Silvano Gai has spent 11 years as Cisco Fellow, architecting Cisco's Catalyst, MDS, and Nexus switches. He has written several books on networking, written multiple Internet Drafts and RFCs, and is responsible for 80 patents and applications. He teaches a course on this book's topics at Stanford. Tommi Salli, Cisco Technical Marketing Engineer, has nearly 20 years of experience with servers and applications at Cisco, Sun, Veritas, and Nuova Systems. Roger Andersson, Cisco Manager, Technical Marketing, spent more than 12 years in EMC's CLARiiON Engineering Division, and 5 years as Technical Product Manager at VERITAS/Symantec. He is now focused on Cisco UCS system management.