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A first look at the effects of the Ebone shutdown

This article discusses the impact of the Ebone network shutdown, including network disruptions, re-routing, and slower connections. The author presents data from test traffic measurements and highlights the need for backup paths and improved network stability.

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A first look at the effects of the Ebone shutdown

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  1. A first look at the effects of the Ebone shutdown Henk Uijterwaal and René Wilhelm RIPE NCC 4 January 2020

  2. KPNQwest • Build a network of fibers in Europe • Including take-overs and mergers • Ebone network • Typical dot com • Huge debts • Few paying customers • Creative bookkeeping • Filed for bankruptcy on May 31 • Former Ebone network to be shut down first • July 2, in the morning • Next major shutdown planned for July 19

  3. RIPE NCC Test-Traffic Measurements • RIPE NCC Service to measure one-way delays and losses • Measurement stations all over the world • Full mesh • Some 2,000 paths that might include the Ebone network

  4. TTM data • Network alarms • Monitors incoming delays • 2 averages: Long (30 days) and short (15 minutes) • Warns operator (and us) if recent delays are outside the expected range • Delay and Loss plots

  5. Delay and Loss plots, format

  6. Delay and Loss plots, format • Delay • Top left • X-axis: Time of day (July 02 0:00 – July 03 0:00, GMT) • Y-axis and black dots: Delay in ms for individual packets • Red dots: #hops times 10 • Delay distribution • Top right • Loss • Bottom right • X-axis: Time of day • Y-axis: % of packets that arrived over 15 minutes = 100%-loss

  7. Number of alarms per day

  8. Number of alarms per hour

  9. Individual connections • “Is the Internet still working?” • Expect: • No connection • Rerouting • Other effects • Went through all plots for that day

  10. No connection

  11. No connection (2)

  12. No connection (3)

  13. Major re-routing

  14. Major re-routingMunich-New York

  15. Major re-routingMunich – San Jose – New York

  16. Shutdown of the wrong line

  17. The network is getting slower

  18. The network is getting slower (2)

  19. Overloading of old equipment

  20. Overloading of old equipment

  21. Is everybody unhappy then?No, better backup path

  22. Summary • “The Internet is still working!” • Not as good as before though • Connection lost on 1 path out of 2116 • Lots of re-routing • Unstable routes for 30 to 150 minutes • Sub-optimal paths afterwards • Lots of connections became slower • Business opportunity for 400 M€ • More fun expected this Friday

  23. Questions, Discussion

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