rfc2794.txt

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9. Acknowledgements

   The authors would like to thank Gabriel Montenegro and Vipul Gupta
   for their useful discussions.  Thanks to Basaravaj Patil and Pete
   McCann for text describing actions to be taken when the home address
   is zero but the mobile node wishes to use the Mobile-IPv4
   Configuration Option to IPCP defined in RFC 2290.

References

   [1] Aboba, B. and M. Beadles, "The Network Access Identifier", RFC
       2486, January 1999.

   [2] Bound, J. and C. Perkins, "Dynamic Host Configuration Protocol
       for IPv6 (DHCPv6)", Work in Progress.

   [3] Bradner, S., "Key words for use in RFCs to Indicate Requirement
       Levels", BCP 14, RFC 2119, March 1997.

   [4] Johnson, D. and C. Perkins "Mobility Support in IPv6", Work in
       Progress.





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RFC 2794                    Mobile Node NAI                   March 2000


   [5] Montenegro, G., "Reverse Tunneling for Mobile IP", RFC 2344, May
       1998.

   [6] Montenegro, G. and V. Gupta, "Sun's SKIP Firewall Traversal for
       Mobile IP", RFC 2356, June 1998.

   [7] Perkins, C., "IP Mobility Support", RFC 2002, October 1996.

   [8] Solomon, J. and S. Glass, "Mobile-IPv4 Configuration Option for
       PPP IPCP", RFC 2290, February 1998.

   [9] Thomson, S. and T. Narten, "IPv6 Stateless Address
       Autoconfiguration", RFC 2462, December 1998.






































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RFC 2794                    Mobile Node NAI                   March 2000


A. Home Domain Allocation Function (HDAF)

   This appendix introduces a new function named the Home Domain
   Allocation Function (HDAF) that can dynamically assign a Home Address
   to the mobile node.

   Figure 2 illustrates the Home HDAF, which receives messages from
   foreign agents (e.g., FA) and assigns a Home Address within the Home
   Domain.  The HDAF does not perform any Mobile IP processing on the
   Registration Request, but simply forwards the request to a Home Agent
   (HA) within the network that is able to handle the request.

                                                     +------+
                                                     |      |
                                                 +---+ HA-1 |
        +------+       +------+       +------+   |   |      |
        |      |       |      |       |      |   |   +------+
        |  MN  |-------|  FA  |-------| HDAF +---+     ...
        |      |       |      |       |      |   |   +------+
        +------+       +------+       +------+   |   |      |
                                                 +---+ HA-n |
                                                     |      |
                                                     +------+

            Figure 2: Home Domain Allocator Function (HDAF)

   Upon receipt of the Registration Request from the mobile node (MN),
   FA extracts the NAI and finds the domain name associated with it.  FA
   then finds the HDAF that handles requests for the mobile node's
   domain.  The discovery protocol is outside of the scope of this
   specification.  As an example, however, FA might delegate the duty of
   finding a HDAF to a local AAA server.  The local AAA server may also
   assist FA in the process of verifying the credentials of the mobile
   node, using protocols not specified in this document.

















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RFC 2794                    Mobile Node NAI                   March 2000


Addresses

   The working group can be contacted via the current chairs:

   Basavaraj Patil
   Nokia Corporation
   6000 Connection Drive
   M/S M8-540
   Irving, TX 75039
   USA

   Phone:  [phone]
   Fax :  [phone]
   EMail:  [e-mail]


   Phil Roberts
   Motorola
   1501 West Shure Drive
   Arlington Heights, IL 60004
   USA

   Phone:  [phone]
   EMail:  [e-mail]


   Questions about this memo can be directed to:

   Charles E. Perkins
   Nokia Research Center
   313 Fairchild Drive
   Mountain View, California 94043
   USA

   Phone:  [phone]
   Fax:    [phone]
   EMail:  [e-mail]


   Pat R. Calhoun
   Sun Microsystems Laboratories
   15 Network Circle
   Menlo Park, California 94025
   USA

   Phone:  [phone]
   Fax:    [phone]
   EMail:  [e-mail]



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RFC 2794                    Mobile Node NAI                   March 2000


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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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