cross Connect - L2 P2P VPNs can be agile as...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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.EVPN 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. The 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

00:28:34

Edge-of-Your-Seat Streaming: inside waipu’s...

Chaos Computer Club - recent audio-only feed ·

2025/11/10

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

00:23:05

DENOG17 Opening (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

Welcome to DENOG17! Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/YPAXF8/

00:15:24

Newcommer Session (denog17)

Chaos Computer Club - recent audio-only feed ·

2025/11/10

Welcome to your first DENOG conference. In this session, we will guide you through the community, the event and everything DENOG! Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog17/talk/KFLJDB/

00:03:59

Partypaka (jh25)

Chaos Computer Club - recent audio-only feed ·

2025/11/02

Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

00:06:06

Lautstärke messen (im Klassenzimmer) (jh25)

Chaos Computer Club - recent audio-only feed ·

2025/11/02

Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

00:05:19

Daily Guide (jh25)

Chaos Computer Club - recent audio-only feed ·

2025/11/02

Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

00:04:40

Lama Script (jh25)

Chaos Computer Club - recent audio-only feed ·

2025/11/02

Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

00:09:34

Schüli Cloud (jh25)

Chaos Computer Club - recent audio-only feed ·

2025/11/02

Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

2,784 results

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