ipv6.pdf

Transcript

1. IPv6/IPv4 Tunnel Broker Xin LIU lx@ns.6test.edu.cn August 2003
2. Outline • What is IPv6 • Transition from IPv4 to IPv6 • What is Tunnel Broker • How to Use a Tunnel Broker
3. What is IPv6 • IPv6 = Internet Protocol Version 6 • IPv6 is the next generation IP • Some Attractive Features of IPv6 – Larger address space – Aggregated routing structure – Better auto-configuration – Better mobility support – Flow label – Better multicast support
4. Transition from IPv4 to IPv6 • IPv4 is widely used today • IPv6 could not intercooperate with IPv4 • Transition from IPv4 to IPv6 will take a long time
5. Islands in a Sea • At the beginning of the trasition IPv4 IPv6 Node IPv6 Node IPv6 Node
6. IPv6/IPv4 Tunneling • Tunneling is the key to inter-connect isolated IPv6 islands in the IPv4 sea IPv4 Header IPv6 Header IPv6 Payload IPv6 Packet IPv6 Packet IPv6 Packet
7. IPv6/IPv4 Tunneling ( Cont'd ) • IPv6 virtual network IPv4 IPv6 Node IPv6 Node IPv6 Node
8. How to Setup a Tunnel XXX.XXX.XXX.XXX Linux 2.4.x YYY.YYY.YYY.YYY FreeBSD 4.x iptunnel add whatever mode sit ttl 30 \ local xxx.xxx.xxx.xxx \ remote yyy.yyy.yyy.yyy ifconfig whatever up ifconfig whatever inet6 3ffe:3200::1/126 ifconfig gif10 create gifconfig gif10 inet \ xxx.xxx.xxx.xxx \ yyy.yyy.yyy.yyy ifconfig gif10 up ifconfig gif10 inet6 \ 3ffe:3200::2 3ffe:3200::1 \ prefixlen 128
9. How to Setup a Tunnel ( Cont'd ) • A tunnel is a virtual point-to-point link • Tunnel parameters – Local IPv4 address – Remote IPv4 address – Local IPv6 address – Remote IPv6 address
10. Tunnel Management • Tunnel setup requires manual configuration and administrators' cooperation • Problems – High workload – Prone to errors – Low efficiency • How to eliminate manual work of tunnel management?
11. Tunnel Broker • Features – Working like a virtual ISP – Allocating IPv6 address blocks to users – Setting up IPv6/IPv4 tunnels for users – Optionally giving domain names to users • RFC3053
12. Tunnel Broker Architecture TB TS TS TS DNS Tunnel Broker System User IPv6/IPv4 Tunnel
13. Tunnel Broker Components • Tunnel Server ( TS ) – Connecting IPv4 and IPv6 world – Tunnel endpoints for users – Routing for users' IPv6 address blocks • DNS System ( DNS ) – Providing name to IPv6 address mappings for users • Tunnel Broker ( TB ) – Controller – Interacting with users
14. Where are Tunnel Brokers • Some live tunnel broker systems in the real world – Hurricane Electronic IPv6 Tunnel Broker http://ipv6tb.he.net/ – BTexact IPv6 Tunnel Broker https://tb.ipv6.btexact.com/ – ASCC IPv6 Tunnel Broker http://ipv6tb.he.net/ • Our tunnel broker system – CERNET IPv6 Tunnel Broker http://tb.6test.edu.cn/
15. Using a Tunnel Broker • Home page ( http://tb.6test.edu.cn )
16. Using a Tunnel Broker ( Cont'd ) • User interface
17. Using a Tunnel Broker ( Cont'd ) • Register
18. Using a Tunnel Broker ( Cont'd ) • Get information
19. Using a Tunnel Broker ( Cont'd ) • Activate the tunnel
20. Using a Tunnel Broker ( Cont'd ) • Get information
21. Using a Tunnel Broker ( Cont'd ) • Finish the tunnel configuration
22. Using a Tunnel Broker ( Cont'd ) • Now in the IPv6 world
23. Using a Tunnel Broker ( Cont'd ) • TBClient ( http://tb.6test.edu.cn )
24. Using a Tunnel Broker ( Cont'd ) • More words on CERNET IPv6 Tunnel Broker – New version is in development – More advance functionalities – Open source implementation will be on SourceForge
25. IPv6-ware • OSes – Linux >= 2.4.x – FreeBSD >= 4.x – Solaris >= 8 – Windows >= 2000 • Applications – Mozilla – lftp • More – http://www.ipv6.org – http://www.bieringer.de/linux/IPv6/
26. The End Enjoy IPv6 !