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Visualization of Computer Networks

Visualization of Computer Networks. By Richard Zschech Supervisors: Dr. Ken Hawick, Dr. Paul Coddington. Goals. Development of generic graph visualising package. Develop three dimensional graph layout algorithms.

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Visualization of Computer Networks

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  1. Visualization of Computer Networks By Richard Zschech Supervisors: Dr. Ken Hawick, Dr. Paul Coddington.

  2. Goals • Development of generic graph visualising package. • Develop three dimensional graph layout algorithms. • Network monitoring package as an application for the graph visualising package.

  3. 3D Graph Package Graph Root Scene Node Node 1 Node 2 Node N Edge 1 Edge 2 Edge N Transform Transform Transform Transform Transform Transform Appearance Appearance Appearance Appearance Appearance Appearance Node Shape Edge Shape

  4. Layout Algorithms • Requirements: • Even spacing between nodes. • No overlapping edges. • Fixed length edges. • Algorithms: • Genetic algorithm. • Spring algorithm.

  5. The Graph File Format • Extensible Markup Language (XML) • Advantages: • No version problems like Java serialisation • Human readable and editable • Problems: • No positional information about nodes. • No support for user defined information attached to the nodes and edges.

  6. XML Graph Example • <graph> • <node id="a"/> • <node id="b"/> • <node id="c" position=<0.0 1.0 2.0/> /> • <edge id="e1" tail="c" head="b“ directed="true"/> • <edge id="e2" tail="c" head="a“ directed="true"/> • <edge id="e3" tail="b" head="a“ directed="true"/> • </graph>

  7. Network Monitoring Module • Simple Network Management Protocol (SNMP) • For Exploring the network using routing tables. • Gathering statistics. • Building and updating the graph.

  8. The User Interface Module • Freely move around and interact with the graph. • Filter different parts of the graph. • Choose graph layout algorithms. • Load and save the graph. • Explore the network via the network monitoring module.

  9. The Overall Design Graph Graph3D Graph File Format Graph Layout User Interface Network Monitoring

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