Interconnecting Cisco Network Devices, Part 1 (ICND1), Second Edition, is a Cisco®-authorized, self-paced learning tool for CCENT™ and CCNA® foundation learning. This book provides you with the knowledge needed to configure Cisco switches and routers to operate in corporate internetworks. By reading this book, you will gain a thorough understanding of concepts and configuration procedures required to build a multiswitch, multirouter, and multigroup internetwork that uses LAN and WAN interfaces for the most commonly used routing and routed protocols