Customer requirements in project management11/30/2023 ![]() Step 5 Revise the document as necessary to eliminate errors and omissions. Step 4 Verify the design requirements with the customer, and obtain customer approval. Step 3 Produce a draft document that describes the design requirements. Step 2 Query the customer for a verbal description of the initial requirements. ![]() Step 1 Extract the initial customer requirements (from the RFP or RFI). Figure 2-6 illustrates an iterative approach to developing the design requirements document.įigure 2-6 Iterative Approach to Identifying Customer Requirementsįigure 2-6 illustrates the following steps: The first step in the design process should be predocumenting (sifting, processing, reordering, translating, and so forth) the design requirements and reviewing them with the customer for verification and approval, obtaining direct customer input, in either oral or written form. An RFI is typically a less formal document an organization issues to solicit ideas and information from vendors about a specific project. An RFP is a formal request to vendorsįor proposals that meet the requirements that the document identifies. Initial design requirements are typically extracted from the Request for Proposal (RFP) or Request for Information (RFI) documents that the customer issues. The organization also requires a campus wireless radio frequency (RF) site survey to determine mobility deployment options and equipment scope.ĭetermining requirements includes extracting initial requirements from the customer and then refining these with other data that has been collected from the organization. The central office backbone and some branch offices require redundant equipment and redundant links are needed. Routing must be redesigned to support the new addressing plan and to provide greater reliability and redundancy. Introduction of private IP addresses requires a new addressing plan. All branch offices' LANs will be upgraded to Fast Ethernet technology. The backbone at the central office needs to be redesigned. ![]() Table 2-1 Corporation X Network Design Scope Assessment Table 2-1 exhibits sample results of assessing the scope of design for a sample enterprise, Corporation X. NOTE Appendix C, "Open System Interconnection (OSI) Reference Model," details the seven layers of the OSI reference model. The physical and data link layers include decisions about the connection types and the technologies to be used, such as Gigabit Ethernet, Asynchronous Transfer Mode, and Frame Relay.The application layer includes the design of application data transport (such as transporting voice).The network layer includes the routing and addressing design.The network designer should review the project scope from the protocol layer perspective and decide whether the design is needed for only the network layer, or if other layers are also involved. The Open Systems Interconnection (OSI) reference model is important during the design phase. Adding wireless client mobility or provisioning core redundancy are designs that would likely affect only the campus. A project to reduce bottlenecks on a slow WAN is an example that would likely affect only the WAN. Whether the design addresses a single function or the network's entire functionality.Įxamples of designs that would involve the entire network include one in which all branch office LANs are upgraded to support Fast Ethernet, and a migration from traditional Private Branch Exchange (PBX)-based telephony to an IP telephony solution.For example, the designer must ascertain whether the design is for a set of Campus LANs, a WAN, or a remote-access network. Whether the design is for an entire enterprise network, a subset of the network, or a single segment or module.Whether the design is for a new network or is a modification of an existing network.When assessing the scope of a network design, consider the following: After gathering all customer requirements, the designer must identify and obtain any missing information and reassess the scope of the design project to develop a comprehensive understanding of the customer's needs.Īssessing the Scope of a Network Design Project We begin by explaining how to assess the scope of the design project. This section describes the process of determining which applications and network services already exist and which ones are planned, along with associated organizational and technical goals and constraints. To design a network that meets customers' needs, the organizational goals, organizational constraints, technical goals, and technical constraints must be identified. Network-accessible organizational data and mission-critical applications that are essential to the organization's operations depend on network availability. As the organization's network grows, so does the organization's dependency on the network and the applications that use it.
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