He has held prior positions providing design, professional service and training in all aspects of data communications. Peter is a JNCI, holds JNCIE-M #473 and other certifications in routing and security. He is the author of O'Reilly's Juniper Networks Warrior, a co-author of O'Reilly's Juniper Enterprise Routing 2nd Ed., an author of Telecommunications, a Beginners Guide, Co-author of ISDN: Concepts, Facilities and Services (both published by McGraw Hill), and contributing author to The Handbook of Local Area Networks from CRC Press. Peter lives in the Champlain Valley in Northern Vermont, is an avid skier and sailor in the local environs.