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2949 discussions

Business Continuity - eine kleine Geschichte...
by Matthias Leisi 03 Oct '25

03 Oct '25

Hallo allerseits, Ich möchte euch eine kleine Geschichte erzählen. Heute Nacht (vom 2. auf den 3. Oktobber 2025) gab es einen Brandalarm im „Tanklager und Unterflurbetankungsanlage Rümlang“, TAR/UBAG. Die Werksirene war im weiten Umfeld des Flughafens gut zu hören, aber offenbar ist nichts „grosses“ in Flammen aufgegangen (sonst wären die Zeitungen voll davon :) ) Aber: In gut einem Kilometer über freies Feld vom Tanklager entfernt ist das NTT Datacenter (früher eShelter), und etwa 700 Meter entfernt das Digital Realty Datacenter (früher Interxion). Zudem führt eine Gasleitung in der Nähe durch (ich gehe davon aus: mit Datenleitungen), und in der Strasse und dem Bahngleis links und rechts des Tanklagers wohl noch weitere Datenleitungen (zumindest zur Verbindung NTT - Digital Realty). Wenn im Tanklager tatsächlich ein grösserer Brand ausbricht, muss in den DCs wahrscheinlich die Frischluftzufuhr reduziert werden, damit eindringender Rauch keine grösseren Schäden verursacht - mit entsprechenden Auswirkungen auf die Kühlung. Im Worst Case müsste an beiden Standorten wegen der reduzierten Kühlung eine Menge an Infrastruktur heruntergefahren werden - und an beiden Standorten werden bekanntlich viele essenzielle Dienste betrieben. So als Denkaufgabe fürs Wochenende: Wie gut könntet ihr mit dieser Situation umgehen? Welche Zulieferer / Dienstleister sind auf eines oder beide DCs angewiesen? Wo wäre „nur“ die Redundanz gefährdet, und wo der ganze Dienst? Und wie zuverlässig sind Redundanz und Failover getestet? Viele Grüsse, Matthias

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IPv4 /24 PI space for sale
by Matias Meier 02 Oct '25

02 Oct '25

Hello together If anyone is interested in an IPv4 /24 PI space, please let me know and sent me a mail with an offer. Best regards Matias Meier

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DENOG17 Invite
by Stefan Funke 01 Oct '25

01 Oct '25

Good afternoon SWINOG! The annual DENOG conference is scheduled to take place in November this year. There are some changes, especially interesting for our neighbors from other NOGs: DENOG17 will occur in the city of Essen. This is your annual reminder: If you want to attend, be sure to purchase your tickets now before they sell out. The nearest airports are: - Duesseldorf (DUS / EDDL) - Koeln/Bonn (CGN / EDDK) - Dortmund (DTM / EDLW) The nearest train station is: - Essen Hauptbahnhof (Main Station) Our venue is directly at the train station: Haus der Technik (HDT), Hollestrasse 1, 45127 Essen, Germany https://www.denog.de/de/meetings/denog17/venue.html DENOG17 starts with workshops and our traditional pre-social on November 9th. If you plan to attend any of the workshops, please remember to register as soon as you have received your ticket. In addition to IPv6, BGP, and best practices workshops, this year we will also offer another leadership track. https://www.denog.de/de/meetings/denog17/workshop_registration.html The conference will open with presentations on Monday, November 10th. If you can't make it on Sunday for the workshops, we've got you covered. This year, we will have two tracks in 2 different rooms. The program committee compiled a packed agenda with a huge variety of talks. All talks will be in English. Take a sneak peek at our Agenda: https://pretalx.com/denog17/schedule/ Cheers, Stefan & the DENOG event team

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Init7 - 20.48 dBm input
by philippe.huber＠mailpass.ch 13 Sep '25

13 Sep '25

Hi List Is someone from Init7 arround? We have some very high input noise, maybe the patch connection in the POP is faulty. Ticket ID 42324217 It would be great if someone can have a look. Thanks and greetings from Pratteln Philippe

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Looking for a small 19" rack. May easily be used.
by Mueller Urs SBB CFF FFS 10 Sep '25

