Conference Networks are always challenging, they only need to be working for a short time, but they HAVE to be working. In the past i have setup, supported and torn down networks for conferences. Some involved links to external carriers using BGP, some involved doing a IPv6 roll out from scratch for wired and wireless clients.
Most of the conferences i have done have used carrier (telstra, optus, aarnet, etc.) and venue infrastructure. Overlaying a conference network on existing infrastructure (q-in-q, gre tunnels, etc.) where it was required.
Conference attendees generally want an easy access experience but maintaining security is also important. I have successfully designed and deployed temporary wireless coverage across different venues. I have also needed to enable authenticated access to Eduroam (using temporary radius servers) along with Web Content Filtering, Firewalling and Shaping services.
Some of the conferences i have worked on include:
AusCERT 2005 – 2013
International Maths Olympiad 2013
World Computer Congress 2010