December 2025 - NANOG - lists.nanog.org

Arista 7280QR-C36 Viability
by Mike Hammett 04 Dec '25

04 Dec '25

At the risk of the Streisand effect, what am I missing about the Arista 7280QR-C36? It looks like a great router for small ISPs (great price, large packet buffers, good port selection, meaningful hardware routes). That said, it looks to be right on the border of DFZ viability. It supports "over 1M" routes, but I currently have about 1,036,824 in my route table. How much over is "over"? What happens in EOS when it goes over? What's the "next best" box for that role? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com

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Cox AS22773 uPRF issue - please contact off list
by Evan S. Weiner 04 Dec '25

04 Dec '25

If there's anyone on here with Cox engineering that can assist with a uPRF strict issue (we're multihomed), please contact me offlist. Thanks, Evan [cid:ca13917c-8f83-46c4-80da-06b0c0d7e178] Evan S. Weiner Managing Member , Hosted Backbone, LLC d: (804) 549-4899<tel:(804)%20549-4899> | m: (804) 677-9544<tel:(804)%20677-9544> e: eweiner(a)hostedbackbone.net<mailto:eweiner@hostedbackbone.net> | w: www.hostedbackbone.net<https://www.hostedbackbone.net/>

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Whatever happened to ONOS?
by Mark Prosser 04 Dec '25

04 Dec '25

I remember quite a long time ago being convinced that ONOS & other SDN projects would change the industry. All the podcasts were suggesting they would as well... Today, in the context of what was promised, they seemingly Still Do Nothing One project I thought was especially interesting was ONOS.... it seemed to really suggest it would transform Telcos in the Whitebox craze timeline. As Openflow and such fell off, I remember ONOS pivoting to SR-TE & PCE... but I haven't heard about it in quite a while. Is anyone using this in production? The websites seem to still exist. https://wiki.onosproject.org/ https://opennetworking.org/onos/ Just curious. Warm regards, -- Mark Prosser // E: mark(a)zealnetworks.ca // W: https://zealnetworks.ca

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OVH (AS16276) peering contact
by Kelly Littlepage 04 Dec '25

04 Dec '25

I'd be grateful if anyone from OVH (AS16276) or someone with a contact at OVH peering could ping me off-list. I can't get a response from the peering-16276(a)ovh.net distro. Cheers, Kelly -- Kelly Littlepage OneChronos Global kelly(a)onechronos.com https://www.onechronos.com -- This email and any attachments thereto may contain private, confidential, and privileged material for the sole use of the intended recipient. If you are not the intended recipient or otherwise believe that you have received this message in error, please notify the sender immediately and delete the original. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If this message was misdirected, OCX Group Inc. does not waive any confidentiality or privilege.

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The NANOG 96 CFP is open through 05-January-2026
by NANOG Program 03 Dec '25

