- Routing-wg - lists.nordu.net

In Person Routing Working Group Meeting at APAN62
by Brenna Meade 09 Jul '26

09 Jul '26

Hi Routing Working Group! Our next meeting will be in August at APAN62, Auckland, New Zealand Monday August 10, 2026 Time: 13:30 - 15:00 Venue: Coromandel - Level 1, The Grand Millennium Hotel If you are unable to attend, options for virtual participation at APAN62 can be found here https://apan62.apan.net/registration/ We are finalizing the agenda, but there is still room for speakers or topics of discussion. Please contact Warrick or Brenna if you are interested. Let us know if you have any questions! Brenna Meade International Engineering Program Manager Internet2 bmeade(a)internet2.edu<mailto:meadeb@internet2.edu>

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Re: RWG May Meeting
by Brenna Meade 18 May '26

18 May '26

Agenda for May Meeting * Welcome * Agenda Bash * International Routing Round Table * Call for topics of interest * AOB Upcoming Events at TNC: GNA-G Network Automation Working Group The GNA-G Network Automation Working group is established to collaborate on the transformation of NREN networks through network automation and orchestration. Join this meeting to learn, discuss, and share information about network automation, network orchestration and related topics. Date and Time: 8 June 2026, 14:00-17:30 Location: Finlandia Hall: Hall A BOF: “Coordinating BGP Policy and Tooling Across the Global R&E Infrastructure” During TNC26, Steve Wallace and Brenna Meade will hold the BoF “Coordinating BGP Policy and Tooling Across the Global R&E Infrastructure” on Thursday, 9:00–10:30 a.m. We will demonstrate progress on the ROOTBEER tools, invite input on future features, and discuss how data from other R&E networks could be incorporated to improve coverage and utility for the broader community. Date & Time: 11 June 2026, 09:00-10:30am Location: Dance Room GNA-G Side Meeting We are delighted to invite you to the Global Network Advancement Group (GNA-G) Community Meeting, taking place as a side meeting at TNC26 in Helsinki, Finland. Date & Time: 12 June 2026, 09:00–12:30 Location: Finlandia Hall, Hall A The Global Network Advancement Group brings together network professionals from Research & Education (R&E) Networking organizations worldwide to support and enhance continent-to-continent interconnectivity and global science collaboration. Building on the success of previous gatherings, this meeting at TNC26 will serve as a platform for knowledge sharing and open discussion around GNA-G working groups and topics of relevance to the global R&E networking community. We look forward to productive exchanges and continued collaboration. The meeting will feature a panel session with an outstanding line-up of voices from across the global R&E networking community: * James Deaton – Internet2 * Lisandro Zambenedetti Granville – RNP * Inder Monga – ESnet * Valter Nordh – NORDUnet * Bram Peeters – GÉANT * Alexander Van Den Hill – SURF More about TNC26: https://tnc26.geant.org/ To attend the GNA meetings, you must register for a Side Meeting Pass: https://tnc26.geant.org/register-to-tnc26/ Please note that a Side Meeting Pass is required even if you are not attending the main TNC26 conference programme. Brenna Meade Internet2 bmeade(a)internet2.edu<mailto:meadeb@internet2.edu> ________________________________ From: Brenna Meade Sent: Tuesday, April 28, 2026 9:13 AM To: routing-wg(a)lists.gna-g.net <routing-wg(a)lists.gna-g.net> Cc: Dónal Cunningham <donal.cunningham(a)asiera.ie>; Sadi Kocak <sadi.kocak(a)surf.nl>; Spurling, Shannon <shannon(a)more.net>; Annalicia Duran <annadura(a)internet2.edu>; Dale Carder <dwcarder(a)es.net>; Fligor, Debbie <fligor(a)illinois.edu>; Schallehn, Steve [ITS] <sjs(a)iastate.edu>; Corey Eichelberger <corey.eichelberger(a)gmail.com>; Bauer, Steven J. <Steven.Bauer(a)sdsmt.edu>; Rick Havern <richard.havern(a)geant.org>; Tim Chown <Tim.Chown(a)jisc.ac.uk>; James Deaton <jdeaton(a)internet2.edu>; Brown, Eric <brownej(a)vt.edu>; Lee Bu Sung, Francis (Assoc Prof) <EBSLEE(a)ntu.edu.sg>; Warrick Mitchell <Warrick.Mitchell(a)aarnet.edu.au>; Patch Lee <patch.lee(a)teincc.org>; KW Pong (ITSC) <kwpong(a)cuhk.edu.hk>; Carsten Pettersson <carsten(a)nordu.net>; Jeff Bartig <jbartig(a)internet2.edu>; Søren Peter Skou <sps(a)nordu.net>; Turczan, Mark <mturczan(a)nyp.org> Subject: RWG May Meeting When: Tuesday, May 19, 2026 6:00 AM-7:00 AM. Where: https://internet2.zoom.us/j/83914445990?from=addon Brenna Meade is inviting you to a scheduled Zoom meeting. Join Zoom Meeting https://internet2.zoom.us/j/83914445990?from=addon Meeting agenda https://docs.zoom.us/agenda/doc/dceae8ef-1209-4d53-b57e-544495aac915?from=a… Meeting ID: 839 1444 5990 --- One tap mobile +17193594580,,83914445990# US +12532050468,,83914445990# US --- Join by SIP • 83914445990(a)zoomcrc.com Join instructions https://internet2.zoom.us/meetings/83914445990/invitations?signature=9UEkan…

