Cisco Design Fundamentals is an effective methodology guide for network engineers. The book explains design techniques, best practices and subject matter for optimized network design and security. The books starts with foundation topics that include switching and routing. In addition there is a discussion of WAN protocols, wireless essentials, application services and application models. The new multilayered design approach provides the framework for any network deployment. The audience will learn how to apply the methodology from business and design requirements to equipment rack. The methodology is an excellent guide for all skill levels that include network engineers, support engineers and architects. The steps include requirements analysis, network assessment, WAN design, campus design, network security, network management, design validation and deployment workflow. Specific topics include network topologies, bandwidth requirements, WAN transport, campus protocols and feature set requirements. In addition the process includes network addressing, IOS selection, application services and traffic modeling. The selection of various WAN, campus and routing protocols are discussed as well. The reader will learn how to apply the multilayered design strategy with a DMVPN case study.