Major Japanese cellular carriers have announced they will start full IPv6 service in 2017, with one carrier already starting their IPv6 service. Many fixed-line ISPs have also started commercial IPv6 service for both enterprise and consumer users, and some are migrating existing IPv4-only users to dual-stack environments. While IPv6 adoption is increasing in government services and the network core, large content providers have not yet supported IPv6, though they are starting to consider implementation.

1. Japan IPv6 Measurement
Tomohiro Fujisaki
NTT/IPv6 Promotion Council in Japan
IPv6 Readiness Measurement BoF
APNIC 43
28 February 2017

2. Summary of IPv6 deployment status in Japan
n Networks
n Major three cellular carriers announced they
would start full IPv6 service in 2017.
n One of them has started their IPv6 service.
n Many fixed-line ISPs have started their
commercial IPv6 service for both enterprise and
consumer users.
n Some ISPs have been migrating their existing IPv4 only
users to dual stack environment.
n Contents
n IPv6 ready Government’s services are increasing.
n Large contents provides do not support IPv6 yet.
n Start considering to implement.
2

3. IPv6 readiness measurement in JP
n Core Network
n IPv6 allocated prefixes
n IPv6 penetration rate in Internet backbone
n Number of IPv6 enabled of Transit AS in BGP routing tables.
n Access Network
n IPv6 consumer service penetration rate
n User traffic
n IPv6 traffic to Google servers
n Applications
n IPv6 penetration rate : web servers
n IPv6 servers in .jp domain
n Government IPv6 services
n Products
n IPv6 Ready logo products
3

4. IPv6 allocated prefixes in Japan
4
http://www.vyncke.org/ipv6status/plotbgp.php?country=jp
Allocated
Announced
Active
Core Network

5. JPNIC address distribution trends
5
0
5
10
15
20
25
30
35
40
45
0
50
100
150
200
250
年 '01 '02 '03 '04 '05 '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17
Number of allocation (PA)
Number of assignemnet (PI)
(# of PI)
(As of 31 Jan. 2017)
(# of PA)
Core Network

6. IPv6 Address distribution status in JPNIC
6
40.9%
4.6%
59.1%
95.4%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Number of LIRs Number of IPv4 address
IPv4/IPv6 LIRs
IPv4 only LIRs
246
170
IPv4/IPv6 LIRs
IPv4 only LIRs
Core Network

7. IPv6 penetration rate in Internet backbone
The number of IPv6 enabled Transit AS in BGP routing
tables (as of 21st February 2017).
http://v6pc.jp/jp/spread/ipv6spread_02.phtml
7
Core Network

8. IPv6 consumer service penetration rate in Japan
n Target services:
n ISPs using NTT East & West Internet access
platform (Flets)
n For reference:
n KDDI au Hikari (KDDI)
n Chubu Telecommunication co, Inc. (CTC)
n % of IPv6 users in above services.
n These statistics has been collected and
announced by IPv6 Promotion Council.
8
Access Network

9. n Fiber service is about 74% of the total.
Fixed Internet access service in Japan
http://www.soumu.go.jp/main_sosiki/joho_tsusin/kyousouhyouka/data.html
Number of subscribers in fixed broadband access
2011.3 2012.3 2013.3 2014.3 2015.3 2015.9 2015.12 2016.3 2016.6 2016.9
(Fixed broadband) (CATV Internet)
(Unit: 10K)
Access Network

10. Fiber access line service share in Japan
• Over 50% ISPs use NTT East & West Internet access
platform (called ‘Flets’)
• NTT’s access platform supports IPoE and PPPoE to access IPv6
Internet
NTT East
NTT West
FTTH market share trends in fixed broadband access
From http://www.soumu.go.jp/main_sosiki/joho_tsusin/kyousouhyouka/data.html
NTT East&West
Access Network

