swinog

swinog@lists.swinog.ch

1 participants
2984 discussions

IANA AS Numbers Registry Update
by David Dong 03 Jun '26

03 Jun '26

Hi, The IANA AS Numbers registry has been updated to reflect the allocation of the following blocks to the RIPE NCC: 216476-217499 Assigned by RIPE NCC 2026-06-01 217500-218523 Assigned by RIPE NCC 2026-06-01 218524-219547 Assigned by RIPE NCC 2026-06-01 You can find the registry at: https://www.iana.org/assignments/as-numbers/ The allocation was made in accordance with the Policy for Allocation of ASN Blocks to Regional Internet Registries: https://www.icann.org/resources/pages/global-policy-asn-blocks-2010-09-21-en Best Regards, David Dong IANA Services Sr. Specialist

1 0

Intro and quick note on hardware availability
by Francis Richter 26 May '26

26 May '26

Hi all, I was at the last SWINOG and enjoyed the sessions and general exchange. Lately I have been seeing more cases where hardware availability is starting to influence design decisions again. Not at the level of the worst supply chain period, but still enough that lead times or platform shortages are pushing teams to look at alternatives. One example that came up recently was a network refresh where specific switching models were on long delivery. Instead of delaying the rollout, part of the design was adjusted to use already available gear, including refurbished units of the same platform, to stay consistent with the existing environment. It worked well as a bridge and avoided introducing a completely different vendor or OS layer. In general it feels like extending lifecycle and mixing new with existing hardware is becoming a bit more accepted again, especially when it avoids unnecessary complexity. I am working at Circular IT, where we spend most of our time sourcing network, compute and storage hardware, both refurbished and new, including kit that is no longer easy to get through standard channels. So I see these patterns quite often from the supply side as well. Curious how others here are handling refresh cycles and availability at the moment. Are you adjusting designs, or mostly sticking to standard procurement paths? Best regards, Francis Best regards, Circular IT group Joop Geesinkweg 801 1096 AZ Amsterdam Netherlands +49 39 292 714 976 Francis Richter Account Manager We make IT circular Your go-to partner for Circular ITAD, Circular Workplace, Circular IT Infra – safe, secure, compliant and impactful. Visit circularitgroup.com

1 0

Selling some Network-related gear (32x100G SN3700C, some NICs, and so on)
by civil.over＠gmail.com 25 May '26

25 May '26

Hi, I'm looking to sell some of the equiepement from my homelab, and to be specifically: 1. Mellanox SN3700C, 32x100G switches. Model: MSN3700-CS2FC (P2C airflow), production date 2023-03-25 - they are with original package, I bought them few years ago and actually never turned them on. Technically they are openbox - outter box was opened by me, but the factory wrapping and seal on it is still intact. Asking price: 2500 CHF per switch, I have two of them. 2. ASUS W790E-SAGE SE Motherboard (LGA4677, Sapphire Rapids WS board, 6xPCIe Gen5 x16 + PCIe Gen5 x8 slots, 8 memory channels DDR5 RDIMM, etc.) + Xeon W5-3435X (Xeon WS 112L, 16 core, 3.1 GHz base, 4.7 Ghz max boost, overclockable, support XMP memory profiles) with the box and most of the accessories (for motherboard and I probably have a box for the CPU), with few extra VRM fans (Noctua 40x40x20mm). I've used that mb-cpu combo for t-rex load generator ("Generating 1 Tbps of traffic on a commodity hardware", Nog.fi 2025.06) Asking price: 1200 CHF 3. ASUS W790E-SAGE SE MB + Xeon W5-3435X, but this one without boxes and accessories and fans. Second combo from the same talk. Asking price: 1000 CHF In addition for any of the ASUS W790 mb combo, I can give for free slightly broken Artic Freezer 4U-M - one of the screws there fall off, probably can be inserted back with right tool. Optionally - I have somewhere chineese cooler for LGA 4677 (looks similar to Noctua NH-U12S DX4677, but has high RPM noname fans and called "coolserver m97") for extra 20 CHF. I might have some other LGA4677 coolers around. 4. ConnectX-5 MCX516A-CDAT (PCIe Gen4), in a box, with high profile bracket only (I think I don't have low profile, but I can look), flashed with latest available firmware from ~January 2026. Asking price: 200 CHF per card. I have two of those. Note: those were originally CCAT, but reflashed to CDAT. 5. Bluefield-2 MBF2M345A-VENOT (Crypto Disabled, E-Core, 16GB RAM, 1x200G - basically I used them in NIC-mode as ConnectX-6 Dx), 300 CHF each. I can sell at least 2 of them, probably more as I have spare cards that I don't use. 6. I can also sell (if needed) 8x16GB RDIMM DDR5-4800 for 2.5k CHF. I used those sticks in one of the t-rex machines during the tests as I needed some RAM but not much. All bigger stuff is self-pickup at 8864 Reichenburg until ~05.06.2026, after that I would move to 8545 Rickenbach ZH, small stuff I can bring to Zurich HB at one of the days when I am in Zurich. Price is negotiable with reason (e.x. if you want to get both switches and self-pick up before I move to a new place - I would gladly sell both of them for 4k total)

