NHRP with Mobile NHCs (RFC2520)
Original Publication Date: 1999-Feb-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
J. Luciani: AUTHOR [+4]
This document describes an extension to NHRP  which would allow Mobile NHCs to perform a registration with and attach to an NHS in their home LIS in an authenticated manner.
Network Working Group J. Luciani
Request for Comments: 2520 Nortel Networks
Category: Experimental H. Suzuki
CiTR Pty Ltd
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 (C) The Internet Society (1999). All Rights Reserved.
This document describes an extension to NHRP  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 , 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 ,
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
The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,
SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL, when they appear in this
document, are to be interpreted as described in .
This document describes an extension for Mobile NHCs to use when they
wish to register with their home LIS but initially connect to a non-
serving NHS to do so. The reader is encouraged to read  for more
details on the NHRP registration process.
2.0 Definition of the NHRP Mobile NHC Authentication Extension
Compulsory = 1
Type = 10 (proposed)
Length = variable
The NHRP Mobile NHC Authentication Extension is carried in NHRP
Registration packets to convey end to end authentication Information.
This extension is defined in contrast to the NHRP Authentication
Extension defined in...