Stefano Previdi joined Cisco in 1996 after 10 years spent in network operations. He started in the Technical Assistance Center as a routing protocols specialist and then moved to consulting engineering to focus on IP backbone technologies such as routing protocols and MPLS. In 2000, he moved to the IOS engineering group as a developer for the IS-IS routing protocol.
Dan Tappan is a distinguished engineer at Cisco Systems. He has 20 years of experience with internetworking, starting with working on the ARPANET transition from NCP to TCP at Bolt, Beranek and Newman. For the past several years, Dan has been the technical lead for Cisco's implementation of MPLS (tag switching) and MPLS/VPNs.
Emmanuel Gillain has been with Cisco Systems since 1997. He got his CCIE certification in 1998 and currently is a systems engineer in EMEA on the Global Telco Team. His responsibilities include presales and technical account management for major global service providers. He helps in identifying business opportunities from a technical standpoint and provides presales and technical support. He earned a five-year degree in electrical engineering in 1995 and worked for two years at France Telecom/Global One.