2 2

SwiNOG #41 Recap – Full House on the Gurten, Switzerland
by Steven Glogger 01 May '26

01 May '26

Hi all, SwiNOG #41, held on April 28, 2026, on Bern’s Gurten, once again demonstrated what makes the Swiss Network Operators Group special: strong technical content, an engaged community, and a format that simply works. This edition saw exceptionally high demand — for the first time, we had to introduce a waiting list. Out of 180 available seats, 169 participants joined on the day, reflecting a consistently strong show rate and the commitment of the community. Technical depth that matters The agenda covered a wide range of real-world challenges and forward-looking topics. From optical transport insights — such as analysing transceiver efficiency using VDM metrics — to practical approaches in network automation, observability, Agentic Network Operations: What AI Can (and Can’t) Do in and infrastructure resilience, the talks stayed close to what operators actually deal with day-to-day. What stood out again was the balance: no buzzword bingo, no vendor fluff — just technical talks, shared experiences, and things you can actually take back and apply. Talks * Rethinking Network Strategy & Building Resilience Through PNIs, Peering and Smart Geographical Expansion – Wouter Van Renterghem (RETN GmbH) * bgproutes.io: A Next-Gen BGP Data Collection Platform – Thomas Holterbach (University of Strasbourg) * Understanding and Optimising Transceiver Power Consumption Using Internal Metrics – Gerhard Stein (Flexoptix GmbH) * Shared Spectrum & MOFN – Liam Taylor (EXA Infrastructure) * 25 Years of SwissIX – A Quarter Century of Peering – Arist Volger (SwissIX) * SwissIX Update – Arist Volger (SwissIX) * Toward Agentic Network Operations: What AI Can (and Can’t) Do – Tobias Bühler (netfabric.ai) * An Introduction to ASPA – Validating AS-Paths with the help of RPKI - Massimiliano Stucchi (SwiNOG) * EVPN Unleashed: Scaling Multi-Domain Fabrics with EVPN Gateways – Remi Locherer (modus one / Arista) * SCION Inter-Domain Routing – Tilmann Zäschke (ETH Zürich) * The Network Automation Map: Navigate Your Journey with NAF – Damien Garros (OpsMill) * Building a Vendor-Agnostic E2E Testing Ecosystem with Netlab – Leandro Lerena & Andy Griesbeck (Zebbra AG) * Introduction to CHNUG – Severin Dellsperger (OST University) * Closing Remarks – Simon Ryf & Steven Glogger (SwiNOG) Resources are online As always, all presentations and videos are available online: 👉 https://www.swinog.ch/meetings/swinog41/ This ensures the content lives beyond the event and remains accessible to the broader community. Looking ahead SwiNOG continues to grow — not just in numbers, but in relevance. The increasing demand shows that there is still a strong need for a neutral, community-driven space focused on real technical exchange. A big thank you to all speakers, sponsors, and participants who made SwiNOG #41 possible. See you at the next one. SwiNOG #42 is in the planning for this autumn. -steven SwiNOG Core Team

