RFC 2336 (rfc2336) - Page 1 of 5
Classical IP to NHRP Transition
Alternative Format: Original Text Document
Network Working Group J. Luciani
Request for Comments: 2336 Bay Networks
Category: Informational July 1998
Classical IP and ARP over ATM to NHRP Transition
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (1998). All Rights Reserved.
Abstract
This document describes methods and procedures for the graceful
transition from an ATMARP LIS[1] to an NHRP LIS[2] network model over
ATM.
1. Introduction
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 [6].
ATMARP defines an initial application of classical IP and ARP in an
ATM network environment configured as a LIS[1]. ATMARP only
considers application of ATM as a direct replacement for the "wires"
and local LAN segments connecting IP end-stations and routers
operating in the "classical" LAN-based paradigm.
The NBMA Next Hop Resolution Protocol (NHRP) allows a source station
(a host or router), wishing to communicate over a Non-Broadcast,
Multi-Access (NBMA) subnetwork, to determine the internetworking
layer addresses and NBMA addresses of suitable "NBMA next hops"
toward a destination station. If the destination is connected to the
NBMA subnetwork and direct communication is administratively allowed,
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. For the purposes of this
document, the NBMA network is of type ATM.
Luciani Informational