International Expert Symposium in Fukushima: Radiation and Health Risks

Selected articles from the International Expert Symposium in Fukushima: Radiation and Health Risks (11–12 September 2011)

get the paper here.

Total Internet Exchange Average Peak Traffic in Japan

Source from Ministry of Internal Affairs and Communications Japan.

http://www.soumu.go.jp/johotsusintokei

The average peak Internet Exchange traffic in Japan is shown as follows:

Total Internet Exchange Average Peak Traffic in Japan

Since January 2011 the measurement included Equinix's BBIX.

Dual stack IPv4/IPv6 RTT from AS4717 to Indonesia

I am currently measuring RTT from ASN4717 to several dual stack IPv4/IPv6 servers in Indonesia for every 5 minutes.


















It is clear that IPv6 RTTs are not symmetric with IPv4 RTTs because of different path/routing between IPv4 and IPv6. NTT and CBN are exception. Their paths are symmetric from AS4717.

Above graphs are also available on http://sfc-monitor.ai3.net/~dikshie/indonesia/ (IPv6 only)
If you need the data (only available in RRD format) please contact me.

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Internet traffic in Japan

Source from Ministry of Internal Affairs and Communications Japan.

http://www.soumu.go.jp/johotsusintokei

Figure 1. Measurement Map

There are 6 ISPs involved in this study.
Figure 1 explanation as follows:
A1: Broadband users traffic.
A2: Dialup, dedicated line, and data center traffic.
B1: Peering traffic with Internet Exchange (IX).
B2: Peering traffic with domestic ISPs.
B3: Peering traffic with overseas ISPs.

Based on figure.1 above, Total amount traffic in Japan as follows:

Year	Month	A1 (IN) Gbps	A1 (OUT) Gbps
2004	9	98.1	111.8
2004	10	108.3	124.9
2004	11	116.0	133.0
2005	5	134.5	178.3
2005	11	146.7	194.2
2006	5	173.0	226.2
2006	11	194.5	264.2
2007	5	217.3	306.0
2007	11	237.2	339.8
2008	5	269.0	374.7
2008	11	302.02	432.9
2009	5	349.5	501.0
2009	11	373.6	539.7
2010	5	321.9	536.4
2010	11	311.1	593.0
2011	5	302.5	662.0
2011	11	-	-

Year	Month	A2 (IN) Gbps	A2 (OUT) Gbps
2004	9	14.0	13.6
2004	10	15.0	14.9
2004	11	16.2	15.6
2005	5	23.7	23.9
2005	11	36.1	29.6
2006	5	42.9	38.3
2006	11	50.7	46.7
2007	5	73.8	57.8
2007	11	85.4	63.2
2008	5	107.0	85.0
2008	11	122.4	88.7
2009	5	154.4	121.4
2009	11	169.4	127.6
2010	5	178.8	131.2
2010	11	190.1	147.5
2011	5	193.9	174.4
2011	11	-	-

Year	Month	B1 (IN) Gbps	B1 (OUT) Gbps
2004	9	35.9	30.9
2004	10	36.3	31.8
2004	11	38.0	33.0
2005	5	47.9	41.6
2005	11	54.0	48.1
2006	5	66.2	60.1
2006	11	68.4	62.3
2007	5	77.4	70.8
2007	11	93.5	83.4
2008	5	95.7	88.3
2008	11	107.5	102.5
2009	5	111.7	104.9
2009	11	114.3	19.8
2010	5	94.1	91.0
2010	11	90.1	91.6
2011	5	87.0	86.9
2011	11	-	-

Year	Month	B2 (IN) Gbps	B2 (OUT) Gbps
2004	9	48.2	37.8
2004	10	53.1	41.6
2004	11	55.1	43.3
2005	5	73.3	58.4
2005	11	80.9	68.1
2006	5	94.9	77.6
2006	11	107.6	90.5
2007	5	124.5	108.4
2007	11	129.0	113.3
2008	5	141.2	119.4
2008	11	155.6	132.3
2009	5	185.0	155.4
2009	11	209.5	154.3
2010	5	194.8	121.4
2010	11	198.7	117.2
2011	5	254.2	134.6
2011	11	-	-

Year	Month	B3 (IN) Gbps	B3 (OUT) Gbps
2004	9	25.3	14.1
2004	10	27.7	15.4
2004	11	28.5	16.7
2005	5	40.1	24.1
2005	11	57.1	39.8
2006	5	68.5	47.8
2006	11	94.5	57.8
2007	5	116.4	71.2
2007	11	133.7	81.8
2008	5	152.6	94.4
2008	11	176.1	110.8
2009	5	213.1	126.4
2009	11	248.2	148.3
2010	5	286.9	155.5
2010	11	330.1	144.9
2011	5	420.9	160.5
2011	11	-	-

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Internet Users in Japan

Source from Ministry of Internal Affairs and Communications (MIC)
http://www.soumu.go.jp/johotsusintokei

Year	Total users	Penetration rate
1998	16940000	13.4%
1999	27060000	21.4%
2000	47080000	37.1%
2001	55930000	46.3%
2002	69420000	57.8%
2003	77300000	64.3%
2004	79480000	66.0%
2005	85290000	70.8%
2006	87540000	72.6%
2007	88110000	73.0%
2008	90910000	75.3%
2009	94080000	78.0%
2010	94620000	78.2%

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ICT Responses to the Great East Japan Earthquake

Presentation "ICT Responses to the Great East Japan Earthquake" is available on:
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/111208_1.pdf
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Cloud Services in Japan

Presentation "Cloud Services in Japan" is available on
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/111102_1.pdf
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Law and Policy for Broadband Deployement in Japan

Presentation "Law and Policy for Broadband Deployment in Japan" is available on
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/100408_1.pdf
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Japan National Broadband Policies

Presentation of Japan National Broadband Policies is available on:
http://www.soumu.go.jp/main_sosiki/joho_tsusin/eng/presentation/pdf/091019_1.pdf
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Maintaining Communications Capabilities during Major Natural Disasters and other Emergency Situations

Final report from Internal Affairs and Communications "Maintaining Communications Capabilities during Major Natural Disasters and other Emergency Situations" is available on
http://www.soumu.go.jp/main_content/000146938.pdf
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