RFC 2843 (rfc2843) - Page 1 of 13

Proxy-PAR

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Network Working Group                                           P. Droz
Request for Comments: 2843                                          IBM
Category: Informational                                   T. Przygienda
                                                                  Siara
                                                               May 2000


                               Proxy-PAR

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 (2000).  All Rights Reserved.

Abstract

   Proxy-PAR is a minimal version of PAR (PNNI Augmented Routing) that
   gives ATM-attached devices the ability to interact with PNNI devices
   without the necessity to fully support PAR. Proxy-PAR is designed as
   a client/server interaction, of which the client side is much simpler
   than the server side to allow fast implementation and deployment.

   The purpose of Proxy-PAR is to allow non-ATM devices to use the
   flooding mechanisms provided by PNNI for registration and automatic
   discovery of services offered by ATM attached devices.  The first
   version of PAR primarily addresses protocols available in IPv4. But
   it also contains a generic interface to access the flooding of PNNI.
   In addition, Proxy-PAR-capable servers provide filtering based on VPN
   IDs [1], IP protocols and address prefixes. This enables, for
   instance, routers in a certain VPN running OSPF to find OSPF
   neighbors on the same subnet. The protocol is built using a
   registration/query approach where devices can register their services
   and query for services and protocols registered by other clients.

1 Introduction

   In June of 1996, the ATM Forum accepted the "Proxy-PAR contribution
   as minimal subset of PAR" as a work item of the Routing and
   Addressing (RA) working group, which was previously called the PNNI
   working group [2].  The PAR [3] specification provides a detailed
   description of the protocol including state machines and packet
   formats.




Droz & Przygienda            Informational
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