John Lautmann, Cisco Software Engineer, has developed and enhanced network management software for twelve years, and holds six patents. He has helped develop new Cisco IOS features ranging from Data Link Switching to IOS Tcl Interpeter and Digitally Signed Tcl Scripts. Ray Blair is a Cisco vertical solutions architect specializing in large network designs. He has over 20 years of experience in designing, implementing, and maintaining networks, and maintains three CCIE certifications. Arvind Durai, Advanced Services Technical Leader for Cisco, specializes in supporting major Cisco enterprise customers in finance, manufacturing, e-commerce, government, and healthcare. He maintains two CCIEs.