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L2 changes


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L2 changes

  1. 1. IPv6 Address Structure
  2. 2. • :: can be used once to represent a string of zeroes
  3. 3. • From Zytrax: link IPv6 10
  4. 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. 5. Examples
  6. 6. Multiple Addresses• Note: Interfaces normally have two addresses, or even more – Link-local FE80::w.x.y.z – Global unicast
  7. 7. • Used by Ethernet
  8. 8. ExampleInterface MAC 00-40-63-ca-9a-20IPv6 Interface ID (EUI-64) ::0040:63FF:FECA:9A20or ::40:63FF:FECA:9A20link local FE80::40:63FF:FECA:9A20
  9. 9. IPv4 and IPv6 Header Comparison IPv4 Header IPv6 Header Type ofVersion IHL Total Length Traffic Service Version Flow Label Class FragmentIdentification Flags Offset NextTime to Live Protocol Header Checksum Payload Length Hop Limit HeaderSource AddressDestination AddressOptions Padding Source Address Field’s Name Kept from IPv4 to IPv6Legend Fields Not Kept in IPv6 Name and Position Changed in IPv6 Destination Address New Field in IPv6
  10. 10. AAAA Records in DNS• and work too
  11. 11. • In CNIT 202E - Link IPv6 1
  12. 12. IPv6 Address Types
  13. 13. IPv6 Address Types
  14. 14. IPv6 Address Types• From ICANN (Link L2a)
  15. 15. 90% of this talk is stolen• I got it here – CNIT 202E, link IPv6 8