Content-Delivery Networks: Powering Network Infrastructure for the Future
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1 Content-Delivery Networks: Powering Network Infrastructure for the Future
2 Michael K. Smith Director of APAC Interconnection Netflix Network and Internet Engineering Datacenter Deployment CDN Engineering Community Outreach (NANOG, APRICOT) Internet Security
3 What s the prevailing wisdom about Internet in India?
4
5 The common theme is extremes and all the terms are emotionally charged
6 So what is network performance really like in India?
7 - Per-subscriber throughput - TCP Retransmits - Network congestion at the provider level How does Netflix measure Quality of Experience? - Median Play Delay
8 India and Brazil Compare and Contrast
9 Broadband Households 4G Mobile India 18.8 Million 124 Million Country Statistics Comparison Brazil 27.2 Million 70 Million Source:
10 Brazil ISP Speed Index Net Virtua Live TIM Vivo Fibra Algar Oi Vivo Internet India Spectranet Star Digital airtel /25/2017 6/29/2017 7/3/2017 7/7/ /11/2017 7/15/2017 7/19/2017 7/23/2017 ATRIA Convergence Technologies Hathway Syscon Infoway ISP Net Virtua Live TIM Vivo Fibra Algar Oi Vivo Internet Speed (Mb) Rank YOU Broadband D-VoiS Reliance Communications tikona Tata Communications MTNL /25/2017 6/29/2017 7/3/2017 7/7/2017 7/11/2017 7/15/2017 7/19/2017 7/23/2017 BSNL ISP Spectranet 7 Star Digital airtel ATRIA Convergence Technologies Hathway YOU Broadband Syscon Infoway D-VoiS Reliance Communications tikona Tata Communications MTNL BSNL Speed (Mb) Rank
11 ISP Speed Index
12 Play Delay Play Delay India and Brazil First 19 Months India Brazil
13 Play Delay India and Brazil Today
14 We expect India to grow like Brazil Consistent growth in content viewing Robust competitive OTT environment Increasing interconnection options Network performance is getting better
15 A scalable platform for increasing consumer quality of experience by maximizing the network efficiencies of moving content closer to the user. What is a CDN?
16 Why are CDNs Important?
17
18 The Internet in 2000
19 - Eyeball networks - Transit ISPs serving lots of local ISPs - Very limited peering - Clear-cut distinction between services - Transit did transit - Eyeballs did eyeballs - Content did content The Internet in 2000
20 The Internet in 2015
21 - Lots of peering options - Very few ISP options - Network providers have multiple interests - Transit services - Access to eyeballs - Content The Internet in 2015 (Today)
22 Massive growth + new ideas = CDNs are born
23 Akamai Limelight Edgecast (Verizon), BitGravity (Tata), Level3, Cloudflare, Fastly, etc. Early CDN Evolution
24 Netflix Google Microsoft Achieving efficiencies at scale - single tenant CDN
25 How do CDNs work?
26 Without CDNs CDNs A user requests a piece of content
27 What CDNs Provide?
28 - Network efficiency through path minimization - Quality of Experience by reducing latency and loss - Cost efficiency by eliminating costly interprovider links - Internet stability through traffic localization CDNs provide
29 Path India to US without CDN Michaels-MacBook-Pro:~ mksmith$ traceroute traceroute to ( ), 64 hops max, 52 byte packets ( ) ms ms ms ( ) ms ms ms static-delhi-vsnl.net.in ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms 6 ix-ae-4-2.tcore1.cxr-chennai.as6453.net ( ) ms ms ms 7 if-ae-5-2.tcore1.svw-singapore.as6453.net ( ) ms 8 if-ae-11-2.thar1.svq-singapore.as6453.net ( ) ms * * 9 ae-6.r00.sngpsi05.sg.bb.gin.ntt.net ( ) ms if-ae-20-2.tcore1.svq-singapore.as6453.net ( ) ms ms 10 ae-10.r20.sngpsi05.sg.bb.gin.ntt.net ( ) ms ms if-ae-7-2.thar1.svq-singapore.as6453.net ( ) ms 11 ae-6.r00.sngpsi05.sg.bb.gin.ntt.net ( ) ms ae-8.r22.snjsca04.us.bb.gin.ntt.net ( ) ms * 12 ae-10.r20.sngpsi05.sg.bb.gin.ntt.net ( ) ms ms ae-0.r23.snjsca04.us.bb.gin.ntt.net ( ) ms 13 ae-3.r21.sttlwa01.us.bb.gin.ntt.net ( ) ms ae-8.r22.snjsca04.us.bb.gin.ntt.net ( ) ms ms 14 ae-11.r04.sttlwa01.us.bb.gin.ntt.net ( ) ms ae-0.r23.snjsca04.us.bb.gin.ntt.net ( ) ms ae-11.r04.sttlwa01.us.bb.gin.ntt.net ( ) ms 15 ae-0.seattles-best-internet.sttlwa01.us.bb.gin.ntt.net ( ) ms ms ms 16 agg2-sea-a-t8-2.bb.spectrumnet.us ( ) ms agg2-sea-a-t9-3.bb.spectrumnet.us ( ) ms agg2-sea-a-t9-2.bb.spectrumnet.us ( ) ms 17 ae-0.seattles-best-internet.sttlwa01.us.bb.gin.ntt.net ( ) ms panang-lo.alt.net ( ) ms ms 18 c5.seattleix.net ( ) ms ms agg2-sea-a-t8-2.bb.spectrumnet.us ( ) ms
30 Path Indian Site with CDN Michaels-MacBook-Pro:~ mksmith$ traceroute traceroute to e8827.a.akamaiedge.net ( ), 64 hops max, 52 byte packets ( ) ms ms ms ( ) ms ms ms static-delhi-vsnl.net.in ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms static-mumbai.vsnl.net.in ( ) ms ms ms 7 a deploy.static.akamaitechnologies.com ( ) ms ms ms
31 ISP Customer Homes ISP Network Peak Required Netflix Capacity 350Gbps Peak Required Upstream Capacity 1Tbps
32 ISP Customer Homes ISP Network Peak Required Netflix Capacity 0 Peak Required Upstream Capacity 650Gbps
33 What CDNs don t provide?
34 - Zero additional traffic prioritization - Cost efficiencies for small content providers CDNs don t provide
35 - Traffic continues to grow - Through subscriber growth, particularly mobile - Through increased use of Internet versus other delivery mechanisms - Entertainment - Non-entertainment - New technologies (virtual reality) - Ubiquitous access
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