NTTがIPv6インターネットと接続されていないIPv6を提供した理由や背景などを紹介しています。 可能な限り技術的な部分を語らないという方向性で資料が作成されているので、エンジニアな方々には多少もの足りないかも知れません。

3. •
•
•
•
•

5. •
•
•

6. 32
192 . 0 . 2 . 1
11000000 00000000 00000010 00000001
8
128
2001 : 0db8 : 11aa : 22bb : 33cc : 44ee : 55ff : 0006
0010 0000 0000 0001
16

8. IPv4
IPv6

10. •
•
•
•
•
•

11. RIPE-NCC
ARIN
APNIC
AfriNIC
LACNIC

12. IANA
RIPE-
RIR ARIN APNIC LACNIC AfriNIC
NCC
… … … …
…
NIR CNNIC IDNIC JPNIC TWNIC VNNIC
…
LIR ISP

13. IPv4

14. IPv4

16. •
•
•

17. •
•
•

19. •
•

20. IPv4 IPv4 IPv4
IPv4 IPv4 IPv4
IPv4 IPv4 IPv4
1IPv4
IPv4 IPv4 IPv4

21. Large Scale NAT
ISP SOHO
NAT

23. •
•
•
•

26. •
•
•

27. •
•

28. •
•
•
•
•

30. •
•
•
•

33. •
•
•
•
•

34. •
•
•

35. •
NGN PPPoE
ISP
NGN

36. •
NGN

37. •
•

39. •
•

40. •
•

41. ISP
IPv4
ISP
ISP
ISP
NTT ISP

42. IPv4
ISP ISP
A POI B POI C POI
A IP B IP C IP
POI : Point Of Interface

43. IPv4
ISP
ISP
IIJ FreeBit Vectant NTT PC
A POI B POI C POI
A IP B IP C IP

44. IPv4
C C POI
ISP OK
A POI B POI C POI
A IP B IP C IP

46. IPv4
IPv4
ISP
NTT IPv6
IPv4
IPv6

47. IPv6 IPv4
IPv4
IPv6

48. IPv4
IPv4
ISP
NTT IPv6
IPv6 TCP IPv4
SYN
TCP
RST
IPv6 TCP RST
IPv4

50. IPv6
IPv6
ISP A NTT NGN
2001:db8:aaaa::/48 2001:db8:beef::/48
A B 2001:db8:beef:cccc::1
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::2
2001:db8:aaaa:0001::2
IPv6

51. IPv6
IPv6
ISP A NTT NGN
2001:db8:aaaa::/48 2001:db8:beef::/48
A B 2001:db8:beef:cccc::1
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::2
2001:db8:aaaa:0001::2 2001:db8:aaaa:0001::2
IPv6
A

52. IPv6
IPv6
ISP A NTT NGN
2001:db8:aaaa::/48 2001:db8:beef::/48
A B 2001:db8:beef:cccc::1
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::2
2001:db8:beef:cccc::2 2001:db8:aaaa:0001::2
IPv6
A

54. IPv6
ISP ISP
A POI B POI C POI
A NGN B NGN C NGN
POI : Point Of Interface

55. ISP VNE
ISP IPv6
ISP
VNE VNE VNE
VNE IPv6 NGN
ISP

57. •
•
•

58. •
•

59. •

61. •
•
•
•
•