A top-down approach to design has many benefits compared to a bottom-up approach, including the following:
■ Incorporating the customer organization's requirements
■ Providing the customer and the designer with the "big picture" of the desired network
■ Providing a design that is appropriate for both current requirements and future development
The disadvantage of the top-down approach is that it is more time-consuming than the bottom-up approach; it necessitates a requirement analysis so that the design can be adapted to the identified needs.
A benefit of the bottom-up approach—selecting the devices and technologies and then moving toward services and applications—is that it allows a quick response to a design request. This design approach facilitates designs based on the designer's previous experience.
The major disadvantage of the bottom-up approach is that it can result in an inappropriate design, leading to costly redesign.
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What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.