Download - I pv6
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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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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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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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