RFC 2520 (rfc2520) - Page 1 of 8

NHRP with Mobile NHCs

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Network Working Group                                       J. Luciani
Request for Comments: 2520                             Nortel Networks
Category: Experimental                                       H. Suzuki
                                                         Cisco Systems
                                                          N. Doraswamy
                                                       Nortel Networks
                                                             D. Horton
                                                          CiTR Pty Ltd
                                                         February 1999


                         NHRP with Mobile NHCs

Status of this Memo

   This memo defines an Experimental Protocol for the Internet
   community.  It does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This document describes an extension to NHRP [1] which would allow
   Mobile NHCs to perform a registration with and attach to an NHS in
   their home LIS in an authenticated manner.

   As described in this document, Mobile NHCs are NHCs which are not
   configured with enough information to find a specific serving NHS in
   their home LIS, but which have a mechanism to find an NHS (which may
   or may not be a serving NHS) to which they will attach.  As described
   in [1], an NHC may attach to a 'surrogate' NHS by using a mechanism
   such as an anycast address.  In this case, the NHC may use the
   surrogate NHS to send a NHRP Registration Request toward the NHC's
   home LIS where a serving NHS resides.  However, as defined in [1],
   packet authentication is performed on a hop by hop basis.  In the
   mobile NHC case, it is not practical for the mobile NHC be in a
   security relationship with every surrogate NHS, thus it is presumably
   desirable to have some form of end to end only authentication for the
   case of a mobile NHC's registration.  This document describes an
   authentication extension for NHRP which has such end to end only
   semantics.






Luciani, et al.               Experimental
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