Presentation on theme: "IPv6-The Next Generation Protocol RAMYA MEKALA UIN:01008672."— Presentation transcript:
IPv6-The Next Generation Protocol RAMYA MEKALA UIN:01008672
What is IPv6 Also known as IPng (next generation) A new version of the Internet Protocol, which is primarily designed to extend address space. It is a Network layer protocol used for packet-switched internetworking and provides end-to-end datagram transmission across multiple IP networks.
Difference between IPv4 and IPv6 Expanded address space Header Format Simplification IPv6 header is twice as long (40 bytes) as IPv4 header without options (20bytes) No checksum at the IP network layer No hop-by-hop segmentation 64 bits aligned Authentication and Privacy Capabilities No more broadcast, only Multicasting Mobility Privacy
IPv6 Addressing Three types Unicast Packet delivered to a single interface. Any cast Packet delivered to the nearest of a set of interfaces. Multicast Packet delivered to all interfaces in a set.
IPv6 Addressing Scope 64 bits reserved for the interface ID 16 bits reserved for the end site 16 bits reserved for each service provider 29 bits reserved for all service providers
Migration to IPV6 The current IP-based network will gradually migrate from IPv4 to IPv6. Signaling interworking will need to be supported between the IPv6 network and the existing IPv4 network. Mapping of signaling between IPv6 and IPv4 is required. There are several migration mechanisms from the IPv4 protocol to IPv6 protocol. The following are the most discussed techniques: -Dual stack:to allow IPv4 and IPv6 to coexist in the same devices and networks. -Tunneling: to avoid order dependencies when upgrading hosts, routers or regions. - Translation: to allow IPv6 only devices to communicate with IPv4 only devices.
Dual Stack Technique In this method it is proposed to implement two protocols stacks in the same device. The protocol stack used for each link depends on the device used at the other end of the link.
Translation Techniques This technique uses a device, the NATPT (Network Address Translation – Protocol Translation) that translates in both directions between IPv4 and IPv6 at the boundary between an IPv4 network and an IPv6 network.
Benefits of IPv6 Improved efficiency in routing and packet handling. Support for auto configuration and plug and play. Support for embedded IPSec. Enhanced support for Mobile IP and mobile computing devices. Elimination of the need for network address translation (NAT). Support for widely deployed routing protocols. Aside from the increased address space,IPv6 offers a number of other key design improvements over IPv4.
References Computer Networking a top down approach 6 th edition kurose,Ross. http://en.wikipedia.org/wiki/IPv6 http://en.wikipedia.org/wiki/IPv6 http://ipv6.com/articles/general/ipv6-the-next-generation-internet.htm http://ipv6.com/articles/general/ipv6-the-next-generation-internet.htm