Mobile IPv6

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Mobile IPv6

• Kan ZhigangNokia Research Center
• Beijing, P.R.Chinahttp//graceken.home.chinaren.n
  etext-zhigang.kan_at_nokia.com

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New features of IPv6
Clues
Mobility supported

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Glances to IPv6
1. Routing and Addressing
2. Plug and Play
3. Bringing Security to the Internet
4. Real-time Support and Flows
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Outlines

• Introduction
• Comparison with Mobile IP for IPv4
• Terminology
• Overview of Mobile IPv6
• New IPv6 Destination Options and Message Types
• Modifications to IPv6 Neighbor Discovery
• Requirements for IPv6 Nodes
• Correspondent Node Operation
• Home Agent Operation
• Mobile Node Operation

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Why
1. Introduction

• Mobile computers are likely to account for a
  majority or at least a substantial fraction of
  the population of the Internet during the
  lifetime of IPv6.

Without it, packets destined to a mobile node
(host or router) would not be able to reach it
while the mobile node is away from its home
link.
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1. Introduction

• What

• Yes

• No

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1. Introduction - Building blocks for Mobiel IPv6
Macro Mobility
Base Protocol
Others
Micro Mobility
Others
Seamless Handover
Fast Handover
Smooth Hadover
Regional Reg
Head comp
Technique2
Technique3
Buffer Mang
Others
Technique1
Others
Others
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(1) Advantage
2. Comparison with Mobile IPv4
(2) Route Optimization
(3) Ingress filtering
(4) Multicast packets
(5) Foreign agents
(6) Security mechanisms
(7) Black hole
(8) IPv6 Routing header, Not Encapsulation
(9) Neighbor Discovery, Not ARP
(10) Dynamic home agent address discovery
mechanism
(11) Control traffic
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General Terms
3. Terminology

• IP interfacenode
  subnet prefixrouter
  interface identifier host
  link-layer addresslink
  packet

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Mobile IPv6 Terms summary
3. Terminology
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Mobile IPv6 Terms summary
3. Terminology

• 1. home address2. home subnet prefix
• 3. home link
• 4. mobile node
• 5. correspondent node
• 6. movement

7. foreign subnet prefix 8. foreign link 9.
home agent 10. care-of address 11. binding
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4.1. Basic Operation
4. Overview
4.2. 4 New IPv6 Destination Options
4.3. IPsec Requirements for New
Destination Options
4.4. 2 New IPv6 ICMP Messages
4.5. 3 Conceptual Data Structures
4.6. Binding Management
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.1. Basic Operation
4. Overview
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4.2. New IPv6 Destination Options
4. Overview

• 1. Binding Update

2. Binding Acknowledgement
3. Binding Request
4. Home Address
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4.4. New IPv6 ICMP Messages
4. Overview

• 1. Home Agent Address Discovery Request 2. Home
  Agent Address Discovery Reply

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4.5. Conceptual Data Structures
4. Overview

• Binding Cache
• Binding Update List
• Home Agents List

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4.6. Binding Management
4. Overview

• 1. Mobile node Home agent

2. Mobile node Correspondent node
3. Multiple care-of address
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5.1. Binding Update Option 5.2. Binding
Acknowledgement Option5.3. Binding Request
Option5.4. Home Address Option5.5. Mobile
IPv6 Destination Option Sub-Options
5. Four New IPv6 Destination Options and Two
Message Types
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5.6. ICMP Home Agent Address Discovery Request
Message 5.7. ICMP Home Agent Address Discovery
Reply Message
5. Four New IPv6 Destination Options and Two
Message Types
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6.1. Modified Router Advertisement Message
Format 6.2. Modified Prefix Information Option
Format6.3. New Advertisement Interval Option
Format6.4. New Home Agent Information Option
Format
6. Modifications to IPv6 Neighbor Discovery
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6.5. Changes to Sending Router Advertisements6.6
. Changes to Sending Router Solicitations
6. Modifications to IPv6 Neighbor Discovery
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7. Requirements for IPv6 Nodes
7.1. Requirements for All IPv6 Hosts and Routers
7.2. Requirements for All IPv6 Routers
7.3. Requirements for IPv6 Home Agents
7.4. Requirements for IPv6 Mobile Nodes
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8. Correspondent Node Operation
8.1. Receiving Packets from a Mobile Node 8.2.
Receiving Binding Updates 8.3. Requests to
Cache a Binding 8.4. Requests to Delete a
Binding
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8. Correspondent Node Operation
8.5. Sending Binding Acknowledgements 8.6.
Sending Binding Requests 8.7. Cache Replacement
Policy 8.8. Receiving ICMP Error Messages 8.9.
Sending Packets to a Mobile Node
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9. Home Agent Operation
9.1. Receiving Router Advertisement Messages
9.2. Dynamic Home Agent Address Discovery
9.3. Primary Care-of Address Registration
9.4. Primary Care-of Address De-registration
9.5. Intercepting Packets for a Mobile Node
9.6. Tunneling Intercepted Packets to a Mobile
Node
9.7. Renumbering the Home Subnet
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10. Mobile Node Operation
10.1. Sending Packets While Away from Home
10.2. Interaction with Outbound IPsec Processing

10.3. Receiving Packets While Away from Home
10.4. Movement Detection
10.5. Forming New Care-of Addresses
10.6. Sending Binding Updates to the Home Agent
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10. Mobile Node Operation
10.7. Dynamic Home Agent Address Discovery
10.8. Sending Binding Updates to Correspondent
Nodes
10.9. Establishing Forwarding from a Previous
Care-of Address
10.10. Retransmitting Binding Updates
10.11. Rate Limiting for Sending Binding Updates
10.12. Receiving Binding Acknowledgements
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10. Mobile Node Operation
10.13. Receiving Binding Requests
10.14. Receiving ICMP Error Messages
10.15. Receiving Local Router Advertisement
Messages
10.16. Receiving Tunneled Router Advertisements
10.17. Using Multiple Care-of Addresses
10.18. Routing Multicast Packets
10.19. Returning Home
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11. Conclusion
1. Logical Architecture, not implementation
method
2. Be close to RFC standard
3. Commercial implementation could be considered
4. Implemented in IPv6 stack
5. Some questions still exists
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Thanks!
Suggestions are welcome!