This document contains an agenda and presentation materials for a talk on IPv6. The key points covered include: - Limitations of IPv4 like limited address space and large routing tables - IPv6 addresses how it uses 128-bit addresses to vastly increase available addresses - Transition technologies for moving from IPv4 to IPv6 like tunneling - How to summarize and write IPv6 addresses - Types of IPv6 addresses like link-local, global and multicast - IPv6 implementation in Windows Vista

1. WELCOME DELHI IT PROShttp://groups.msn.com/itdelhiug

2. Agenda – Delhi IT Community Event Jan 09

3. Get Ready for IPv6?Ranjana JainIT Pro EvangelistMicrosoft IndiaMCSE, MCT, RHCE, CISSP, CIW Security AnalystBlog: http://ranjanajain.spaces.live.com

4. IPv4 LimitationsIPv6 Changes in AddressingFuture IPv6 SolutionsIPv6 with Windows VistaWhat Will We cover?

5. TCP/IPIPv4 AddressingSubnettingLevel 200Helpful Experience

6. Introducing IPv6Addressing with IPv6Transitioning to IPv6Exploring IPv6 ScenariosAgenda

7. The Microsoft Networks VisionIPsec isolationLabGuest

8. The Microsoft Networks Vision - NotesIPsec isolationLabGuest

9. Shortcomings of IPV4Exponential Internet Growth – Exhaustion on Address SpaceSecurity at the Internet LayerInternet Backbone Routers with Large Routing Tables

10. Shortcomings of IPV4 - NotesExponential Internet Growth – Exhaustion on Address SpaceSecurity at the Internet LayerInternet Backbone Routers with Large Routing Tables

11. Internet Hosts Growth (1992-2006)In millionshttp://www.isc.org/index.pl?/ops/ds/host-count-history.php

12. IPv6 as a Global Solution

13. What about NAT?NAT Enabled RouterInternetWith IPv6

14. Introducing IPv6Addressing with IPv6Transitioning to IPv6Exploring IPv6 ScenariosAgenda

15. Increased Address SpaceIPv4 provides 232 addresses, which =4,294,967,296(That’s 4 billion)IPv6 provides 2128 addresses, which = 340,282,366,920,938,463,463,374,607,431,768,211,456(That’s 3.40*1038, or 340 undecillion addresses)

16. HeaderIPv4IPv6

17. Header - NotesIPv4IPv6

18. AnycastLink LocalSite Local

19. Types of IPv6 AddressesLink Local AddressesSite Local Addresses10 bits64 bits54 bits10 bits64 bits54 bitsGlobal Addresses1111 1110 10Interface ID000 . . . 0001111 1110 11Interface IDSubnet ID64 bits45 bits16 bitsInterface IDSubnet ID001Global Routing Prefix

20. Unique Local Addresses7 bits40 bits64 bits16 bits1111 110Interface IDGlobal IDSubnet IDL

21. Special IPV6 Addresses

22. Types of IPv6 Addresses - NotesLocal Link AddressesUnique Local Addresses10 bits64 bits54 bitsGlobal Addresses7 bits40 bits64 bits16 bits1111 1110 10Interface ID000 . . . 00064 bits45 bits16 bitsInterface IDSubnet ID001Global Routing Prefix1111 110Interface IDGlobal IDSubnet IDL

23. IPv6 Address SyntaxIPv6 address in binary formDivided along 16-bit boundariesEach 16-bit block is converted to hexadecimal and delimited with colonsSuppress leading zeros within each blockCompress zero blocks0010000111011010000000001101001100000000000000000010111100111011 000000101010101000000000111111111111111000101000100111000101101021DA:00D3:0000:2F3B:02AA:00FF:FE28:9C5A21DA:D3:0:2F3B:2AA:FF:FE28:9C5A0010000111011010 0000000011010011 0000000000000000 0010111100111011 0000001010101010 0000000011111111 1111111000101000 10011100010110102AA:FF:FE28:9C5A21DA:D3::2F3B:Network IDInterface ID

