Title: Proxy-PAR
Author(s): P. Droz, T. Przygienda.
Status: INFORMATIONAL
Date: May 2000
Length: 27891
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.
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