|
Free ebooks
 More computer ebooks Cisco Top-Down Network Design (2nd Edition) - Cisco Press
|
 Part I: Identifying Your Customer's Needs and GoalsPart I covers the requirements analysis phase. This phase starts with identifying business goals and technical requirements. The task of characterizing the existing network, including the architecture and performance of major network segments and devices, follows. The last step in this phase is to analyze network traffic, including traffic flow and load, protocol behavior, and quality of service (QoS) requirements. Part II: Logical Network Design During the logical network design phase, the network designer develops a network topology. Depending on the size of the network and traffic characteristics, the topology can range from simple to complex, requiring hierarchy and modularity. During this phase, the network designer also devises a network layer addressing model, and selects switching and routing protocols. Logical design also includes security planning, network management design, and the initial investigation into which service providers can meet wide-area networking (WAN) and remote-access requirements. Part III: Physical Network Design During the physical design phase, specific technologies and products to realize the logical design are selected. Physical network design starts with the selection of technologies and devices for campus networks, including cabling, Ethernet switches, wireless access points, wireless bridges, and routers. Selecting technologies and devices for remote-access and WAN needs follows. Also, the investigation into service providers, which began during the logical design phase, must be completed during this phase. Part IV: Testing, Optimizing, and Documenting Your Network Design The final steps in top-down network design are to write and implement a test plan, build a prototype or pilot, optimize the network design, and document your work with a network design proposal. If your test results indicate any performance problems, then during this phase you should update your design to include such optimization features as traffic shaping and advanced router queuing and switching mechanisms. Download free ebook for networking: Top-Down Network Design (2nd Edition)
|