10 Sep '25

Hi guys I am looking for a small 19" rack, if possible with side panels/doors to reduce noise. Quarter height or half height. If on casters, it would be a surplus. Something like this would be nice: https://www.bechtle.com/ch/shop/lehmann-office-rack-akustik-12u-600x900--32… May absolutely be used. It’s for a lab environment. Kind regards, Urs SBB AG Konzernsicherheit Bollwerk 10, 3000 Bern 65 urs.bf.mueller(a)sbb.ch<mailto:urs.bf.mueller@sbb.ch> / www.sbb.ch<http://www.sbb.ch/>

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Swisscom Mail Admin
by Adrian Kägi 18 Aug '25

18 Aug '25

Hi List Is there a Mail admin from Swisscom arround the corner? We have issues to deliver Mail to a Swisscom hosted MX Response from destination MTA: refused to talk to me: 421 4.7.1 Delivery not authorized Please contact me OL Best regards Adrian

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Improving our MANRS: AS-SWITCH -> AS559:AS-SWITCH
by Simon Leinen 15 Aug '25

15 Aug '25

Dear SwiNOGgers, and in particular those who peer with us (Switch), we have finally gotten around to implementing the recommendation[1] to use "hierarchical" names for our as-set in the RIPE RR/DB. So instead of "AS-SWITCH", we now use "AS559:AS-SWITCH". Please update your filter generation accordingly if you peer with us. Our PeeringDB entry[2] and AS559 policy in the RIPE DB have been updated accordingly. Thank you & best regards, -- Simon. Simon Leinen, Network Switch EPFL Innovation Park, Bâtiment I, 1015 Lausanne, Switzerland phone: NOC +41 44 268 1530, direct +41 44 268 1536, mobile +41 78 638 7061 https://switch.ch [1] https://manrs.org/2022/12/why-network-operators-should-use-hierarchical-as-… [2] https://www.peeringdb.com/asn/559

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Looking for Swisscom endusers...
by Matthias Hertzog 04 Aug '25

04 Aug '25

Hi there! As some of you know, i’m (again) the owner of the mhs.ch <http://mhs.ch/> domain - yeee! :-) This domain was used for endusers in the @free.mhs.ch subdomain in the past. Some of these clients still have a …(a)free.mhs.ch address connected with their Swisscom account, even after the addresses were cancelled (what a shame!) by the then-owner of mhs.ch <http://mhs.ch/> years ago. I try to find these customers to help them, getting a mail-forward or simply a chance to change their Swisscom accounts to the new address. Can someone at Swisscom please get in touch with me? I don’t want the phone numbers of these customers, but i suggest that someone at Swisscom gives them a call to help solving the problem. Thanks, Matthias BTW: The Swisscom shop i’ve visited tried to help, but has no access to the database when only the e-mail address is know. M.H.

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Sunrise contact: IPv4 Address Allocation vs Routing Issue
by Lüthi Marc 28 Jul '25

28 Jul '25

Dear all Could someone from Sunrise please contact me off-list? I’m having a hard time getting across support that there _is_ in fact an issue involving both IP allocation (PPP based) on a broadband service and IP Prefixes owned and routed by Sunrise. Thanks a lot Marc Lüthi EveryWare AG

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SwiNOG #40 - Videos published
by Simon Ryf 03 Jul '25

03 Jul '25

Dear NOG Community, We’ve held SwiNOG #40 last week! For those of you who could not participate or if you want to rewatch a Presentation we have uploaded the Videos. You can find the full agenda and the links to the Videos here: https://www.swinog.ch/meetings/swinog40/ Or directly on YouTube: https://www.youtube.com/playlist?list=PLMP2Spqss4IrA-SkYQPEo1AND60Mgse4T We also want to extend a big thank you to our Gold Sponsors: * A10 Networks * Exa Infrastructure And our Supporters: * SwissIX * aws * Megaport We look forward to seeing you at SwiNOG #41 24th of April 2026. Best regards, Max, Roman, Sandra, Simon & Steven SwiNOG Core Team

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