03 Dec '25

NANOG Community at large, The NANOG Program Committee (PC) would like to remind you that we are accepting proposals through Monday, 05 January 2026, for in-person or live remote presentations at all sessions of NANOG 96 taking place in San Francisco, CA on 02-04 February 2026. Our spotlight topic for NANOG 96 is “AI and network infrastructure”, but we accept presentations on all relevant topics. The work you do and the ideas you have are interesting and important, and we’d love to hear more about it! Perhaps you’re having trouble figuring out what the NANOG audience would like to see. During every NANOG Conference, we ask everyone to answer the surveys and tell us what they want to hear about at a future conference. Some of the most recent answers are below. If you have a presentation on any of these general or specific topic areas, your community would love to hear from you! AI / Automation Topics - AI vs “traditional” datacenter networks - Automation approaches - Designing networks for AI traffic - Details on how to define and build AI agents - Network automation technologies - Early-career Professional Development topics - Basic hands-on tutorial track - More career development topics - Emerging technologies topics - More on net infra evolution and the drivers around it - New protocols, technologies, IETF work, etc. - Enterprise Networking Topics - Enterprises interacting with ISPs and the Internet - Overlays - Performance - Open source/freely available tools to move data quickly and efficiently - More information about how to measure and improve network performance from hosts. - Routing / BGP Topics - BGP Route Maps - Integrating IPv6 - Interplanetary networking - More on BGP in data centers like the "lightweight traffic engineering" talk - RPKI, Routing - Peering - Residential Broadband - Segment routing - Researcher / Student Topics - Opportunity for students to network - Researcher / operator BoF / forum - Security Topics - AI-driven botnets and residential proxies - DDoS mitigation topics - Security and IOT - Soft skills - Attracting software developers to network development/engineering - Career development - Computing and internet history - Intro to NANOG mailing list and other operational communities - Risk-based financial decision making - Transitioning from technical roles to management - Troubleshooting and best practices - Layer 2 ethernet best practices - Network architecture or on-prem troubleshooting - Provisioning, troubleshooting - Workshops and How-Tos - More in-depth how-tos / more in-depth seminars - Physical hands on labs - Other - Edge computing - Hardware topics such as ASIC or specific software oriented network engineering - How to start an ISP from scratch - More cloud network specific topics - Starlink - - Submit your presentation proposal and abstract via the Program Committee Tool at: https://www.nanog.org/meetings/submit-presentation/ - Sign in with your Profile Account - Select the type of talk you propose to present, and complete the form Timeline for submission and proposal review: NANOG 96 Calendar of Events Date Event/Deadline December 15, 2025 Topics List Published January 05, 2026 DRAFT Presentation Slides Due January 12, 2026 Meeting Agenda Published January 26, 2026 FINAL Slides Due February 01, 2026 On-Site Lightning Talk Submissions Open If you have any questions, please email the PC (nanogpc(a)nanog.org) and a representative will respond to you in a timely manner. Otherwise, submit your talk, tutorial, track, or panel proposal to the Program Committee Tool at your earliest convenience. We look forward to reviewing your submission! Sincerely, Adair Thaxton Program Committee Chair Sent on behalf of the NANOG PC

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Fwd: ECN
by Tim Durack 03 Dec '25

03 Dec '25

In case it is useful for anyone else, underlying issue looks to be this: Cisco CSCws27022: ECN bits being included as part of ECMP hash on IPv6 TCP flows (Workaround: Do not use ECMP) Appears to be platform specific, affecting Cisco Catalyst C9K UADP ASIC (C9500-32C) Another work-around might be to configure "ip cef load-sharing algorithm original" Tim:> On Tue, Mar 25, 2025 at 4:33 PM Tim Durack <tdurack(a)gmail.com> wrote: > Very helpful, thanks! Will post my own short story once complete... > > On Tue, Mar 25, 2025 at 4:24 PM Toke Høiland-Jørgensen <toke(a)toke.dk> > wrote: > >> Tim Durack <tdurack(a)gmail.com> writes: >> >> > Toke, >> > >> > Resurrecting an old thread, did you ever write this one up? >> >> Hi Tim >> >> Thank you for the reminder! No, I never did get around to writing >> anything at the time. However, now that you reminded me, I collected my >> old notes and posted this: >> >> >> https://blog.tohojo.dk/2025/03/ecn-ecmp-and-anycast-a-cocktail-of-broken-co… >> >> > I believe I have a customer reporting a similar problem with IPv6 TCP >> ECN >> > probably ECMP resulting in RST coming back from anycast services >> > (Cloudflare). >> > >> > Tricky one to debug, looking for similar reports... >> >> Hoping the above is helpful :) >> >> -Toke >> > > > -- > Tim:> > -- Tim:> -- Tim:>

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AS58182 Wix.com Contact
by Ross Lindsay 01 Dec '25

01 Dec '25

Good Morning! If anyone from AS58182 Wix.com is here, could you please contact me off-list? Looking for some assistance troubleshooting reachability of the service from our network for a mutual customer, and didn't get too far with Tier 1. Regards, Ross Lindsay AS14031

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