Mobile IP using private IP address

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Mobile IP using private IP address

• Presented by NCTU CIS Netlab W.Y Chiu

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Introduction

• Background
• Problems
• KDDIs solution
• NTHUs solution
• Comparison

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Background

• IP-based mobile network
• IETF Mobile IP (RFC2002)
• IP starvation
• Mobile IPv6 (draft-ietf-mobileip-rfc2344)
• NAT (RFC 1631) Mobile IPv4

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Problems

• Unreachable HA
• Insufficient Translation information
• Private address duplication
• Handoff Detection
• Unknown Home HA

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KDDIs solution

• Mobile IP Using Private IP Address
• Toshihiko Kato, Akira Idoue, Hidetoshi Yokota
• Proceedings of IEEE Computer and Communications.
  P491-P497,July 2001

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KDDIs solution
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KDDIs solution

• Data Structure in FA
• Home address of the MN
• MAC
• Address of HA
• Lifetime of the registration to HA
• Global IP address assigned for MN
• Life time of global IP address

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KDDIs solution

• Data structure in HA
• Home address of the MN
• Address of FA
• Lifetime of the registration by FA
• Global IP address for MN, if assigned
• Lifetime of global IP address

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KDDIs solution

• Mobile Node Registration

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KDDIs solution

• Procedure for Mobile Node Initiated Communication

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KDDIs solution

• Procedure for Correspondent Node Initiated
  Communication

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KDDIs solution

• Private Address Collision

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KDDIs solution

• Management of Lifetime
• Lifetime of MN registration
• Lifetime of global IP address
• DNS cache for mobile node

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KDDIs solution 2

• Mobile IP Network Supporting Private IP Addresses
  Utilizing Regional Registration and NAT Function
• Toshihiko Kato, Akira Idoue Hidetoshi Yokota
• Parallel and Distributed Systems, 2001. ICPADS
  2001. Proceedings. Eighth International
  Conference on , 2001 Page(s) 141 -146

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KDDIs solution 2
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KDDIs solution 2

• MN registration

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KDDIs solution 2

• MN originated packet transfer

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KDDIs solution 2

• MN terminated packet transfer

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KDDIs solution 2

• Regional registration
• Receiving new FA agent advertisement
• MN issues Regional Registration Request
• GFA returns Regional Registration Reply

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NTHUs solution

• Integration of NAT with Mobile IP
• Ching-Yang Huang, Jen-Chi Liu, Jyh-Cheng Chen,
  Min-Chia Jiang, Hong-Wei Lin
• TANET 2002

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NTHUs solution

• Both HA and FA are behind NAPT
• UDP Tunneling

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NTHUs solution

• Static Port
• Bind the registration (port 434) of HA to NAPTs
  port 434
• Reverse Tunneling

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NTHUs solution

• Registration

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NTHUs solution

• Data Transfer

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Comparison