Comparison and Contrast between IPv4–to-IPv6 Forward Address Mapping Algorithm with IPv6-to-IPv4 Feedback Address Mapping Algorithm in BD-SIIT IPv4/IPv6 Translation Mechanism.

Under the Supervision of: Dr.Manjaiah.D.H.

Associate Professor and Chairman,Dept

of CS, Mangalore University,Mangalore.

Research Candidate : Hanumanthappa.J.

Senior Asst.Professor,DoS in CS,UoM,MGM,Mysore-06.

Presentation Outline:1.Objective of the Paper.

2.Introduction to the Problem.

3.Proposed Methodology.

4.Results.

5.Conclusions.

6.References.

1.Objective of the Paper This method describes a new transition of IPv4/IPv6 methodology for BD-SIIT Translation technique using Forward and Feedback operations algorithm. BD-SIIT reduces the:To Reduce the Packet size compared with Tunneling Algorithms, in turn, reducing Traffic overhead.

To reduce the cost of IPv6 Network by avoiding the need to upgrade all the edge nodes that support both the IPv4 and IPv6 as found in Dual Stack mechanisms.

Use a New address mapping that depends on identifying two Public addresses(IPv4 and IPv6) instead of IPv4 mapped IPv6 address method.

Presentation Outline:1.Objective of the Paper.2.Introduction to the Problem.3.Proposed Methodology.5.Results.6.Conclusions.7.References.

2.Introduction to the Problem.

As we Know that IPv4 and IPv6 are incompatible Protocols.Bi-Directional Stateless Internet Protocol/Internet control messaging Protocol Translation BD-SIIT IS CURRENTLY ONE OF THE MOST ACTIVE RESEARCH TOPIC IN Transition to IPv6.

IPv6 Transition includes Dual Stack,

Translation and Tunneling Issues.

Dual Stack Header Translation IPv6 Tunneling 1.Automatic Tunneling.

2.GRE Tunneling. 3.Manually Configured Tunneling.

Why we need IPv6 Transition:IPv6 transition is a process of gradually replacing IPv4 with IPv6 in the Internet.Transition is a process by which the existing services should work in the new environment but also to continue to work with IPv4 nodes.An IPv6 transition mechanism is a method to connect the hosts/networks using the same or different IP protocols under some specific IPv6 transition environment.

Deploying IPv6 may seem a complex and expensive operation, however careful planning and choosing the right techniques actually make the transition to IPv6 smooth and easy.The deployment of this new protocol brings set of new challenges to the application developers and application service providers.

The transition between today’s IPv4 Internet and the future IPv6 based one will be a long process during which protocol versions will coexist.Therefore, new applications should be designed to work in all environments:single IPv4,single IPv6 or mixed environment connecting IPv6 with IPv4 nodes.That is,dual protocol stack is necessary.

APPLICATIONS OF IPV6 TRANSITION.1.Peer-to-Peer based IPv4/IPv6 transition method.2.High performance Networking.3.The multi-homing transition of IPv4/IPv6 for any cast and multicast addresses.4.The transition of IPv4/IPv6 based on BDIPS(Bi-Directional intelligent Processing System) that deals with address mapping transition from IPv4 to IPv6 for any cast, multicast, unicast addresses.

The Transition of IPv4/IPv6 based on sockets.

Difficulties in Implementing IPv6 Transition.

Presentation Outline:1.Objective of the Paper.

2.Limitations of IPv4.

3.Introduction to IPv6.

4.Proposed Methodology.

5.Results.

6.Conclusions.

7.References.

1.Limited Address SpaceIPv4 has 32 bit addresses.Flat addressing (only netid + hostid with “fixed” boundaries)Results in inefficient use of address space.Class B addresses are almost over.Addresses will exhaust in the next 5 years.IPv4 is victim of its own success.

Problems with IPv4: Routing Table Explosion IP does not permit route aggregation (limited super netting possible with new

routers) Mostly only class C addresses remain Number of networks is increasing very fast (number of routes to be advertised

goes up) Very high routing overhead

lot more memory needed for routing table lot more bandwidth to pass routing information lot more processing needed to compute routes

Problems with IPv4 : Header Limitations.

Maximum header length is 60 octets. (Restricts options) Maximum packet length is 64K octets. (Do we need more than that ?) ID for fragments is 16 bits. Repeats every 65537th packet. (Will two packets in

the network have same ID?) Variable size header. (Slower processing at routers.) No ordering of options. (All routers need to look at all options.)

Problems with IPv4 : Other Limitations. Lack of quality-of-service support.

Only an 8-bit ToS field, which is hardly used. Problem for multimedia services.

No support for security at IP layer. Mobility support is limited.

Presentation Outline:1.Objective of the Paper.

2.Limitations of IPv4.

3.Introduction to IPv6.

-IPv6 Distinctive Features.

4.Proposed Methodology.

5.Results.

6.Conclusions.

7.References.

IPv6 AddressIPv6 Address

Figure-1

IPv6:Distinctive Features Larger address space. Header format simplification Expanded routing and addressing capabilities Improved support for extensions and options Flow labeling (for QoS) capability Auto-configuration and Neighbor discovery Authentication and privacy capabilities Simple transition from IPv4. Encryption and Decryption. Real time applications like Video & Audio.

IPv6 Header Format

Traffic Class Flow LabelVers

Payload Length Next Header Hop Limit

Source Address

Destination Address

0 4 12 16 24 31

Presentation Outline:1.Objective of the Paper.

2.Introduction to the Problem.

2.Limitations of IPv4.

3.Introduction to IPv6.

-IPv6 Distinctive Features.

4.Proposed Methodology.

5.Results.

6.Conclusions.

7.References.

PROPOSED METHODOLOGY.BD-SIIT TRANSITION ALGORITHM STEPS