freebsd-dev/share/examples/atm

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		HARP  |  Host ATM Research Platform
		===================================

		              HARP 3


What is this stuff?
-------------------
The Advanced Networking Group (ANG) at the Minnesota Supercomputer Center,
Inc. (MSCI), as part of its work on the MAGIC Gigabit Testbed, developed
the Host ATM Research Platform (HARP) software, which allows IP hosts to
communicate over ATM networks using standard protocols.  It is intended to
be a high-quality platform for IP/ATM research.

HARP provides a way for IP hosts to connect to ATM networks.  It supports 
standard methods of communication using IP over ATM.  A host's standard IP 
software sends and receives datagrams via a HARP ATM interface.  HARP provides 
functionality similar to (and typically replaces) vendor-provided ATM device 
driver software.

HARP includes full source code, making it possible for researchers to
experiment with different approaches to running IP over ATM.  HARP is 
self-contained; it requires no other licenses or commercial software packages.

HARP implements support for the IETF Classical IP model for using IP over ATM 
networks, including:

   o IETF ATMARP address resolution client
   o IETF ATMARP address resolution server
   o IETF SCSP/ATMARP server
   o UNI 3.1 and 3.0 signalling protocols
   o Fore Systems's SPANS signalling protocol



What's supported
----------------
The following are supported by HARP 3:

   o ATM Host Interfaces
	- FORE Systems, Inc. SBA-200 and SBA-200E ATM SBus Adapters
	- FORE Systems, Inc. PCA-200E ATM PCI Adapters
	- Efficient Networks, Inc. ENI-155p ATM PCI Adapters

   o ATM Signalling Protocols
	- The ATM Forum UNI 3.1 signalling protocol
	- The ATM Forum UNI 3.0 signalling protocol
	- The ATM Forum ILMI address registration
	- FORE Systems's proprietary SPANS signalling protocol
	- Permanent Virtual Channels (PVCs)

   o IETF "Classical IP and ARP over ATM" model
	- RFC 1483, "Multiprotocol Encapsulation over ATM Adaptation Layer 5"
	- RFC 1577, "Classical IP and ARP over ATM"
	- RFC 1626, "Default IP MTU for use over ATM AAL5"
	- RFC 1755, "ATM Signaling Support for IP over ATM"
	- RFC 2225, "Classical IP and ARP over ATM"
	- RFC 2334, "Server Cache Synchronization Protocol (SCSP)"
	- Internet Draft draft-ietf-ion-scsp-atmarp-00.txt,
		"A Distributed ATMARP Service Using SCSP"

   o ATM Sockets interface
	- The file atm-sockets.txt contains further information


What's not supported
--------------------
The following major features of the above list are not currently supported:

	o UNI point-to-multipoint support
	o Driver support for Traffic Control/Quality of Service
	o SPANS multicast and MPP support
	o SPANS signalling using Efficient adapters


For further information
-----------------------
For additional information about HARP, please see:

	http://www.msci.magic.net


Suggestions and Problem Reports
-------------------------------
While HARP is made available "as is" and is not supported, ANG is continuing
development of HARP.  We welcome suggestions for new or enhanced features, 
summaries of your experience with HARP, as well as reports of problems which
you may experience.  Feel free to contact us at harp-bugs@magic.net.

ANG is maintaining a mail list of those who wish to share their experiences
with HARP, learn of others' experiences, or receive information about future 
releases of HARP.  The HARP mailing list is at harp@magic.net.  To be added
to the list, send email to harp-request@magic.net.


Acknowledgments
---------------
This software was developed under the sponsorship of the Defense Advanced 
Research Projects Agency (DARPA).


Citing HARP
-----------
When citing HARP in published works, please use the following citation:

Host ATM Research Platform (HARP), Network Computing Services, Inc.
This software was developed with the support of the Defense Advanced
Research Projects Agency (DARPA).


Copyright and Permitted Use
---------------------------
The Host ATM Research Platform ("HARP") software (the "Software") is
made available by Network Computing Services, Inc. ("NetworkCS")
"AS IS".  NetworkCS does not provide maintenance, improvements or
support of any kind.

NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
In no event shall NetworkCS be responsible for any damages, including
but not limited to consequential damages, arising from or relating to
any use of the Software or related support.

Copyright 1994-1998 Network Computing Services, Inc.

Copies of this Software may be made, however, the above copyright
notice must be reproduced on all copies.

Portions of this Software include materials copyrighted by the Regents of
the University of California and by Sun Microsystems, Inc.  The applicable
copyright notices are reproduced in the files where the material appears.

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	@(#) $FreeBSD$