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IVI trials. X. Li, C. Bao 2010-08-25. CERNET IPv6 transition experience. Dual-Stack NFSCNET. Tunnel IPv4 over IPv6 IETF softwire WG. Tunnel IPv6 over IPv4 CERNET-6Bone. Translation IVI Bi-direction Stateless Translation IETF Behave WG. IPv6 only CERNET2 100 universities

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ivi trials

IVI trials

X. Li, C. Bao

2010-08-25

cernet ipv6 transition experience
CERNET IPv6 transition experience

Dual-Stack

NFSCNET

Tunnel

IPv4 over IPv6

IETF softwire WG

Tunnel

IPv6 over IPv4

CERNET-6Bone

Translation

IVI

Bi-direction Stateless Translation

IETF Behave WG

  • IPv6 only
  • CERNET2
  • 100 universities
  • 1M subscribers
  • IPv4
  • CERNET
  • 1500 universities
  • 20M subscribers

1998

2001

2004

2006

2007

2008

1994

2005

cernet cngi cernet2
CERNET /CNGI-CERNET2

Global IPv4

Global

IPv6

CERNET (IPv4)

CERNET2 (IPv6)

4

Promotion of IPv6

translation technologies
Translation technologies
  • 1:1 IVI
    • Stateless in the core
  • 1:N dIVI
    • Stateless in the core
    • Partial state in the edge
    • Can save IPv4 addresses
    • No need for ALG

Vendor supports

deployment

servers

clients

1:1

IVI

IPv4/IPv6

The IPv4

Internet

PE

PE

IPv4/IPv6

Core Network

IPv6

Access

network

PE

The IPv6

Internet

PE

PE

1:N

IVI

Dual-stack core

XLATE

IPv6 access

Deployment

IPv6

Shared IPv4

trials
Trials
  • CNGI-CERNET2
    • 100 campus networks
  • China SP
    • ASDL users
      • Service continuity
      • Support existing applications
      • Transit to IPv6
cngi cernet2 trial

Campus

CERNET

CERNET

主干

校园

IVI IPv6

IVI IPv6

IVI IPv6

IVI IPv6

IPv6

IPv6

IPv6

计算机

计算机

Internet

Internet

Internet

校园

Non

Non

-

-

IVI IPv6

IVI IPv6

计算机

CNGI

CNGI

-

-

CERNET2

CERNET2

CNGI

-

CERNET2

校园网

IPv6/48

校园

IPv6/32

IPv6/32

IPv6/32

IPv6/48

主干

IVI

core

Non

Non

-

-

IVI IPv6

IVI IPv6

IVI

设备

IPv4

IPv4

IPv4

计算机

Internet

Internet

Internet

DNS64

DNS46

IVI

主干

DNS

CNGI-CERNET2 trial

100 universities

sp trial

IPv4/IPv6

core

IPv6

MAN

BRAS

CPEs

SP trial
  • SP:
  • Stateless in the core
  • IPv6 single stack access network
  • Use public IPv4 address effectively
  • Simple log
  • User:
  • A fractional IPv4 (1/128)
    • 512 concurrent sessions
    • No need for DNS64
    • No need for ALG
  • A /64 IPv6
    • 64K concurrent sessions
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