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RWG May Meeting
by Brenna Meade 28 Apr '26

28 Apr '26

Brenna Meade is inviting you to a scheduled Zoom meeting. Join Zoom Meeting https://internet2.zoom.us/j/83914445990?from=addon Meeting agenda https://docs.zoom.us/agenda/doc/dceae8ef-1209-4d53-b57e-544495aac915?from=a… Meeting ID: 839 1444 5990 --- One tap mobile +17193594580,,83914445990# US +12532050468,,83914445990# US --- Join by SIP • 83914445990(a)zoomcrc.com Join instructions https://internet2.zoom.us/meetings/83914445990/invitations?signature=9UEkan…

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RWG March Meeting
by Brenna Meade 28 Apr '26

28 Apr '26

Brenna Meade is inviting you to a scheduled Zoom meeting. Join Zoom Meeting https://internet2.zoom.us/j/83914445990?from=addon Meeting agenda https://docs.zoom.us/agenda/doc/dceae8ef-1209-4d53-b57e-544495aac915?from=a… Meeting ID: 839 1444 5990 --- One tap mobile +17193594580,,83914445990# US +12532050468,,83914445990# US --- Join by SIP • 83914445990(a)zoomcrc.com Join instructions https://internet2.zoom.us/meetings/83914445990/invitations?signature=9UEkan…

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Permissions issue on ASPA recording.
by Addleman, Hans C 22 Apr '26

22 Apr '26

Apologies for the permissions issue. That should be fixed now: https://iu.zoom.us/rec/share/wsbxOIdaUJOdCYkIJ_mtNvAFv6CeyGtrLAHzcIlkb9o1pu… Passcode: 0f4y!fY&

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ASPA Slides and Recording from April Meeting
by Addleman, Hans C 22 Apr '26

22 Apr '26

Greetings Routing Working Group, Please find the slides attached from Dales great overview of ASPA. You can watch the recording of the presentation here: https://iu.zoom.us/rec/share/4slQPVxfjxAGQupCbSxP7m23LZBMLzwzvudc42wWaAmkUr… Passcode: 0f4y!fY& Please let Warrick, Brenna, and me know if there are any other routing related topics you would like to discuss or learn about in the coming year! Thanks again, Hans

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Routing Working Group April Meeting
by Addleman, Hans C 21 Apr '26

21 Apr '26

Greetings Routing Working Group, We have our April meeting coming up in just over 11 hours at 8pm US eastern time. Dale Carder of ESnet will be presenting on the Autonomous System Provider Authorization (ASPA). (https://www.ripe.net/manage-ips-and-asns/resource-management/rpki/aspa/) Look forward to speaking to you all tonight, Hans

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Routing Working Group April Meeting (US PM)
by Addleman, Hans C 24 Mar '26

24 Mar '26

Greetings Routing Working Group members, Our next meeting will be April 21st at 8pm US eastern time. Zoom Room: https://iu.zoom.us/my/addlema Dale Carder from ESnet will present on Autonomous System Provider Authorization (ASPA) and we will have time for discussion afterwards. Thanks to our presenter and we look forward to seeing everyone in April!

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Routing Working Group April Meeting (US PM)
by Addleman, Hans C 24 Mar '26

24 Mar '26

Greetings Routing Working Group members, Our next meeting will be April 21st at 8pm US eastern time. Zoom Room: https://iu.zoom.us/my/addlema Dale Carder from ESnet will present on Autonomous System Provider Authorization (ASPA) and we will have time for discussion afterwards. Thanks to our presenter and we look forward to seeing everyone in April!

