Transcript BRITE integration with ns-3

BRITE integration with ns-3
Joshua Pelkey and Dr. George Riley
Wns3 March 25, 2011
Overview
• The Boston University Representative Internet Topology
gEnerator (BRITE)
– Topology generation framework
• Integrating with ns-3
– Leverage the power of BRITE, i.e. let BRITE create the
topologies and ns-3 run the simulations
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Project Goals
• Easily leverage the power of BRITE within ns-3, to create
large-scale Internet topologies
• Provide example ns-3 script to show use
• Code documentation, including doxygen
• Manual section
• Use download.py to completely modularize BRITE in ns-3
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Implementation Overview
• Original BRITE C++ code is (very) slightly modified and
maintained in a mercurial repo on the ns-3 code server
• This repo is pulled down and built with the included
Makefile. A library, libbrite.so is built
• This library is linked with ns-3 during the ./waf build
process in ns-3
• Helper class, BriteTopologyHelper, exists to interface
with the original BRITE code which builds the topology.
Finally, the helper creates an identical ns-3 topology and
can be used to set up simulations
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Usage and Demo
• After linking BRITE, try some of these to see it in action -make sure python bindings are enabled if you want to
use the visualizer:
– ./waf --run ‘brite-generic-example’ --visualize
– ./waf --run ‘brite-generic-example --confFile=../BRITE/conf_files/RTBarabasi20.conf’ --visualize
– ./waf --run ‘brite-generic-example --confFile=../BRITE/conf_files/RTBarabasi.conf’ –visualize
• To randomize the topology node placement and link
bandwidths and delays, pass in a new seed file:
– ./waf --run ‘brite-generic-example --newseedFile=../BRITE/seed_file’ --visualize
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RTWaxman5
Figure 1. RTWaxman5 (5 nodes, 7 edges)
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RTWaxman20
Figure 2. RTWaxman20 (20 nodes, 40 edges)
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RTBarabasi
Figure 3. RTBarabasi (100 nodes, 197 edges)
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ASWaxman
Figure 4. ASWaxman (1000 nodes, 2000 edges)
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Project Goals: status
• Easily leverage the power of BRITE within ns-3, to create
large-scale Internet topologies
• Provide example ns-3 script to show use
• Code documentation, including doxygen
• Manual section
• Use download.py for BRITE in ns-3
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More Information
• BRITE website: http://www.cs.bu.edu/brite/
• Ns-3 BRITE integration wiki with instructions to get the
code, build, and use:
http://www.nsnam.org/wiki/index.php/Ns3_BRITE_Integration
or just search for “ns-3 BRITE” in Google
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