Diane Teare is a professional in the networking, training, project management, and e-learning fields. She has more than 25 years of experience in designing, implementing, and troubleshooting network hardware and software, and has been involved in teaching, course design, and project management. She has extensive knowledge of network design and routing technologies, and is an instructor with one of the largest authorized Cisco Learning Partners. She was the director of e-learning for the same company, where she was responsible for planning and supporting all the company's e-learning offerings in Canada, including Cisco courses. Diane has a bachelor's degree in applied science in electrical engineering and a master's degree in applied science in management science. She currently holds her Cisco Certified Network Professional (CCNP), Cisco Certified Design Professional (CCDP), and Project Management Professional (PMP) certifications. She co-authored the Cisco Press titles Designing Cisco Network Service Architectures (ARCH), Second Edition; Campus Network Design Fundamentals; the three editions of Authorized Self-Study Guide Building Scalable Cisco Internetworks (BSCI); and Building Scalable Cisco Networks. Diane edited the two editions of the Authorized Self-Study Guide Designing for Cisco Internetwork Solutions (DESGN) and Designing Cisco Networks. Richard E. Froom, CCIE No. 5102, attended Clemson University where he majored in computer engineering. While attending Clemson, Richard held positions at different times for the university network team, IBM, and Scientific Research Corporation. After graduation, Richard joined Cisco. Richard's first role within Cisco was as a TAC engineer supporting Cisco Catalyst switches. After several years in the TAC, Richard moved into a testing role supporting Cisco MDS and SAN technologies. In 2009, Richard moved into the Enhanced Customer Aligned Testing Services (ECATS) organization within Cisco as a test manager of a team focused on testing customer deployments of UCS and Nexus. Balaji Sivasubramanian is a product line manager in the Cloud Services and Switching Technology Group focusing on upcoming products in the cloud services and Data Center virtualization area. Before this role, Balaji was a senior product manager for the Catalyst 6500 switches product line, where he successfully launched the Virtual Switching System (VSS) technology worldwide. He started his Cisco career in Cisco Technical Assistant Center working in the LAN switching products and technologies. Balaji has been a speaker at various industry events such as Cisco Live and VMworld. Balaji has a Master of Science degree in computer engineering from the University of Arizona and a Bachelor of Engineering degree in electrical and electronics from the College of Engineering, Guindy, Anna University (India). Erum Frahim, CCIE No. 7549, is a technical leader working for Enhanced Customer Aligned Testing Services (ECATS) at Cisco. In her current role, Erum is leading efforts to test Datacenter solutions for several Cisco high-profile customers. Prior to this, Erum managed the Nexus platform escalation group and served as a team lead for Datacenter SAN Test lab under the Cisco Datacenter Business Unit. Erum joined Cisco in 2000 as a technical support engineer. Erum has a Master of Science degree in electrical engineering from Illinois Institute of Technology and also holds a Bachelor of Engineering degree from NED University, Karachi Pakistan. Erum also authors articles in CertificationMagazine and Cisco.com. Amir Ranjbar, CCIE No. 8669, is a Certified Cisco Systems Instructor and an internetworking consultant. Operating under his own corporation, AMIRACAN Inc., Amir offers his training services to Global Knowledge Network, his consulting expertise to a variety of clients (mainly Internet service providers), and his technical writing skills to Cisco Press. Born in Tehran, Iran, Amir immigrated to Canada in 1983 at the age of 16 and completed his Master's degree in knowledge-based systems (a branch in AI) in 1991. He has been involved in training, consulting, and technical writing for the greater part of his career. Amir Ranjbar can be contacted through his e-mail address email@example.com.