Silvia Hagen has been working in the networking industry since 1990. Today she is CEO of Sunny Connection AG in Switzerland and works as a professional consultant and analyst for many mid-size and large sized companies. Her expertise is in Identity Management, Protocol and Performance Analysis and IPv6. She is the author of several successful books including ‚IPv6 Essentials‘ published by O‘Reilly. She also presents internationally on various networking topics for Cisco Conferences, Burton Catalyst, Novell‘s Brainshare, NetWare Users International Conferences, Universities and also offers customized corporate presentations and public courses. She was a founding member of the Swiss IPv6 Task Force.