The Use of ATM Quality of Service to Support IP Internetworks
			     Bruce A. Mah
			 bmah@CS.Berkeley.EDU
			   The Tenet Group
		      Computer Science Division
		 University of California at Berkeley

The deployment of Asynchronous Transfer Mode (ATM) networks is a
recent development in the field of computer communication.  Through
the use of guaranteed-performance connections, ATM networks can
provide the quality of service (QOS) needed by a wide variety of
applications.  Integrating this new technology into the existing
Internet will require schemes for managing the transmission of IP
datagrams over ATM networks.  Such schemes will ideally take advantage
of the strengths of ATM, such as QOS capabilities, while bridging the
gap between the data forwarding models of ATM (virtual circuits) and
IP (datagrams).

In this talk, we document our current work in the use of performance
guaranteed virtual circuits to carry Internet traffic through an ATM
network used as a part of a heterogeneous internetwork.  In
particular, we are investigating the performance effects of different
QOS mappings, policies for multiplexing IP conversations onto virtual
circuits, and virtual circuit management policies.  We are preparing
to evaluate our schemes in the context of the XUNET II wide-area ATM
network testbed.