24. IPv6 Address Syntax - NotesIPv6 address in binary formDivided along 16-bit boundariesEach 16-bit block is converted to hexadecimal and delimited with colonsSuppress leading zeros within each blockCompress zero blocks0010000111011010000000001101001100000000000000000010111100111011 000000101010101000000000111111111111111000101000100111000101101021DA:00D3:0000:2F3B:02AA:00FF:FE28:9C5A21DA:D3:0:2F3B:2AA:FF:FE28:9C5A0010000111011010 0000000011010011 0000000000000000 0010111100111011 0000001010101010 0000000011111111 1111111000101000 10011100010110102AA:FF:FE28:9C5A21DA:D3::2F3B:Network IDInterface ID

25. Compatibility AddressesIPv4-compatible Address0:0:0:0:0:0:w.x.y.z or ::w.x.y.zUsed by IPv6/IPv4 nodes communicating using IPv6IPv6 packet encapsulated with IPv4 header and sent using IPv4 infrastructureIPv4-mapped address0:0:0:0:0:FFFF:w.x.y.z or ::FFFF:w.x.y.zIPv4 only node to IPv6 nodeUsed only for internal representation6to4 addressUsed by nodes with both IPv4 and IPv6 over IPv4 routing infrastructureFormed by combining 2002::/16 with 32 bit IPv4 address making a 48-bit prefixTunneling technique defined in RFC 3056

26. Multicast IPv6 AddressesIPv6 Multicast Addresses8 bits4 bits112 bits1111 1111Group IDFlagsScope4 bits

27. Subnetting IPv664 bits - HostSubnetNetworkNetworks and Hosts from the same 32-bit poolMore networks (255.255.255.0)More hosts (255.0.0.0)32 bits - fixedIPv4 Subnet Mask64 bits dedicated to hosts64 bits dedicated to networks/1/32/48IPv6 Address

28. Introducing IPv6Addressing with IPv6Transitioning to IPv6Exploring IPv6 ScenariosAgenda

29. Transition TechnologiesApplication LayerTransport Layer (TCP/UDPIPv6IPv4AAAA QueryA QueryA QueryNetwork Interface LayerNo Global IPv6 AddressAt Least 1 Global IPv6 AddressDNS Server

30. Transition Technologies - NotesApplication LayerTransport Layer (TCP/UDPIPv6IPv4AAAA QueryA QueryA QueryNetwork Interface LayerNo Global IPv6 AddressAt Least 1 Global IPv6 AddressDNS Server

31. IPv6 over IPv4 TunnelingRouter to RouterHost-to-Router or Router-to-HostIPv4 or IPv6 InfrastructureIPv4 InfrastructureNode ANode BIPv4 InfrastructureIPv4 or IPv6 InfrastructureNode BIPv6 over IPv4 tunnelIPv4 or IPv6 InfrastructureNode AHost-to-HostIPv4 InfrastructureNode BIPv6 over IPv4 tunnelNode AIPv6/IPv4 RouterIPv6/IPv4 RouterIPv6/IPv4IPv6IPv6/IPv4 RouterIPv6 over IPv4 tunnelIPv6IPv6/IPv4IPv6IPv6/IPv4

32. IPv6 over IPv4 TunnelingRouter to RouterHost-to-Router or Router-to-HostIPv4 or IPv6 InfrastructureIPv4 InfrastructureNode ANode BIPv4 InfrastructureIPv4 or IPv6 InfrastructureNode BIPv6 over IPv4 tunnelIPv4 or IPv6 InfrastructureNode AHost-to-HostIPv4 InfrastructureNode BIPv6 over IPv4 tunnelNode AIPv6/IPv4 RouterIPv6/IPv4 RouterIPv6/IPv4IPv6IPv6/IPv4 RouterIPv6 over IPv4 tunnelIPv6IPv6/IPv4IPv6IPv6/IPv4