IPv6 Mobility

Introduction

Inconvenients of IPv4

Internet Protocol vesion 6

Conclusion

Hirearchical Mobile Internet Protocol vesion 6

Outline

Introduction:

1

Today the number of devices using IP address

has increased exponentially.

Most of these devices are mobile (phones,

cars, PDAs, sensors…)

Problematic:• Have an address and Keep contact• Be reachable• Maintain communication while moving.

Inconvenients of IPv4InsuffieciencyIncreasing routing informationIncreasing the number of Network Address Translation (NAT)Security issues

Percentage of IPv4USAEUROPEASIAOthers

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Internet Protocol version 6

What is IPv6 ?

IPv6: The next generation IP protocol, is backward compatible with and is designed to fix the shortcomings of IPv4, such as data security and maximum number of user addresses.

IPv6 increases the address space from 32 to 128 bits

IPv4= 4 billion addresses. IPv6= over 340 trillion addresses.

IPv6 = Internet Protocol Version 6

IPv4 @ = 32 bits

IPv6@ = 128 bits

What’s IPv6

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IPv6Overcome the

limitations of IPv4

Remove the need for Network

Address Translation (NAT)

Adapted for:auto-

configuration and

Mobile devices

Security & QosReduce the size of routing tables

Larger address space

IPv6 Better!

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IP address space from 32 bits to 128 bits. The new 128-bit IPv6 addresses are represented in the form of eight 16 bit components divided in columns:

X : X : X : X : X : X : X : X

IPv6 address components

Architecture:

IPv6 address is made of two parts: Prefix & Suffix

64 bits Prefix 64 bits suffix

IPv6 Address Components

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IPv6 PacketIPv6 Packet

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Mobile Internet Protocol Version 6

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Definition of Mobile IPv6:

MIPv6: Mobile IPv6 is a protocol developed as a subset of Internet Protocol version 6 to support mobile connections.

Mobile IPv6 (MIPv6) specifies routing support which permits an IPv6 host to continue using its home address as it moves around the Internet, enabling continuity of sessions.

Definition of MIPv6

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MIPv6 properties:

IPv6 Mobility is based on :

Experience in MIPv4;New features of IPv6;The advisability of deploying a new version of IP;

MIPv6 enables support communications with a mobile device by making a routing :

To the point of attachment of the mobile on the Internet;

To the mobile device’s address in the subnet network.

MIPv6 Properties

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MIPV6 PacketMIPv6 Packet

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Home Agent (HA): A router or a node located on the home Network that acts on behalf of the mobile node while away from the home Network.

Mobile Node (MN): A node that changes its location within the Internet topology. A node’s mobility could be a result of physical movement or of changes within the topology.

Correspondent Node (CN): Any node that communicates with the mobile node.

CN

HA

MN

Mobile IPv6 Terminology:MIPv6 Terminology

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HAMN

Visited Network

Home Network

CN

IPv6

Example of MIPv6 communication scenario:Exemple of MIPv6 Communication Scenario

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Visited Network

Home Network

Home Address

Binding

CacheMN

RouterSolicitati

on

New Network

Prefix

Care-of- Address

Updated

Care-of-Address +

Mobile Node’s authentication

HA

Updated

MN’s @

CNBindin

g Updat

e

Route Optimization

IPv6

Example of MIPv6 communication scenario:Exemple of MIPv6 Communication Scenario

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Limits of MIPv6

MIPv6 is inefficient when the mobile device changes often the anchor point within the same area.

=>The solution is the Hierarchical Mobile IPv6

Limits of MIPv6

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Hierarchical Mobile IPv6

Reduce the exchange messages between the mobile device and home agent.

=> new Entity Mobility Anchor Point

=> 2 temporary address * For the local area(subnet). * For the region.

Hierarchical MIPv6

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• Mobile IPv6 & HMIPv6:• Adapted to the long tcp

connections (ftp...) & internet standard applications(web browsing, http ...)

• Cannot be reliable to real time applications

Limits of MIPv6

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CONCLUSION

Today Mobile devices play major role in the growth of Internet.

Internet Doubles Every Year.IPv6 starts to be mature enough to

be deployed commercially.IPv6 will be the enabling technology

for the mobile Internet.

Conclusion

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Thank you for your attention