David Callisch is vice president of marketing at Ruckus Wireless. With over 15 years of experience in marketing and marketing communications, David has focused his efforts on the networking hardware industry, and is a veritable fountain of information on this subject. He has extensive experience helping networking startups identify market opportunities, establish defensible differentiation, and create a unique brand. Oh, and he brings bucketloads of energy to every project. Before Ruckus, he was the director of communications at Aruba Networks, helping to launch the company and build the wireless LAN switching market segment. Previously, he served as director of communications at Allegro Networks, a supplier of carrier routing equipment, and held marketing positions at Alteon WebSystems, StrataCom, SynOptics/Bay Networks, and BT North America. His largish nostrils are his defining characteristic.