[Nets-seminars] Talk today (LATE START)
Richard G. Clegg
richard at richardclegg.org
Fri Nov 11 14:39:18 GMT 2011
Today's talk will be at 16:30 (not 16:00 as previously advertised) in
GS/302.
Richard Clegg and Stuart Clayman -- Experiments with virtual routers
Validating research ideas for new protocols or architectures requiring
large topologies is difficult. Simulation results can be doubtful and
referees often raise queries about the quality of simulation used. On
the other hand, testbed work can often limit the size of network
investigated. Even with system virtual machines such as Xen or VMWare,
the number of nodes tested can be quite small. In this work a
lightweight router running in a java virtual machine (JVM) has been
developed. This is a fully functioning router which can be used to test
research ideas. Existing software can be adapted to the virtual router
socket API and hence the software can be tested on a realistic
large-scale architecture and in an environment where routing and packet
delivery can be unreliable. Even on a modest sized testbed with only
nine machines, topologies with up to 720 routers have been tested. This
talk describes the virtual router and the testbed which has been
developed and the software which has been ported to use it. A motivating
example of research into placement and selection of management and
monitoring nodes is described in detail to show how the platform has
been successful in testing algorithms.
--
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/
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