TCP/IP Protocol Suite 1 Chapter 27 Upon completion you will be able to: Next Generation: IPv6 Understand the shortcomings of IPv4 Know the IPv6 address.

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TCP/IP Protocol Suite 1 Chapter 27 Upon completion you will be able to: Next Generation: IPv6 Understand the shortcomings of IPv4 Know the IPv6 address format, address types, and abbreviations Be familiar with the IPv6 header format Know the extension header types Objectives

TCP/IP Protocol Suite IPv6 IPv6 has these advantages over IPv4: 1. larger address space 2. better header format 3. new options 4. allowance for extension 5. support for resource allocation 6. support for more security The topics discussed in this section include: IPv6 Addresses Address Space Assignment Packet Format Comparison between IPv4 and IPv6

TCP/IP Protocol Suite 3 Figure 27.1 IPv6 address

TCP/IP Protocol Suite 4 Figure 27.2 Abbreviated address

TCP/IP Protocol Suite 5 Figure 27.3 Abbreviated address with consecutive zeros

TCP/IP Protocol Suite 6 Figure 27.4 CIDR address

TCP/IP Protocol Suite 7 Figure 27.5 Address structure

TCP/IP Protocol Suite 8 Table 27.1 Type prefixes for IPv6 addresses

TCP/IP Protocol Suite 9 Figure 27.6 Provider-based address

TCP/IP Protocol Suite 10 Figure 27.7 Address hierarchy

TCP/IP Protocol Suite 11 Figure 27.8 Unspecified address

TCP/IP Protocol Suite 12 Figure 27.9 Loopback address

TCP/IP Protocol Suite 13 Figure Compatible address

TCP/IP Protocol Suite 14 Figure Mapped address

TCP/IP Protocol Suite 15 Figure Link local address

TCP/IP Protocol Suite 16 Figure Site local address

TCP/IP Protocol Suite 17 Figure Multicast address

TCP/IP Protocol Suite 18 Figure IPv6 datagram

TCP/IP Protocol Suite 19 Figure Format of an IPv6 datagram

TCP/IP Protocol Suite 20 Table 27.2 Next header codes

TCP/IP Protocol Suite 21 Table 27.3 Priorities for congestion-controlled traffic

TCP/IP Protocol Suite 22 Table 27.4 Priorities for noncongestion-controlled traffic

TCP/IP Protocol Suite 23 Table 27.5 Comparison between IPv4 and IPv6 packet header

TCP/IP Protocol Suite 24 Figure Extension header format

TCP/IP Protocol Suite 25 Figure Extension header types

TCP/IP Protocol Suite 26 Figure Hop-by-hop option header format

TCP/IP Protocol Suite 27 Figure The format of options in a hop-by-hop option header

TCP/IP Protocol Suite 28 Figure Pad1

TCP/IP Protocol Suite 29 Figure PadN

TCP/IP Protocol Suite 30 Figure Jumbo payload

TCP/IP Protocol Suite 31 Figure Source routing

TCP/IP Protocol Suite 32 Figure Source routing example

TCP/IP Protocol Suite 33 Figure Fragmentation

TCP/IP Protocol Suite 34 Figure Authentication

TCP/IP Protocol Suite 35 Figure Calculation of authentication data

TCP/IP Protocol Suite 36 Figure Encrypted security payload

TCP/IP Protocol Suite 37 Figure Transport mode encryption

TCP/IP Protocol Suite 38 Figure Tunnel-mode encryption

TCP/IP Protocol Suite 39 Table 27.6 Comparison between IPv4 options and IPv6 extension headers

TCP/IP Protocol Suite TRANSITION FROM IPv4 TO IPv6 Three strategies have been devised by the IETF to provide for a smooth transition from IPv4 to IPv6. The topics discussed in this section include: Dual Stack Tunneling Header Translation

TCP/IP Protocol Suite 41 Figure Three transition strategies

TCP/IP Protocol Suite 42 Figure Dual stack

TCP/IP Protocol Suite 43 Figure Automatic tunneling

TCP/IP Protocol Suite 44 Figure Configured tunneling

TCP/IP Protocol Suite 45 Figure Header translation

TCP/IP Protocol Suite 46 Table 27.9 Header translation