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1995-07-21
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030.50.3 The view from the Gigabit networking World
by David J. Farber <farber@central.cis.upenn.edu>
In subsequent issues of the ISOC Newsletter, this column will cover specific
research issues and accomplishments of both the NSF/DARPA/CNRI Gigabit Testbeds
Initiatives and other gigabit network related research activities. This first
contribution is timely since it is concurrent with the passage of the US HPCC
bill. The US testbeds, Aurora, Blance, CASA, Nector, and VISTANET are an
ongoing activity now in the second year of a three year initial program. It
aims are to provide a set of experimental testbed of different characteristics
with the intent of allowing the research community to have the opportunity
create and explore working prototype networks. This would in collaboration with
other research activities provide feedback to the hardware and software
designers as to what the long term technical requirements would be for a future
gigabit NREN.
This will provide an insight into the hardware/software alternatives that must
be faced in the creation of the Gigabit NREN as envisioned in the HPCC bill. It
is not the intention of the testbeds to have a bakeoff of technology. . We will
have a handful of major switch designs, some ideas of what we have to do with
protocols and operating systems -- for example the National Backplane ideas,
the application level protocols, the speed up of TCP/IP, ATM, PTM etc. These
approaches will not be examined in order to "pick one" but rather to get a
better handle on the fundamental issues. At the end of the initiative we will
be where the Arpanet was back in the mid 70's -- a working set of demos, some
protocol ideas and lots of enthusiasm.
And finally and most importantly, I believe we will have a good enough feel for
the benefits of gigabit networks to the science community, that we will be able
to answer the question we should be asking -- is such a network a reasonable
use of limited science resources?