Iccana 2011

04/08/23

Under the Supervision of: Dr.Manjaiah.D.H. Chairman and Associate Professor,Dept of CS,Mangalore University, Mangalore.

Research Candidate :

Hanumanthappa.J.

Senior Asst.Professor,

DoS in CS,UoM,MGM,Mysore-06.

Compare and Contrast between NAT-PT and BD-SIIT Translators in Transition of IPv4 to

IPv6.

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Presentation Outline.1. Objective of the paper.2. Introduction to the problem.3. Data sets used.4. Proposed Methodology.5. Results.6. Conclusions.7. References.04/08/23

Objective of the paper.This research work presents a new IPv4/IPv6

transition method based on the Comparison and Contrast between Stateless BD-SIIT and Stateful NAT-PT Translators in Transition of IPv4 to IPv6 new technology.

BD-SIIT and NAT-PT Translators are Powerful Translators in IPv4 to IPv6 Transition.

BD-SIIT Performance is really good as compared to NAT-PT Translator.

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Introduction to the Problem.

The concept of IPv4/IPv6 transitioning is one of the hot vigorous topic in IPv4/IPv6 Transition.

The transition between IPv4 and IPv6 internet will be a very long process as they are completely incompatible two protocols.

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Definition of IP.

An IP address is an Identifier that is applied to each device connected to an IP

network.

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IPv6 Benefits.• Larger address space.

• Expanded routing and addressing capabilities

• Improved support for extensions and options Flow labeling(QoS) capability Server-less Auto-configuration(Plug and Play),

Reconfiguration and Neighbor discovery(ND) Authentication and privacy capabilities.

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Simple transition from IPv4.Built in Strong IP-layer Encryption,Decryption and Authentication.Real time applications like Video & Audio.More efficient and Robust mobility mechanisms.Improved support for options and extensions.Streamed Header format simplification.

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IPv6 Header Format Traffic Class Flow LabelVers

Payload Length Next Header Hop Limit

Source Address

Destination Address

0 4 12 16 24 31

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Transition to IPv6: Design Goal

No “flag” day. Incremental upgrade and deployment. Minimum upgrade dependencies. Interoperability of IPv4 and IPv6 nodes. Let sites transition at their own pace. Basic migration tools

Dual stack and tunneling Translation

Transition Mechanisms:Dual Stack

New nodes support both IPv4 and IPv6. Upgrading from IPv4 to v4/v6 does not break anything. Same transport layer and application above both. Provides complete interoperability with IPv4 nodes.

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Figure-2:Dual Stack

Tunnel IPv6 packets across IPv4 topology.Configured tunnels:

Explicitly configured tunnel endpoints.Router to router , host to router.

Automatic tunnels:Automatic address resolution using embedded IPv4 address (like IPv4-compatible address).Host to host, router to host.

Figure-3: Automatic Tunneling Figure-4: Configured Tunneling

Translators in IPv6.•BD-SIIT Translators.

•NAT-PT Translators.

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Operation of BD-SIIT

V4-V6 DNS(DNS46) server determines two public IPv4 and IPv6 addresses which are statistically or dynamically exist for IPv4/IPv6 communication system.

V4-V6 Enabled Gateway which performs address mapping between IPv4 and IPv6 addresses as well as IPv4 and IPv6 header conversion.

Figure-6: BD-SIIT Translation Process.

Figure-7: Translation of IPv6 to IPv4 Header

Translation of IPv4 to IPv6 Header.

Why BD-SIIT Transition Mechanism

To reduce the packet size compared with Tunneling Algorithms, in turn, reducing traffic overhead.

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.

Figure-8: BD-SIIT Data packet Transmission Process

BD-SIIT Translation mainly occurs due to the following Stages

Stage 1: IPv6 Packet Transmission. Stage 2: IPv6-to-IPv4 mapping calculation and address mapping. Stage 3: IPv6-to-IPv4 Header Translation. Stage 4: IPv4 packet Transmission.

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