RFC 2843 (rfc2843) - Page 1 of 13
Proxy-PAR
Alternative Format: Original Text Document
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