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R&E Global Local Pref Probe Report, measuing routing policy for the global R&E network
by Steven Wallace 18 Mar '26

18 Mar '26

**[This is in development. Suggestions or corrections are welcome!]** # R&E Global LPP Report The attached HTML file is a self-contained, interactive copy of the report. Open it in any modern web browser to explore the full tree with search, sort, and expand/collapse controls. ## What this report shows The global R&E network consists of roughly 2,700 separate networks (autonomous systems). A significant percentage of these networks have connections to both an upstream R&E provider and one or more commodity ISPs. Each network independently decides which path to prefer when routing traffic to various destinations. Campuses typically connect to a regional R&E network (e.g., MERIT, LEARN, CENIC, NYSERNet), which in turn connects to Internet2. The R&E route between two campuses is often at least 4 AS hops. If both campuses use the same commodity ISP — which happens frequently — the commodity route might only be 2 hops. Without an explicit routing policy, BGP selects the shortest AS path, and the two campuses will route via the commodity ISP instead of the R&E network. The recommended best practice is to use **BGP Local Preference** to prefer routes learned from R&E networks over routes learned from commodity ISPs. When this is done, campuses route via the R&E path regardless of AS-path length. This report visualizes routing preference data for all 2,700 R&E networks, organized as an AS-path tree rooted at Internet2 (AS 11537). ## How the probe works The Local Preference Probe (LPP) is a server connected to both the Internet2 R&E network and a commodity ISP. It sends probes from two source addresses to hosts across the R&E networks and observes how each network routes its response back — does it arrive via the R&E path or the commodity path? | Source | Address | Route design | |--------|---------|-------------| | Source A | `163.253.64.1` | R&E route is prepended towards commodity | | Source B | `163.253.63.63` | R&E route is prepended towards R&E | Both sources share the same commodity route. The difference is which direction the R&E route is prepended, so the two probes test whether the remote network chooses based on Local Preference or AS-path length. ## Reading the results Each network in the tree has a stacked bar showing three categories: | Color | Source A return | Source B return | Meaning | |-------|----------------|-----------------|---------| | **Green (RE)** | R&E | R&E | The network follows the best practice of preferring R&E routes over commodity. BGP Local Preference favors R&E. | | **Orange (Path)** | R&E | Commodity | The network uses AS-path length to choose, so some destinations use R&E while others route via commodity. R&E and commodity have equal Local Preference. | | **Red (Comm)** | Commodity | Commodity | The network appears to always prefer commodity, even when an R&E route exists. | Probes that are inconclusive (missing or unexpected return pattern) are excluded from the percentages. **Orange and red networks are connected to the global R&E network infrastructure, but are not effectively using it.** ## Customer cone percentages The stacked bar for each AS represents its **customer cone** — the AS itself plus every AS downstream of it in the R&E tree: - Each probed destination IP is classified as RE, Comm, or Path. - Counts are summed across the entire cone: the AS's own prefixes plus all downstream prefixes. - The three bar segments show each category's share of the cone total, summing to 100%. A leaf AS shows only its own results. A transit AS near the root aggregates results across hundreds of downstream networks. ## Navigating the report - **Expand/Collapse:** Click any AS row to expand or collapse its children. Use the "Expand all" and "Collapse all" buttons for bulk control. - **Search:** Type an AS number or name in the search box to highlight matches and auto-expand their location in the tree. - **Sort:** Click the RE, Comm, Path, or Pfx column headers to sort children within each expanded subtree. Click again to reverse direction, a third time to reset. - **Prefixes:** Click the "N pfx" link on any AS to see its originated prefixes. Each prefix links to the per-prefix probe tool. - **Duplicates:** An AS that appears under multiple parents is fully rendered only once. Subsequent appearances show a "see above" link that scrolls to the first occurrence. - **AS names:** Toggle between names and holder names using the "Show AS holder" button. ## Data sources | Source | Used for | |--------|----------| | [RouteViews](https://www.routeviews.org/) | BGP AS paths and prefix origin data for R&E prefixes | | [RIPE Stat](https://stat.ripe.net/) | AS names and holder information | | [CAIDA AS Organizations](https://www.caida.org/catalog/datasets/as-organizations/) | Fallback AS name data | | lpp-store | Historical LPP probe results used to compute cone percentages | In the future, the report will be rebuilt daily at UTC midnight. ## Project This report is part of the [CICI-ROOTBEER](https://www.caida.org/funding/cici-rootbeer/) project. Steven Wallace Director - Routing Integrity Internet2 ssw(a)internet2.edu

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