l2 changes

30
IPv6 Address Structure

Upload: emerdj

Post on 02-Jul-2015

150 views

Category:

Technology


1 download

TRANSCRIPT

Page 1: L2 changes

IPv6 Address Structure

Page 2: L2 changes
Page 3: L2 changes

• :: can be used once to represent a string of zeroes

Page 4: L2 changes

• From Zytrax: link IPv6 10

Page 5: L2 changes

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:

Page 6: L2 changes

Examples

Page 7: L2 changes
Page 8: L2 changes
Page 9: L2 changes
Page 10: L2 changes
Page 11: L2 changes

Multiple Addresses

• Note: Interfaces normally have two addresses, or even more– Link-local FE80::w.x.y.z

– Global unicast

Page 12: L2 changes

• Used by Ethernet

Page 13: L2 changes

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

Page 14: L2 changes

IPv4 and IPv6 Header Comparison

Fragment Offset

Flags

Total LengthType of Service

IHL

PaddingOptions

Destination Address

Source Address

Header ChecksumProtocolTime to Live

Identification

Version

IPv4 Header

Next Header

Hop Limit

Flow LabelTraffic Class

Destination Address

Source Address

Payload Length

Version

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

Leg

end

Page 15: L2 changes
Page 16: L2 changes
Page 17: L2 changes
Page 18: L2 changes
Page 19: L2 changes
Page 20: L2 changes
Page 21: L2 changes
Page 22: L2 changes
Page 23: L2 changes

AAAA Records in DNS

• iana.org and ipv6.net work too

Page 24: L2 changes
Page 25: L2 changes
Page 26: L2 changes

• In CNIT 202E - Link IPv6 1

Page 27: L2 changes

IPv6 Address Types

Page 28: L2 changes

IPv6 Address Types

Page 29: L2 changes

IPv6 Address Types

• From ICANN (Link L2a)

Page 30: L2 changes

90% of this talk is stolen

• I got it here– CNIT 202E, link IPv6 8