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IPv6 Address Structure

IPv6 Address Structure. Last modified 9-19-12. :: can be used once to represent a string of zeroes. From Zytrax: link IPv6 10. IPv6 - IPv4 Addresses.

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IPv6 Address Structure

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  1. IPv6 Address Structure Last modified 9-19-12

  2. :: can be used once to represent a string of zeroes

  3. From Zytrax: link IPv6 10

  4. IPv6 - IPv4 Addresses • A hybrid format may be used when dealing with IPv6 - IPv4 addresses where the normal IPv4 dotted decimal notation may be used after the first 6, 16 bit address elements:

  5. Examples

  6. Broadcast is gone, not used in IPv6

  7. Multiple Addresses • Note: Interfaces normally have two addresses, or even more • Link-local FE80::w.x.y.z • Global unicast

  8. Used by Ethernet

  9. Example Interface MAC 00-40-63-ca-9a-20 IPv6 Interface ID (EUI-64) ::0040:63FF:FECA:9A20 or ::40:63FF:FECA:9A20 link local FE80::40:63FF:FECA:9A20

  10. iClicker Questions

  11. Which of these is an invalid IPv6 address? • 1:2:3:4:5:6:7:8 • aaaa:bbbb:cccc:dddd:eeee:ffff:: • :: • ::1 • fe80::2000::1

  12. Which of these is an invalid IPv6 address? • 1000:0010:0111:1100:1111:1101:1000:0101 • 192:168:299::1 • 12ab:254d:324g:127f:dd23:f1ab:01fe:ffff • 1:: • 2001:5c0:0:0:0:0:147.144.1.212

  13. What is the IPv6 Loopback Address? • 0000:0000:0000:0000:0000:0000:0000:0000 • 0000:0000:0000:0000:0000:0000:0000:0001 • 0001:0001:0001:0001:0001:0001:0001:0001 • ffff: ffff: ffff: ffff: ffff: ffff: ffff: ffff • ::127:0:0:1

  14. How many different global routing prefixes are there? • 128 • 2^128 • 10^45 • 2^45 • Something else

  15. Each company will be assigned a /48 address block. How many /64 subnets does that allocation contain? • 16 • 256 • 65,536 • 4 billion • 2^64

  16. Version IHL Type of Service Total Length Version Traffic Class Flow Label Identification Flags Fragment Offset Payload Length Next Header Hop Limit Time to Live Protocol Header Checksum Source Address Source Address Destination Address Options Padding Destination Address IPv4 and IPv6 Header Comparison IPv4 Header IPv6 Header Field’s Name Kept from IPv4 to IPv6 Fields Not Kept in IPv6 Name and Position Changed in IPv6 New Field in IPv6 Legend

  17. AAAA Records in DNS • iana.org and ipv6.net work too

  18. In CNIT 202E - Link IPv6 1

  19. IPv6 Address Types

  20. IPv6 Address Types

  21. IPv6 Address Types • From ICANN (Link L2a)

  22. 90% of this talk is stolen • I got it here • CNIT 202E, link IPv6 8

  23. iClicker Questions

  24. Which header field is present in IPv4, but not in IPv6? • Header checksum • TTL • Source address • Traffic class • Flow label

  25. Which protocol is not included in IPv6? • ICMP • ARP • SLAAC • DAD • DNS

  26. Which type of addressing is used in IPv4 but not in IPv6? • Unicast • Multicast • Anycast • Broadcast • Telecast

  27. Binary Games

  28. How far are you in the certification process? • I haven't started yet • I got my Gogo6 tunnel working • I got my Web server working • I got the email working • I got past the email server test

  29. What is the largest Link-Local Unicast IPv6 Address? fe80:ffff:ffff:ffff:ffff:ffff:ffff:ffff fe8f:ffff:ffff:ffff:ffff:ffff:ffff:ffff febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff fecf:ffff:ffff:ffff:ffff:ffff:ffff:ffff ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

  30. What is the largest Unique Local IPv6 Address? fc00:ffff:ffff:ffff:ffff:ffff:ffff:ffff fcff:ffff:ffff:ffff:ffff:ffff:ffff:ffff fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff feff:ffff:ffff:ffff:ffff:ffff:ffff:ffff ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

  31. What is the largest IPv6 Address assigned to Regional Internet Registries? 2000:ffff:ffff:ffff:ffff:ffff:ffff:ffff 2fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 7fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

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