IP version 6

CE-143

CNE-0802

Background

IPv4’s addresses is only 232

IPv4 has minimum security mechanism IPv4 has no Quality of Service IPv4 did not support IP roaming

Advantage of IPv6 over IPv4

IPv6 has 2128 address space IPv6 simplify the header easier for router

to process IPv6 has more security features IPv6 has quality of service

IPv6 Addressing Scheme

16 bytes address Written in 8 group of four hexadecimal

notation separated by colon– 8000:0000:0000:0000:0123:4567:89AB:CDEF

First Leading Zero can be ommited– 8000::0123:4567:89AB:CDEF

IPv4 can be noted as– ::192.168.0.1

IPv4 vs IPv6 Header

Addressing

Global Unicast Address

IPv6 Address Allocation

Addressing Example

IPv4 and IPv6 Internetworking

many ways to do internetworking, 2 of them are:– Tunnel IPv6 in IPv4 network– Address translation

Tunneling IPv6 in IPv4

`

IPv6 Network

IPv6 Network

IPv4 Network

PacketIPv6

HeaderPacket

IPv6 Header

IPv4 Header

PacketIPv6

Header

Address Translation

`

IPv6 Network

IPv6 Network

IPv4 Network

PacketIPv6

Header

PacketIPv4

Header

PacketIPv6

Header

IPv4 Network

PacketIPv4

Header

PacketIPv4

Header