internet structural analysis by end to-end measurement
TRANSCRIPT
Internet Structural Analysisby End-to-End Measurement
NTT Communications
KAMEI Satoshi <[email protected]>
OOKI Motoyuki <[email protected]>
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2015.10.31@Yokohama, Japan
IRTF & ISOC Workshopon Research and Applications
of Internet Measurements (RAIM)in Cooperation with ACM SIGCOMM
Internet Structural Analysis by End-to-End Measurement
• Motivation and Research Interest– Focused on structural analysis of the Internet mainly using by end-to-
end active measurement.
– Our target is Improving customer satisfaction, Designing networks, and Planning business strategies, as a global Tier 1 carrier and a largest Japanese ISP operator.
– Recently the large ISPs traffic share is decreasing, though they could gather many data from internal equipment.
• CDN analysis– Observed two big events, iOS8 and Windows10 distribution, the
results are in following slides.
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Our Measurement system3
HokkaidoTokyoKanagawaOsakaFukuoka
Box plots of throughput of major CSP from some regional area
ISP A
ISP B
ISP C
← Regional Area →
Setting over 150 active probes connected with residential FTTH access.
Measuring ICMP RTT, trace, DNS lookup and http throughput from the viewpoint of end-user.
4
CDN analysis (iOS8 update : 2014/09)
↑
ISPs
↓
from Akamai Cache
from Apple
from LimeLightDNS response analysis from 9 ISPs
iOS8 may mainly from apple AS andSome traffics are offloaded to CDNs.
Start ▲
ISP X
DN
S re
spo
nse
rat
io b
y A
S
5
CDN analysis (Windows10: 2015/08)
↑
ISPs
↓
DNS response analysis from 10 ISPs
Win10 may distributed from two CDNs.Microsoft traffic is very small.Some ISPs Akamai cache are not used.Level3 may not used for Win10.
Start ▲
LimeLight
Microsoft
Level3
Akamai(Cache)
Akamai AS
ISP Y
DN
S re
spo
nse
rat
io b
y A
S
Discussion
• Most of Internet traffic is not operated by BGP, but DNS and Application Layer control.
• End-to-End measurement is one of the most effective method to know behavior of Large Contents Providers.
• Passive and Internal equipment data is easy to collect but observation area is limited, and active measurement is easy to expand observation but difficult to planning.
• We should share end-to-end measurement results and collaborative analysis to know the Internet and sound development of it.
• Our proposal of measurement system is applied to IETF LMAP WG [*].
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[*] draft-ooki-lmap-internet-measurement-system-02