This week we learn why Wi-Fi 6 GHz improves high density 📍; journey to CCIE Network Automation with Python reports 🐍; avoid the Azure Private Subnet IPageddon 💥; extend Broadband speeds with less than 0.1 dBm/km 🛣️; replay historical BGP Network Events like a VCR 🎥; measure the impact of AI on Developer productivity in 2025 📉; compare MCP vs RAG for AI interaction 🤖 and see how Apple’s CarPlay actually works under the trunk 🚗. Let’s dive in; ⬇️
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NetEng 🔧
Why 6 GHz Wi-Fi Is Already Improving High Density Networks is fairly short, but concise about the differences between 2.4, 5 and 6 GHz in high-density Wireless deployments 🛜
Curious case of sub-optimal performance digs into why your new AI Network Fabric and GPU Clusters might not be working as expected, with maths and useful RDMA concepts to back it up 🤔
The Case for Immutable Network Configuration dives into what might happen if you embrace true DevOps approaches for your network and get rid of the hand-crafted, “pets” approach and go for replaceable, “cattle” approach for the benefits 🐄
802.11be/EHT/Wi-Fi 7 Frame Format and the Use of Content Channels will help you catch up with changes in Wi-Fi 7 PHY layer than enable increased performance and throughput 📡
My Journey to CCIE Automation – Week 4 Automating Network Discovery and Reports with Python & Ansible is the latter part of this series and digs into Network Lifecycle reporting and use cases 🔂
Netlab - The Fastest Way to Build Network Labs with added advantage of being able to quickly version control and revert them by going back to
lab2-that-worked-FINAL.yamlin a jiffy 👍Azure Private Subnet and IPageddon covers what happens when Azure Default Outbound Internet Access finally dies, and you’ve got a mixture of Public or Private Subnet-defined VNETs 💥
Broadband optical fibre with an attenuation lower than 0.1 decibel per kilometre is the thing that’s going to keep your FTTP and FTTC humming at unholy speeds and have you thinking back to the days of 512 Kbps DOCSIS in horror 🚄
Videos, Tools and Papers 🎓⚒️
🏦 Cisco U - Free CE Credits
💡 Re-certify your CCNA or CCNP with these free Cisco U courses.
Cisco U: Introduction to Network Simulations with CML (CMLLAB)
(Course, 6 CE Credits, 8h 30m)Cisco U: Understanding Cisco Network Automation Essentials (DEVNAE)
(Course, 16 CE Credits, 28h 40m)Cisco U: Managing Cisco Network Operating Systems (CNIOS)
(Course, 37 CE Credits, 37h 15m)
🎓 Network Engineer Learning
THIS Is Where the Internet Lives
(Video, 18 mins, Beginner)BGP Replay – Analyze historical BGP events
(Tool, BGP, Internet Peering)Breaking the Sorting Barrier for Directed Shortest Paths
(Paper, OSPF, 17-pages)netSSL - web-based dashboard for SSL certificate management
(Tool, GitHub, SSL Certs)
Hiring 💼
📢 The Reload in 10 Jobs Board is here 🥳, with a hand-picked selection of awesome Network Engineering, NetDevOps and Network Automation jobs.
It’s also free to list a job if you’re hiring and want to let us know 👂
🔥 This week’s Hot Hirings
🇩🇪 Network Automation Engineer @ ABB, India, Bengaluru
🇬🇧 Senior Network Engineer @ Mastercard, UK, Dunstable
🇬🇧 Network Operations Engineer @ Barclays, UK, Knutsford
🇺🇸 Senior Network Engineer @ Wells Fargo, USA, NC
🇩🇪 Network Security Research Architect @ NVIDIA, Germany, Munich
🇮🇳 Senior Network Engineer @ Google, India, Bengaluru
🇮🇪 Staff Network Development Engineer @ ServiceNow, Ireland, Dublin
🇳🇴 Network Engineer @ Mastercard, Norway, Oslo
🇬🇧 Networks Architect @ Harbour Energy, UK, Aberdeen
🇺🇸 Network Site Reliability Engineer @ NVIDIA, USA, CA
NotEng 🤔
Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity it actually makes most organisations slower and not faster, when you look at the whole lifecycle 🛣️
Where's the Shovelware? Why AI Coding Claims Don't Add Up builds on this with more research saying there isn’t actually a goldrush of coding happening for the AI shovels to help with, it’s more or less the same as now ⛲️
MCP vs RAG: A Practical Guide for Data Engineers and AI Builders same idea, different approach; all about getting LLMs to interact with the rest of the world 🦿
%CPU Utilization Is A Lie and in your heart, you knew that was the case as soon as Intel released HT back in the day; it no longer makes sense to focus on just the raw percentage when most workloads change at the half-way point 📈
How does Apple’s wireless CarPlay actually work? is something you might have wondered after plugging it into your car’s USB port, after all, it’s just networking… right? 🚗
MCP (Model Context Protocol): Simply explained in 5 minutes is the head start you need to start playing with these for your Network Automation - hey, could we call that AItomation? - efforts 🦸
The fast path/slow path mirage, what it means when caching layers are present, and why it might actually work against you in practice 💀
Events 📅
🤜 Meet-ups
London Network Automation Meetup, London, 9 October 2025
NetLdn, London, Monthly, Every 2nd Thursday
NetMcr, Manchester, Every Monthly, 2nd Thursday
NetBCN, Barcelona, See schedule
📢 Conferences
🎩 Hat-tip to the wonderful Pete Crocker @ OpsMill for the help
European Peering Forum, Bucharest, 15 - 17 September 2025
Cambridge Tech Week, Cambridge, 15 - 19 September 2025
FutureNet Asia, Singapore, 16 - 17 September 2025
Juniper AI-Native NOW, Copenhagen, 23 September 2025
Enterprise Tech Leadership Summit, Las Vegas, 23 - 25 September 2025
BalticNOG 2025, Vilnius, 24 - 25 September 2025
NLNOG, Amsterdam, 30 September 2025
DTX London, London, 1 - 2 October 2025
Network X, Paris, 14 - 16 October 2025
OpenInfra Summit Europe, Paris, 17 - 19 October 2025
RIPE 91, Bucharest, 20 - 24 October, 2025
ESNOG, Barcelona, 30 - 31 October 2025
DENOG 17, Essen, 9 - 11 November 2025
EMEA Arista Cloud Builders, Munich, 13 November 2025
AutoCon 4, Austin, 17 - 21 November 2025
CoNEXT 2025, Hong Kong, 1 - 4 December 2025
Industry 🏭
Subsea Cables Parted in Red Sea Again which is why most of Asia feels sloooow at present 🐌
CISA Flags TP-Link Router Flaws CVE-2023-50224 and CVE-2025-9377 as Actively Exploited even though they’re EoS, there will be plenty of these lurking in the wild 🐗
Insider Inter.link’s automation - deprecating Ansible gives an opinionated view on why the ISP went a different way for Network Automation, and how they’re doing this in practice 👓
Akamai Enables Post-Quantum Cryptography on the Edge, which is gonna make your choice of ESP and AH encapsulation for IPsec real interesting from now on; best get a wide-screen monitor deployed on the side for that dropdown… 🛹
MystRodX Leveraging DNS and ICMP to Steal Sensitive Data From Hacked Systems via text-hiding-in-the-payload methods that would make DNS Tunnelling blush 😳
That’s all for this week, but if you have any tip-offs, blogs, events or job posts you’d like us to feature then please feel free to let us know at newsletter@reloadin.net 📮 and we’ll see if we can add them in 💬.