Internet traffic after IP-convergence:

Transcription

1 Internet traffic after IP-convergence: What drives low-latencies in Internet traffic? Doug Madory, Senior Analyst Submarine Networks World, Singapore 12 September 2013

2 What drives low-latencies in Internet traffic? Recent Cable Events in Measurement Data Activation events can have profound impact on nations Why Submarine Cables are only part of the story Subsea cables provide the options However actual paths matter! 2

3 Global Measurement Infrastructure More than 100 locations, billions of measurements per day 3

4 What drives low-latencies in Internet traffic? Recent Cable Events in Measurement Data Cuba Tonga Sierra Leone EPEG 2009 Renesys Corporation What drives low-latencies in Internet traffic? 4

5 Cuba updates 1. ALBA-1 to Venezuela activated on 14 Jan 2. ALBA-1 to Jamaica activated on 13 May Disappeared 2 Aug

6 Cuba updates (2) 25 Jun: Tata service to Cuba changed from satellite to submarine cable (ALBA-1) Asymmetric satellite Submarine cable Submarine cable Submarine cable Asymmetric satellite Submarine cable Telefonica Disruption 6

7 Tonga cable activation $34 million project supported by World Bank Group Asia Development Bank Tonga Communications Corporation Satellite Perth Sydney Submarine Cable Cable first use at 5:56 UTC on 5 Aug

8 Sierra Leone ACE cable activation World Bank Project US$31M, China US$15M Activation ceremony on 20 Feb 2013 SierraTel on cable Afcom on cable 13:00 UTC 21 Feb :06 UTC 20 Feb 2013 Submarine cable Satellite Satellite Asymmetric satellite 8

9 Submarine Cable Alternative Terrestrial Path from Europe to Asia: EPEG Began carrying Internet traffic on 30 March Avoids submarine cable chokepoint in Egypt Began servicing customers in: Oman Iran Pakistan Kenya Bahrain Later added Kuwait Yemen 9

10 Submarine Cable Alternative Terrestrial Path from Europe to Asia: EPEG Primary customers are Transworld (Pakistan) and DCI (Iran) Some service disruptions visible 10

11 Submarine Cable Alternative Terrestrial Path from Europe to Asia: EPEG Primary customers are Transworld (Pakistan) and DCI (Iran) Some service disruptions visible 2013 Renesys Corporation What drives low-latencies in Internet traffic? 11

12 What drives low-latencies in Internet traffic? Why submarine cables are only part of the story Myanmar disruptions Hair-pinning examples 12

13 Myanmar Disruptions Initially reported as a subsea cable fault Multiple disruptions leading up to 25 th anniversary of 8888 Protest Afterwards, Telekom Malaysia becomes top international provider to Myanmar 13

14 Two views from Singapore to Myanmar Period of Internet disruptions begins 22 Jul (red arrow) From one Singapore-based ISP, latencies spike (typical view) From another Singapore-based ISP, latencies drop during disruption via fast path over NTT Lower latencies Lower latencies Higher latencies Higher latencies 14

15 Hairpinning Example #1 Geographic locality Internet locality Internet traffic can take some surprising paths Hanoi -> Singapore via Hong Kong, Tokyo, Seattle, Tokyo (again) 15

16 Hairpinning Example #2 Geographic locality Internet locality Internet traffic can take some surprising paths Kuala Lumpur-> Singapore via Dallas, Texas Extreme.Broadband Kuala.Lumpur ms <0<1.a901.as38182.net Extreme.Broadband Kajang ms if<1<2.bb1.kt1<kualalumpur.as6453.net Tata.Comm. Kuala.Lumpur ms if<4<2<3<4.tcore1.svw<singapore.as6453.net Tata.Comm. Singapore ms if<2<2.tcore2.svw<singapore.as6453.net Tata.Comm. Singapore ms if<7<2.tcore2.lvw<losangeles.as6453.net Tata.Comm. Los.Angeles ms if<2<2.tcore1.lvw<losangeles.as6453.net Tata.Comm. Los.Angeles ms if<8<2.tcore2.dt8<dallas.as6453.net Tata.Comm. Dallas ms if<3<0<0<35.core1.dtx<dallas.as6453.net Tata.Comm. Dallas ms ix<3<1<0.core1.dtx<dallas.as6453.net Tata.Comm. Dallas ms cr2<tengige0<7<5<0.dallas.savvis.net Savvis Dallas ms cr1<te<0<6<0<1.sfo.savvis.net Savvis San.Francisco ms er1<te<1<0<1.sanjose3equinix.savvis.net Savvis San.Jose ms hr1.gig<3<0<18.singapore.sg8.savvis.net Savvis Singapore ms 16

17 Hairpinning Example #3 Geographic locality Internet locality Internet traffic can take some surprising paths Singapore -> Singapore via San Jose, California te1*1.tsr1.sin1.sg.voxel.net Voxel5Dot5Net,5Inc. Singapore 0.2 ms mpr2.g1*5.inapvoxcust*7.sin001.pnap.net Internap5Network5 Singapore 0.3 ms ae0*106.sin11.ip4.tinet.net Tinet5International Singapore 0.4 ms xe*1*3*2.sjc10.ip4.tinet.net Tinet5International San5Jose ms xe*0.equinix.snjsca04.us.bb.gin.ntt.net Equinix,5Inc. San5Jose ms ae*7.r20.snjsca04.us.bb.gin.ntt.net NTT5America,5Inc. San5Jose ms as*6.r20.sngpsi02.sg.bb.gin.ntt.net NTT5Singapore5Ltd Singapore ms ae*0.r21.sngpsi02.sg.bb.gin.ntt.net NTT5Singapore5Ltd Singapore ms 17

18 What drives low-latencies in Internet traffic? Subsea cables provide options, however actual paths matter! Paths determined by multiple factors Business relationships / Politics Transit pricing Routing (Mis)configurations Cables provide physical diversity Not necessarily low-latency paths 18