Proposal of Hierarchical Mobile IP Supporting Private Addresses Utilizing NAT Function and Its Implementation on UNIX Operating System

Akira IDOUE  Hidetoshi YOKOTA  Toshihiko KATO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E84-B   No.12   pp.3155-3165
Publication Date: 2001/12/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Network Software)
Category: Mobile Service and Technologies
Keyword: 
Mobile IP,  private address,  NAT,  regional registration,  

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Summary: 
It is widely recognized that IP-based mobile network will be a dominant trend. For mobile IP networks, the address starvation problem and scalable mobility management for mobile nodes are important issues. In order to cope with these issues, we propose an approach to realize mobile IP network supporting private addresses for mobile nodes. Our approach introduces regional registration of mobile nodes (Hierarchical Mobile IPv4) and coordinates NAT and DNS functions with the Mobile IP protocol. It enables a mobile node to be assigned a global address temporally in a visited network and to accept a call initiated by a correspondent node connected to the global IP network. This paper describes the detailed design of our approach and the implementation of proposed procedures based on the Mobile IPv4 software developed by the CMU Monarch project.