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\begin{document}

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Network administrators need to be aware of the state of their network. While
link-state routing protocols like OSPF have the required information, there was
no easy way to present it to the administrator. To solve this problem, we
developed Birdvisu, a program to visualise the topology as seen by the BIRD
Internet Routing Daemon. Our approach allows the topology to be easily
annotated with other data, providing an extensible way of analysing the
topology. While not fully featured yet, Birdvisu helped discover several
misconfigurations in a community-run network connecting about 1600 people.

\end{document}