Iccsit 2010 p_1


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Iccsit 2010 p_1

  1. 1. 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 .
  2. 2. Presentation Outline: 1 . Objective of the Paper . 2 .Introduction to the Problem. 3 . Proposed Methodology. 4 . Results . 5 . Conclusions . 6 . References .
  3. 3. 1 . Objective of the Paper <ul><li>This method describes a new transition of IPv4/IPv6 methodology for BD-SIIT Translation technique using Forward and Feedback operations algorithm . </li></ul><ul><li>BD-SIIT reduces the: </li></ul><ul><li>To Reduce the Packet size compared with Tunneling Algorithms, in turn, reducing Traffic overhead . </li></ul>
  4. 4. <ul><li>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 . </li></ul><ul><li>Use a New address mapping that depends on identifying two Public addresses(IPv4 and IPv6) instead of IPv4 mapped IPv6 address method. </li></ul>
  5. 5. Presentation Outline: 1.Objective of the Paper . 2 .Introduction to the Problem. 3.Proposed Methodology. 5.Results. 6.Conclusions. 7.References .
  6. 6. 2.Introduction to the Problem . <ul><li>As we Know that IPv4 and IPv6 are incompatible Protocols. </li></ul><ul><li>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 . </li></ul>
  7. 7. 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 .
  8. 8. Why we need IPv6 Transition: <ul><li>IPv6 transition is a process of gradually replacing IPv4 with IPv6 in the Internet. </li></ul><ul><li>Transition is a process by which the existing services should work in the new environment but also to continue to work with IPv4 nodes. </li></ul><ul><li>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 . </li></ul>
  9. 9. <ul><li>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. </li></ul><ul><li>The deployment of this new protocol brings set of new challenges to the application developers and application service providers. </li></ul>
  10. 10. <ul><li>The transition between today’s IPv4 Internet and the future IPv6 based one will be a long process during which protocol versions will coexist . </li></ul><ul><li>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. </li></ul>
  11. 11. 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 .
  12. 12. <ul><li>The Transition of IPv4/IPv6 based on sockets . </li></ul>
  13. 13. Difficulties in Implementing IPv6 Transition .
  14. 14. Presentation Outline: 1 . Objective of the Paper . 2.Limitations of IPv4 . 3.Introduction to IPv6. 4.Proposed Methodology . 5.Results. 6.Conclusions. 7.References .
  15. 15. 1.Limited Address Space <ul><li>IPv4 has 32 bit addresses. </li></ul><ul><li>Flat addressing (only netid + hostid with “fixed” boundaries) </li></ul><ul><li>Results in inefficient use of address space. </li></ul><ul><li>Class B addresses are almost over. </li></ul><ul><li>Addresses will exhaust in the next 5 years. </li></ul><ul><li>IPv4 is victim of its own success . </li></ul>
  16. 16. Problems with IPv4: Routing Table Explosion <ul><li>IP does not permit route aggregation (limited super netting possible with new routers) </li></ul><ul><li>Mostly only class C addresses remain </li></ul><ul><li>Number of networks is increasing very fast (number of routes to be advertised goes up) </li></ul><ul><li>Very high routing overhead </li></ul><ul><ul><li>lot more memory needed for routing table </li></ul></ul><ul><ul><li>lot more bandwidth to pass routing information </li></ul></ul><ul><ul><li>lot more processing needed to compute routes </li></ul></ul>
  17. 17. Problems with IPv4 : Header Limitations . <ul><li>Maximum header length is 60 octets. (Restricts options) </li></ul><ul><li>Maximum packet length is 64K octets. (Do we need more than that ?) </li></ul><ul><li>ID for fragments is 16 bits. Repeats every 65537th packet. (Will two packets in the network have same ID?) </li></ul><ul><li>Variable size header. (Slower processing at routers.) </li></ul><ul><li>No ordering of options. (All routers need to look at all options.) </li></ul>
  18. 18. Problems with IPv4 : Other Limitations . <ul><li>Lack of quality-of-service support. </li></ul><ul><ul><li>Only an 8-bit ToS field, which is hardly used. </li></ul></ul><ul><ul><li>Problem for multimedia services. </li></ul></ul><ul><li>No support for security at IP layer. </li></ul><ul><li>Mobility support is limited. </li></ul>
  19. 19. 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 .
  20. 20. IPv6 Address Figure-1
  21. 21. IPv6:Distinctive Features <ul><li>Larger address space. </li></ul><ul><li>Header format simplification </li></ul><ul><li>Expanded routing and addressing capabilities </li></ul><ul><li>Improved support for extensions and options </li></ul><ul><li>Flow labeling (for QoS) capability </li></ul><ul><li>Auto-configuration and Neighbor discovery </li></ul><ul><li>Authentication and privacy capabilities </li></ul><ul><li>Simple transition from IPv4. </li></ul><ul><li>Encryption and Decryption . </li></ul><ul><li>Real time applications like Video & Audio . </li></ul>
  22. 22. IPv6 Header Format Traffic Class Flow Label Vers Payload Length Next Header Hop Limit Source Address Destination Address 0 4 12 16 24 31
  23. 23. 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 .