Cisco authorized self-study book for CCNP Support foundation learning Prepare for CCNP certification while mastering the guidelines for troubleshooting TCP/IP, NetWare IPX/SPX, and AppleTalk environments Apply a general problem-solving model to identify communication and configuration errors Learn basic packet structures and Cisco router functionality, including the route and switch processor mechanisms and the various levels of cache that reside in the router Find diagnostic commands and tools to resolve your problems with Catalyst(r) switches and VLAN communications as well as Frame Relay and ISDN BRI WAN technologies Cisco Internetwork Troubleshooting is a Cisco authorized self-paced learning tool. It teaches you how to perform fundamental hardware maintenance and troubleshooting on Cisco routers and switches. If you are pursuing CCNP certification and anticipate taking the CCNP Support Exam, this book helps you with strong and accurate early study material. As more advanced technology and functionality are added to communications infrastructures, the job of managing and maintaining networks becomes more difficult and the cost of internetwork failure rises. This book provides a systematic and logical approach to keep today's complex networks running smoothly. It is divided into four main areas: troubleshooting tools and methodology, routing and routed protocol troubleshooting, campus switch and VLAN troubleshooting, and WAN troubleshooting. Cisco Internetwork Troubleshooting provides basic through advanced information on networking technology, practices, and troubleshooting for TCP/IP, NetWare IPX/SPX, and AppleTalk LANs and WANs. Configuration examples demonstrate management and troubleshooting techniques. Problem-solving checklists and worksheets help you organize and document your troubleshooting steps. You will also find useful information on working with Cisco support, and the chapter-ending questions and exercises help you assess your understanding of key concepts and start you down the path for attaining your CCNP certification. Cisco Internetwork Troubleshooting is part of a recommended learning path from Cisco Systems that can include simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining. This volume is in the Certification Self-Study Series offered by Cisco Press(r). Books in this series provide officially developed training solutions to help networking professionals understand technology implementations and prepare for the Cisco Career Certifications examinations.