Small and medium-sized network engineering design
Source: Shangpin China |
Type: website encyclopedia |
Time: June 21, 2014
Small and medium-sized network engineering scheme design is a comprehensive skill. Learning network scheme design can become a pre-sales engineer of system integration. As a good network solution designer or pre-sales engineer, you must first have solid basic network knowledge, good communication ability with Sichuan customers, and familiarity with the performance and price of network products. The network scheme design roughly includes the following steps: user demand analysis, scheme design, selection of communication media and equipment, and drawing of network engineering construction drawings. Shangpin China Website construction The company describes the key problems in the above steps. The core of network scheme design and implementation is the needs of users, so the success depends entirely on whether it can meet the needs of users. Before scheme design, it is necessary to understand what Sichuan users need for network information applications. Only when the demand is high can we plan and establish the most ideal network environment to avoid user complaints and waste of human and financial resources. 1. Difficulties of share analysis Requirement analysis is the beginning of scheme design. It is also the cornerstone of scheme design. In the past, 80% of the failed scheme designs were caused by improper demand analysis. Therefore, the key to the success of a scheme is whether the demand analysis is done well. Demand analysis should first understand the macro issues, and then understand the details. Some customers have only a vague sense of their needs, of course, they can't clearly describe their own needs. For example, when many departments, institutions and units across the country are building application systems and networks, most of the client's office staff are not clear about the purpose of computer networks, and lack experts and knowledge in IT system construction. At this point, the user will ask the system analyst to imagine the requirements. According to the past history, customers will put forward new requirements and demand changes for network demand in different stages and periods with their understanding of information construction and improvement of their own business level. In fact, for any successful network scheme, it is almost never formed at one time. Therefore, we must accept the fact that "requirements will change". When conducting requirements analysis, we should know how to prevent problems before they occur. We should try our best to analyze which are stable requirements and which are volatile requirements, so that during system design, the core of software can be built on stable requirements while leaving room for change. 2. Shake analysis method According to previous engineering experience, the working method of requirements analysis should be positioned in "three stages", also known as "three-step method". (1) Phase I: interview and exchange Interview communication with the user's different level and business level personnel. The main purpose is to understand the user's needs for the network in general, and to know more about the specific and objective information of the Sichuan user's organizational structure, business process, hardware environment, software environment and existing operating system, and to determine the person in charge and contact person of the network project at the user's side. Operation mode: interview and form adjustment. Result form: transfer report, business process report. (2) The second stage: induction and enlightenment On the basis of understanding user information, combined with the existing hardware and software implementation scheme, make a simple user process page. By introducing the page to Sichuan users, let Sichuan users feel the accuracy of their understanding of network needs, discuss the rationality, accuracy, convenience and habit of business process design with users, and put forward suggestions and methods for improvement in a timely manner. Operation mode: visit (induction), prototype demonstration. Result form: research analysis report, prototype feedback report, business process report (3) The third stage: confirmation summary On the basis of the achievements of the above two stages, enter the specific process refinement and data item confirmation stage. In this stage, the contractor must provide the prototype system, clear business process report and data item table, and be able to clearly describe the business process design objectives of the system to Sichuan users. Sichuan Hufang can review business process reports and data item tables. And operating the DEMO system provided by the contractor. To put forward feedback, and sign the acceptable reports and documents for confirmation. Operation form: visit (review and confirmation). Submit business process report and data item table; Prototype demonstration system. Result form: demand analysis report, data item, business process report, prototype system feedback. The last three can be included in the demand analysis report. Submit) "The user and the supervisor shall confirm and archive. On the whole, the three stages of demand analysis are an important part of demand research that cannot be ignored. The implementation and adoption of the three stages, or air step method, provide users and scheme designers with the same guarantee for the success of the project. Of course, in the process of system construction. Especially when the iterative development model is adopted, the work of requirement analysis needs to be carried on all the time, while the work of later requirement improvement focuses on the latter two stages.
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