RFC 2332 (rfc2332) - Page 1 of 52

NBMA Next Hop Resolution Protocol (NHRP)

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Network Working Group                                         J. Luciani
Request for Comments: 2332                                  Bay Networks
Category: Standards Track                                        D. Katz
                                                           cisco Systems
                                                           D. Piscitello
                                                   Core Competence, Inc.
                                                                 B. Cole
                                                        Juniper Networks
                                                            N. Doraswamy
                                                            Bay Networks
                                                              April 1998


                NBMA Next Hop Resolution Protocol (NHRP)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1998).  All Rights Reserved.

Abstract

   This document describes the NBMA Next Hop Resolution Protocol (NHRP).
   NHRP can be used by a source station (host or router) connected to a
   Non-Broadcast, Multi-Access (NBMA) subnetwork to determine the
   internetworking layer address and NBMA subnetwork addresses of the
   "NBMA next hop" towards a destination station.  If the destination is
   connected to the NBMA subnetwork, then the NBMA next hop is the
   destination station itself.  Otherwise, the NBMA next hop is the
   egress router from the NBMA subnetwork that is "nearest" to the
   destination station.  NHRP is intended for use in a multiprotocol
   internetworking layer environment over NBMA subnetworks.

   Note that while this protocol was developed for use with NBMA
   subnetworks, it is possible, if not likely, that it will be applied
   to BMA subnetworks as well.  However, this usage of NHRP is for
   further study.

   This document is intended to be a functional superset of the NBMA
   Address Resolution Protocol (NARP) documented in [1].




Luciani, et. al.            Standards Track
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