1 0

Re: [Survey] When do you upgrade your network?
by Jacob Romain 27 Apr '26

27 Apr '26

Dear all, [My apologies if you receive multiple copies of this message] Thank you to all of you who already answered our survey on operators' main motives for network hardware upgrades. If you have not yet, it's not too late! Please help us get a more balanced worldview of the state of practices :-) => https://tally.so/r/rjEkZR Thanks a lot in advance for your help! -- Romain On 27/03/2026 11:01, Romain Jacob via wrote: Dear all, [My apologies if you receive multiple copies of this message] TL;DR I lead an academic research project to better understand the motives behind network hardware upgrades. If you are operating a network infrastructure and have 10 minutes to spare, we would greatly appreciate you filling out this short (anonymous) survey: https://tally.so/r/rjEkZR == Longer version == My name is Romain; I am a senior scientist at ETH Zürich, Switzerland, where I research the environmental impacts of Internet infrastructure and how we can steer networks to become more sustainable in the future. There is increasing evidence that a large part of the Internet's impact comes from the manufacturing, deployment, and recycling of hardware, suggesting that networks could substantially reduce their footprint by keeping network devices in operation for longer, despite possibly higher energy consumption in older hardware models. Some of my ongoing research aims to assess whether this hypothesis is correct; happy to tell you more about that if you are interested. Assuming it is indeed correct that network hardware should be kept in operation for longer, if we want to encourage this, we must understand why networks are being upgraded today. * What are the main motives behind network hardware upgrades nowadays? * What factors are preventing or discouraging longer hardware lifetime in networks? We prepared a short survey to help answer those questions. After some brief contextualization questions to clarify the network type and context, the core of the survey presents a list of possible motives for hardware upgrades and asks, for each, how important it typically is in your own network upgrades. The second half of the survey contains (optional) questions related to the current environmental sustainability practices in your organization. If you are operating a network or working for an organization that operates a public or private network infrastructure, we would greatly appreciate you filling out this short (anonymous) survey: https://tally.so/r/rjEkZR And, naturally, you are more than welcome to share this survey within your own network (of humans, I mean). Many thanks in advance! — Romain -- Romain JACOB Postdoctoral Researcher ETH Zurich Networked Systems Group (NSG) Lead: Prof. Laurent Vanbever www.romainjacob.net<https://www.romainjacob.net/> @RJacobPartner<https://twitter.com/RJacobPartner> @jacobr@discuss.systems<https://discuss.systems/@jacobr> Gloriastrasse 35, ETZ G84 8092 Zurich +41 7 68 16 88 22

1 0

Contact Request - Ramon Wyss
by Simon Ryf 24 Apr '26

24 Apr '26

Hi all and sorry for the spam. Does anyone have a working email for Ramon Wyss? Please send me the email off list, thx. br Simon

1 0

URI used by sbb.ch servicenew on SWIOG blacklist. Need help finding the URI
by Benoit Panizzon 02 Apr '26

02 Apr '26

Hi Team I got notified that email from service(a)sbb.ch sent from the US ServiceNow IP Address: 37.98.234.2 contain an URI blacklisted as 'spamtrap hit' in uribl.swinog.ch which causes most emails to get handled as spam (in our case rejected) Unfortunately I have not yet managed to get my hands on an email which contains this URI which is blacklisted. I opened a case with the SBB Customer service and they sent me such an email in an attempt to reproduce the issue: Received: from outbound09.service-now.com (outbound09.service-now.com [37.98.234.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by idefix.imp.ch (Postfix) with ESMTPS id 296EEC07A5 for <abuse(a)imp.ch>; Tue, 31 Mar 2026 17:14:35 +0200 (CEST) Unfortunately that email they sent me, contains no URI listed @uribl.swinog.ch sbb.ch and swisspass.ch are whitelisted, same for servicenow.com. What other URI could be contained in 'most' of the replies sent from service(a)sbb.ch? Any help appreciated! Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

1 1

Peak incident Response 5-6. May in Geneva
by Serge Droz 02 Apr '26

02 Apr '26

Dear Swinogers In May, Geneva Cyber Week takes place — in Geneva, of course! The Swiss CSIRTs are organizing a two-day Technical Colloquium, "Peak Incident Response," on 5–6 May: https://www.first.org/events/colloquia/geneva2026/ <https://www.first.org/events/colloquia/geneva2026/>. Attendance is free and a great program is lined up. This is a technical conference focused on large-scale infrastructure. What makes the event special is that we won't only have technical folks, but also many people from the policy space — those working for UN agencies, nonprofits, and similar organizations. Today, running and securing the internet is more than technical work. It's important that the non-technical world understands our concerns and challenges. At the same time, this is an event that brings together the technologists — the people who actually do the hard, unglamorous work. This event is organized by volunteers; we've worked to make it free, and what we need now are participants who make it worthwhile. Talks are cheap: good questions in the Q&A and good conversations during the breaks are what make this event worth attending. I hope to see many of you there. Feel free to reach back if you have questions or comments Best Serge

