What are the specific contents of network demand analysis?

From the content of the analysis, it should mainly include three contents: network demand analysis, network planning and structure analysis and network expansibility analysis.

1, network demand analysis

Including environmental analysis, business requirements analysis, management requirements analysis and security requirements analysis.

(1) Environmental analysis refers to understanding and mastering the basic information environment of enterprises, such as office automation, quantity configuration and distribution of computers and network equipment, mastery of professional knowledge and engineering experience by technicians, geographical environment (such as buildings) and so on. Through environmental analysis, we can get a preliminary understanding of the network construction environment and facilitate the follow-up work.

(2) The goal of business requirement analysis is to make clear the business type of the enterprise, the type of application system software and its requirements for network functional indicators (such as bandwidth and Qos).

Business demand is the primary link of enterprise network construction and the basic basis of network planning and design. The network planning that builds a network for the sake of the network and lacks the analysis of the business needs of enterprises is blind, which will bury all kinds of hidden dangers for the network construction.

Through the analysis of business requirements, it can provide decision-making basis for the following aspects:

What are the enterprise network functions that need to be realized or improved?

What are the enterprise applications that need technology?

Do you need email service?

Do you need a web server?

Need to surf the internet?

What kind of data * * * mode is needed.

How much bandwidth is needed.

Do you need a network upgrade?

Network management demand is an indispensable aspect of enterprise network construction, and whether the network provides stable services according to the design objectives mainly depends on effective network management. "Benefit from management" is also the truth of network engineering.

(3) Network management demand is an indispensable aspect of network construction. Whether the network provides stable services according to the design objectives mainly depends on effective network management. Network management includes two aspects:

Artificial management rules and strategies are used to regulate the behavior of network operators.

Network administrators use the functions provided by network devices and network management software to operate the network. Generally speaking, network management mainly refers to the second point. In the case of small network scale and simple structure, the network management function can be well completed.

With the increasing scale of modern enterprise network, it gradually shows its importance, especially the formulation of network strategy is very important for the effective implementation and management of network management and to ensure the efficient operation of the network.

The demand analysis of network management should answer the following similar questions:

Whether it is necessary to manage the network remotely.

Who will be in charge of network management?

What management functions are needed.

Which manufacturer's network management software to choose, and whether there is a detailed evaluation.

Which manufacturer's network equipment to choose and how manageable it is.

How to track, analyze and process network management information?

How to update the network management policy?

(4) With the expansion of network scale and the improvement of openness, network security issues become more and more prominent. Previously, those enterprise networks that did not consider network security not only suffered huge economic losses, but also damaged the corporate image.

Security design is one of the most important aspects in network design. The task of security design is to analyze threats and development requirements, which is required by many technical designs. Achieving security goals means making trade-offs. Security implementation may increase the cost of using and running the network, and strict security policies will also affect the productivity of users, and even lead to losses because of protecting resources and data. Poor security will lead users to find ways to bypass the security policy. If all communication must pass through encryption equipment, security will also affect the redundancy of network design.

The basic security requirement of customers is to protect resources from being used, stolen, modified or destroyed. Resources include network hosts, servers, user systems, Internet devices, system and application data, and corporate image.

Other more specific requirements include one or more of the following objectives:

Allow external users to access data on public ***Web or FTP servers, but not internal data.

Authorize and authenticate branch users, mobile users and remote users.

Detect intruders and isolate the damage they cause.

Verify routing table updates received from internal or external routers.

Protect data transmitted laterally to remote sites.

Physical protection of the host and network interconnection devices (for example, locking the devices in the house).

Use user accounts to check access rights of directories and files, and logically protect hosts and interconnected network devices.

Prevent applications and data from being infected with software viruses.

Train network users and network administrators on security threats and how to avoid security problems.

Protect products and intellectual property rights through copyright or other legal means.

2. Network planning and structure analysis

Include network planning, topology analysis and interconnection scheme with external network.

(1) Defining network planning means defining the scope of network construction, which is the premise of overall consideration.

Network size is generally divided into the following categories:

Workgroup or small office LAN.

Departmental LAN.

Backbone network

Enterprise network.

One of the advantages of defining the network size is that it is convenient to make appropriate plans, buy appropriate equipment and improve the cost performance of the network.

Determining the network size involves the following aspects:

Which departments need access to the network.

What resources do I need to go online?

How many internet users there are.

What grade of equipment is used?

Number of networks and network terminals.

(2) The network topology is restricted by the geographical environment of the enterprise, especially the topology of the local area network, which is almost related to the structure of the building. Therefore, the planning of network topology should fully consider the geographical environment of enterprises, so as to facilitate the implementation of later work.

Topological structure analysis shall specify the following indicators:

The number of clicks on the network.

Distribution of access points in the network.

Distribution position of network connection transfer points.

Location between network devices.

Distance parameters of various connections in the network.

Basic indicators in other structured cabling systems.

(3) The purpose of establishing a network is to close the distance between people and exchange information. The bigger the network, the better. With the rapid development of Internet applications such as e-commerce, home office and distance education, network interconnection has become an indispensable aspect of enterprise network construction. Interconnection with the external network involves whether it is necessary to access the Internet and what technology to use to access the Internet.

3. Network scalability analysis

Through scientific and reasonable planning, we can achieve the perfect effect of building a good network at low cost, achieving high performance and providing quality services.

Scalability has two meanings, that is, new departments can simply access existing networks; Second, new applications can be seamlessly integrated into existing networks. It can be seen that when planning the network, we should not only analyze the current technical indicators of the network, but also estimate the future growth of the network to meet the new demand, ensure the stability of the network and protect the investment of enterprises.

Developmental analysis should specify the following indicators:

(1) What are the new growth points of enterprise demand?

(2) What is the reserved ratio of network nodes and wiring?

(3) Which devices are convenient for network expansion.

(4) Estimation of bandwidth growth.

(5) The performance of the host equipment.

(6) Performance of operating system platform.