Silvia Hagen has been in the networking industry since 1990. Today she is CEO of Sunny Connection AG in Switzerland and works as a senior consultant and analyst for many mid-size and large sized companies. Her expertise is in IPv6 as well as in network and application performance and protocol analysis. She is the author of successful books such as 'Novell's Guide to Troubleshooting TCP/IP', published by IDG Books, "IPv6 Essentials" and "Planning for IPv6", both published by O'Reilly. She presents internationally on various networking topics offers customized corporate presentations and trainings. Silvia is president of the Swiss IPv6 Council. For more details and contact information visit her website at http://www.sunny.ch.