1 0

### SwiNOG #41 - Waiting List ###
by Simon Ryf 01 Apr '26

01 Apr '26

Sorry I wrote the wrong email: If you want to come, have no ticket and did not yet write to the Waiting List - please do so: “Waiting List” core(a)swinog.org (.org not .ch)

3 2

### SwiNOG #41 (28.04.2026) - Agenda ###
by Simon Ryf 01 Apr '26

01 Apr '26

Dear SwiNOG community The Agenda for SwiNOG #41 - Tuesday 28th of April 2026 is published. - https://www.swinog.ch/meetings/swinog41/ (Very tiny slimy monsters delayed that a bit unexpectedly) Registration We’re fully booked but working hard to make it possible that we can raise the available seats. If you want to come, have no ticket and did not yet write to the Waiting List - please do so: “Waiting List” core(a)swinog.ch Location See details under Location at https://swinog.ch/mettings/swinog41/ Gurtenbahn / Cablecar to Gurten Please note, there is a new way how Gurtenbahn (the Cablecar to the event location) is handling tickets. -> Do not buy a Gurten Ticket yet, we will send you a voucher code (Gurten Ticket is included in the SwiNOG Ticket). Agenda 08:15 Registration, Coffee & Gipfeli (60 min) 09:15 Welcome & Agenda (5 min) Morning Session 1 — Network Strategy & Optical Infrastructure 09:20 Wouter Van Renterghem | RETN GmbH — 25 min The Road to Tier-"Something". Rethinking Network Strategy & Building Resilience Through PNIs, Peering and Smart Geographical Expansion. 09:45 Thomas Holterbach | University of Strasbourg — 20 min bgproutes.io: A next-gen BGP data collection platform 10:05 Gerhard Stein | Flexoptix GmbH — 25 min Understanding and optimising transceiver power consumption using internal metrics 10:30 Liam Taylor | EXA Infrastructure — 15 min Shared Spectrum & MOFN 10:45 Morning Break (45 min) Morning Session 2 — Swiss Internet Heritage 11:30 Arist Volger | SwissIX — 20 min 25 Years of SwissIX – A Quarter Century of Peering in Switzerland 11:50 Arist Volger | SwissIX — 5 min SwissIX Update 11:55 Lunch Break (90 min) Afternoon Session 1 — AI & Network Architecture 13:25 Tobias Bühler | netfabric.ai — 25 min Toward Agentic Network Operations: What AI Can (and Can't) Do 13:50 Jolly Trivedi | University of Turku — 25 min Ethics and Oversight in AI-Driven Cybersecurity 14:15 Remi Locherer | modus one ag with Arista Networks — 25 min EVPN Unleashed: Scaling Multi-Domain Fabrics with EVPN Gateways 14:40 Tilmann Zäschke | ETH Zürich — 20 min SCION Inter-Domain Routing 15:00 Afternoon Break (45 min) Afternoon Session 2 — Automation & Community 15:45 Damien Garros | OpsMill — 25 min The Network Automation Map: Navigate Your Journey with the NAF Automation Framework 16:10 Leandro Lerena | Zebbra AG — 15 min Building a Vendor-Agnostic E2E Testing Ecosystem with Netlab 16:25 TBD | Megaport — 15 min TBA 16:40 Andrew Vieyra | CommunityRack.org — 10 min CommunityRack.org - New Projects and Focus! 16:50 Severin Dellsperger | OST University — 10 min CHNUG 17:00 Social Event Already a big “Thank You” to our Sponsors [cid:1BCA7A73-E2FD-4A15-91FD-5E4E8CB7BC9B] [cid:D7ACD2E5-4528-4FCA-A021-466EE248E61C] and suporters [cid:649CB8B5-B9A1-4705-BC2D-CE2752C9CB6E] [cid:AAA9D4C8-E043-43EC-B83D-3382F86A24C2] [cid:03196310-AC0C-4792-83A1-1DF4BEC6BC16] [cid:68B00502-E516-438C-A38E-79DDE60A116D]

1 0

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

swinog