Biographical Sketch: Georg Senfleben is an IT Specialist in IBM Germany and has more than 23 years experience in the IBM mainframe environment. He is a member of IBM's Networking Support Team in Europe. Before supporting customer in the VTAM and TCP/IP area, he was working as a system performance and capacity specialist for DB2 for z/OS. Georg holds a degree in Electrical Engineering and is a co-author of the IBM ITSO Redbook publications on z/OS V2R1 Communications Server Volume 1-4.