Douglas Richard Hanks Jr. is a Data Center Architect with Juniper Networks and focuses on solution architecture. Previously he was a Senior Systems Engineer with Juniper Networks supporting large enterprise accounts such as Chevron, HP, and Zynga. He is certified with Juniper Networks as JNCIE-ENT #213 and JNCIE-SP #875. Douglas' interests are network engineering and architecture for enterprise and service provider technologies. He is the author of several Day One books published by Juniper Networks Books. Douglas is also the co-founder of the Bay Area Juniper Users Group (BAJUG). When he isn't busy with networking, Douglas enjoys computer programming, photography, and Arduino hacking. Douglas can be reached at doug@juniper.net or on Twitter @douglashanksjr. Harry Reynolds has over thirty years experience in the networking industry, with the last 20 years focused on LANs and LAN interconnection. He is CCIE # 4977, and JNCIE # 3, and also holds various other industry and teaching certifications. Harry was a contributing author to Juniper Network Complete Reference (McGraw-Hill, 2002), and wrote the JNCIE and JNCIP Study Guides (Sybex Books, 2003). As a co-author he wrote Junos Enterprise Routing and Junos Enterprise Switching (O'Reilly, 2007 and 2009 respectively). Prior to joining Juniper, Harry served in the US Navy as an Avionics Technician, worked for equipment manufacturer Micom Systems, and spent much time developing and presenting hands-on technical training curriculums targeted to both enterprise and service provider needs. Harry has developed and presented internetworking classes for organizations such as American Institute, American Research Group, Hill Associates, and Data Training Resources. Currently Harry performs Customer Specific Testing that simulates one of the nation's largest private IP backbones at multi-dimensional scale. When the testing and writing is done, a rare event to be sure, Harry can be found in his backyard metal shop trying to make Japanese style blades. David Roy is a French network engineer who works for one of the major Service Provider in Europe. He works in a multivendor environment (Juniper, Cisco, Alcatel-Lucent) with a focus on Juniper equipment (he holds 3 JNCIE). He contributed to Day one books and wrote a This week book regarding MX.