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Subject: NSFNet Intercontinental ISO Transmission
Message-ID: <14590@accuvax.nwu.edu>
Date: 11 Nov 90 15:03:34 GMT
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X-Telecom-Digest: Volume 10, Issue 811, Message 2 of 11


In article <14555@accuvax.nwu.edu> roeber@cithe2.cithep.caltech.edu
(Frederick Roeber) writes:
X-Telecom-Digest: Volume 10, Issue 807, Message 6 of 12

"It has been mentioned that recently much transatlantic computer
"traffic has been routed via satellite because of a broken undersea
"cable.  

[questions about Internet links overseas]

The following article appeared in the U-M Computing Center News
(October 25, 1990, V 5, No 18, Pg 10)

                   -----------------------

NSFNET DEMONSTRATES INTERCONTINENTAL ISO TRANSMISSION

[Editor's note: The following article is reprinted, with modifications,
 from the September 1990 issue of the Link Letter (Vol 3, No 4), 
published by the Merit/NSFNET backbone project]

At the end of September, partners in the National Science Foundation
Network (NSFNET) announced a succesful demonstration of
intercontinental data transmission using the International Standards
Organization Conectionless Network Protocol (ISO CLNP). The
international exchange of ISO CLNP packets was demonstrated betweeen
end systems at the NSFNET Network Operations Center in Ann Arbor and
in Bonn, West Germany, using the NSFNET backbone infrastructure and
the European Academic Supercomputer Initiative (EASInet) backbone.

The prototype OSI (this, I think is a typo - it should be ISO)
implementation is intended to provide wide area connectivity between
OSI networks, including networks using the DECNet Phase V protocols.

The new software was integrated into the NSFNET's "packet switching"
(data transmission) nodes by David Katz and Susan Hares of the Merit
Computer Network, with support from IBM's software developement
departments in Milford, CT and Yorktown Heights, NY.

NSFNET is the first federally supported computer network to acheive
international ISO CLNP transmission on an operating network, according
to Merit's Hans-Werner Braun, Principle Investigator for the NSFNET
Project.

The Prototype ISO implementation is being designed to coexist with
NSFNET's operational Internet Protocol (IP) network, and is a
significant step towards offering OSI services on the NSFNET backbone.
Eric Aupperle, President of Merit and acting director of ITD Network
Systems, says that "the demonstration shows that we're capable of
transporting OSI traffic. Now we're working to deploy this
experimental service as fast as possible."

An implementation of CLNP was first demonstrated by Merit/NSFNET staff
at the InterOp '89 conference. That implementation of CLNP was
originally developed as part of the ARGO project at the University of
Wisconsin, Madision, with the support of the IBM Corporation.

by Ken Horning
DTD Network Systems.