ipv6 introduction & environment buildup
- 1. IPv6 Introduction & Environment Buildup Eric 2012-06-01 1
- 2. Outline Overview of functionality IPv6 format IPv6 addressing Build up IPv6 environment 2
- 3. Overview of functionality Expanded addressing capability and auto configuration mechanisms. Simplification of the header format. Improved support for extensions and options. 3
- 4. Overview of functionality Extensions for authentication and privacy. Flow labeling capability. 4
- 5. IPv6 format 5
- 6. Structure of IPv6 Protocol 16 bytes 16 bytes 6
- 7. Structure of IPv6 Protocol Next header 7
- 8. IPv6 type IPv4 knows unicast, broadcast, and multicast addresses. With IPv6, the broadcast address is not used anymore; multicast addresses are used instead. This is good news because broadcasts are a problem in most networks. 8
- 9. IPv6 type Unicast : A unicast address uniquely identifies an interface of an IPv6 node. A packet sent to a unicast address is delivered to the interface identified by that address. 9
- 10. IPv6 type Multicast : A multicast address identifies a group of IPv6 interfaces. A packet sent to a multicast address is processed by all members of the multicast group. 10
- 11. IPv6 type Anycast : An anycast address is assigned to multiple interfaces (usually on multiple nodes). A packet sent to an anycast address is delivered to only one of these interfaces, usually the nearest one. 11
- 12. General rules Each interface of a node needs at least one unicast address. A single interface can also be assigned multiple IPv6 addresses of any type (unicast, multicast, and anycast). 12
- 13. General rules IPv6 supports addresses of different scopes . There are global and non- global (e.g., link-local, private ip) scopes. 13
- 14. Address Notation 2001:0DB8:0000:0000:0202:B3FF:FE1E:8329 2001:DB8:0:0:202:B3FF:FE1E:8329 2001:DB8::202:B3FF:FE1E:8329 2001:DB8::202:B3FF:254.30.131.41 14
- 15. Address Notation 2001:DB8:0000:0056:0000:ABCD:EF12:1234 2001:DB8::56:0:ABCD:EF12:1234 2001:DB8:0:56::ABCD:EF12:1234 15
- 16. Address Notation 192.168.0.2 x:x:x:x:x:x:192.168.0.2 0:0:0:0:0:0:192.168.0.2 ::192.168.0.2 or ::C0A8:2 16
- 17. Prefix Notation prefix interface ID n bit 128-n bit The prefix length specifies how many left-most bits of the address specify the prefix. This is another way of noting a subnet mask. 2001:DB8:0000:0056:0000:ABCD:EF12:1234/64 2001:DB8:0000:0056::/64 17
- 18. Routing Prefixes Allocation Prefix binary Prefix hex unassigned 0000 0000 ::0/8 reserved 0000 0001 global unicast 00 1 2000::/3 link-local unicast 1111 1110 10 FE80::/10 Reserved(formely FEC0::/10 1111 1110 11 site-local unicast) deprecated local ipv6 address 1111 110 FC00::/7 private admin 1111 1101 FD00::/8 multicast 1111 1111 FF00::/8 18
- 19. Global Unicast Address 00-02-b3-1e-83-29 interface ID assigned by DHCPv6 00-02-b3-ff-fe-1e-83-29 from MAC address 02-02-b3-ff-fe-1e-83-29 19
- 20. Global Unicast Address Prefix : 001 TLA ID : 世界ISP業者最佳化路徑 Res: reserved NLA ID : ISP業者內部最佳化路徑 20
- 21. Global Unicast Address Prefix Allocation RFC Sub-TLA assignments ARIN 2001:0400::/29 2001::/16 RIPE NCC 2001:0600::/29 RFC 2450 APNIC 2001:0200::/29 2002::/16 6to4 RFC 3056 3FFE::/16 6Bone Testing RFC 2471 21
- 22. Link- and Site-Local Address Link-local address 1111 1110 10 0 interface ID 10 bits 54 bits 64 bits hex: FE80 Site-local address 1111 1110 11 0 subnet interface ID 10 bits 38 bits 16 bits 64 bits hex: FEC0 22
- 23. Special Addresses The unspecified address The unspecified address has a value of 0:0:0:0:0:0:0:0 and is therefore also called the all-zeros address . It is comparable to 0.0.0.0 in IPv4. Used as a Source address by a host during the boot process when it sends out a request for address configuration information. 23
- 24. Special Addresses loopback it is represented as 0:0:0:0:0:0:0:1, abbreviated as ::1 24
- 26. Anycast Address Decimal Hex Description 127 7F Reserved Mobile IPv6 Home-Agents 126 7E anycast 0-125 00-7D Reserved Reserved Anycast IDs 26
- 27. Multicast Address 27
- 28. IPv6 addressing 28
- 29. Router Solicitation and Router Advertisement Hosts can request Router Advertisements by issuing a Router Solicitation. Router Advertisements will regular send prefix message out. 29
- 30. Router Advertisement M = 0, stateless autoconfiguratio n M = 1, stateful configuration (ip from DHCP) O = 1, get option setting from DHCP 30
- 31. Stateless autoconfiguration Global prefix Link-local prefix MAC address 2001:470:67:24::/64 fe80::/64 00:48:54:5b:cb:9d 0248:54ff:fe5b:cb9d 2001:470:67:24: 248:54ff:fe5b:cb9d/64 fe80:: 248:54ff:fe5b:cb9d/64 31
- 32. Stateful autoconfiguration IPv6 address get from DHCP, just same as IPv4. 32
- 33. Build up IPv6 environment 33
- 34. Router mode eth2 eth0 IPv6 service How to build up IPv6 environment by linux(ubuntu)) 34
- 35. Host mode Direct connection stateless mode stateful mode IPv6 tunnel broker service connect pppoe install gogoclient and enjoy service. 35
- 36. Thanks a lot 36