11. IPv6 consumer service penetration rate in Japan
- NTT’s service platform users-
Unit: 1K
Produced from: http://v6pc.jp/jp/spread/ipv6spread_03.phtml
Access Network
67 121 182 235 287 357
426 613
854
996
1,474
1,803
2,183
2,590
3,208
3,813
4,282
0.8%1.4%2.0%2.5%
2.7%
3.2%
3.1%
3.9%
5.3%
6.1%
8.8% 10.6%
12.6%
14.8%
17.9%
20.8%
22.9%
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
0
1,000
2,000
3,000
4,000
5,000
Number of NTT's IPv6 service user
Persentage of IPv6 user

12. IPv6 consumer service penetration rate in Japan
-KDDI and CTC-
Produced from: http://v6pc.jp/jp/spread/ipv6spread_03.phtml
Access Network
55%
61% 63% 65% 66%
67%
68%
100% 100% 100% 100% 100%100%
24%
29%
36%
40%
44%
48%
53%
58%
64%
70%
75%
78%
81%
84%
87%88%90%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
'12.12 '13.03 '13.06 '13.09 '13.12 '14.03 '14.06 '14.09 '14.12 '15.03 '15.06 '15.09 '15.12 '16.03 '16.06 '16.09 '16.12
KDDI au Hikari
CTC Comifa HIKARI

13. IPv6 traffic to Google servers
As of 16th February 2017
• This table shows the
amount of IPv6 traffic
from the major
networks (ASNs) in
Japan to Google.
• Absolute number of
IPv6 traffic is ranked
higher.
• Of the total number
of access, right-most
column shows the
proportion of the
IPv6 access.
13
User traffic

14. IPv6 Users penetration measured by
Akamai, APNIC and Google
As of 21st February 201714
https://www.vyncke.org/ipv6status/plotpenetration.php?country=jp

15. IPv6 penetration rate : web servers
15
The number of IPv6 enabled site in the top 500 web sites which
is published by Alexa Internet, Inc (as of 21st Feb. 2017).
http://www.inetcore.com/project/metrics/index.html.en
Applications

16. n IPv6 supported .jp domain servers
IPv6 supported .jp domain servers
16
http://v6metric.jp/html/st04/04.php
as of 21st Feb. 2017
Applications
http://v6metric.jp/html/st04/02.php

17. IPv6 services in Governments
n Japanese governments’ service has been
implementing IPv6.
n In 34 servers:
17
http://www.attn.jp/ipv6status/jp/go/
2013/11/29 2015/9/2 2016/2/15 2016/9/27 2017/2/21
Web 32% 50% 59% 59% 61%
Mail 18% 26% 26% 26% 32%
DNS 62% 76% 94% 94% 94%
Applications

18. Number of products with IPv6 Ready Logo (JP)
as of 15th Feb. 2017
Products
0
2
4
6
8
10
12
14
16
18
20
0
50
100
150
200
250
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
20…
MultipleAmount
IPv6 Ready Logo Phase-2 Approval Products in Japan
Multiple
Amount
SimgleAmount

19. Recent IPv4 over IPv6 implementation in Japan
n Cost of dual stack network management is
so high.
n Implementation of “IPv4 as a Service
(IPv4aaS)” is ongoing world-widely.
n IPv4aaS: Providing IPv4 Internet access service on
IPv6 only network.
n Some U.S. cellular carriers have implemented
IPv4aaS, and some U.S. contents providers
consider to migrate their internal network to IPv6
only.
19

20. IPv4aaS in Japan
• Some IPv4aaSs implementation in Japan
v6Plus: MAP-E by JPNE
http://www.jpne.co.jp/service/v6plus/
Transix: DS-Lite by IMF
http://www.mfeed.ad.jp/transix
/
IPv6v4 Exchange: 464XLAT by JPIX
http://www.jpix.ad.jp/jp/service/ipv6v4.html
(Trial)

21. Summary
• Major mobile carriers, NTT Docomo,
KDDI and Softbank will start full IPv6
service in this year.
• Softbank already started their IPv6 service.
• Many ISPs are IPv6 ready, and user
migration from IPv4 only to dual stack
environment is ongoing.
• Need to tackle to improve contents area:
n Some big content providers start to consider
to implement IPv6.21

22. 22
Questions?