For network planning and design of vocational schools

Abstract: As information technology's increasing breadth and depth of application, use information technology to strengthen school management, we must build a local area network, through a needs analysis, site planning and cabling system design, network topology selected, the soft hardware selection, mainly to complete the network applications, network security management appropriate aspects of the network planning and design can accomplish very well the requirements of the application of information technology education.

Paper Keywords: information technology; local area network, planning

After entering the information age, whether it is college or vocational, to improve the standard of education must be the use of information technology to improve school productivity and management of network technology makes the network infrastructure from construction to maintenance and management have become very Simple and smart, rich network product line and continue to lower prices, allowing vocational college according to their own circumstances, in accordance with actual economic conditions to build their own network, for network construction investment is no longer a case for vocational a burden.

A technologically advanced design, reasonable structure, complete functions, the network can be upgraded vocational campus network from the following aspects need to be prepared.


A clear needs analysis and goal of building a network

Vocational college must first consider the cost of network construction, and then meet the actual needs of the university network planning and design make this part of the work, to make several points: to understand the status and needs of each college, understand the user's purpose is clear information management needs also need to master the amount of capital investment, understanding college environment, to determine the college's data flow management architecture, master of the current network usage, clear user needs to build the network, established the goal of building a network in the development of network solutions to consider when building a simple network topology, the use of non-management models of network equipment, the user's simple application, oriented, appropriate security requirements and other aspects of the problem.


2 Site Planning and Cabling System Design

Networking site planning is the most critical aspect of planning must be field trips, site survey, according to the building floor, room to make specific arrangements for specific layout, floor space the size of the decision according to the network layout, the Computer's display, network layout, the location of the primary server or switch, etc., to determine the power outlet and the wire to determine the location of doors and windows, plumbing and heating and ventilation management position.

From the structured cabling system design and construction with the side, the architectural design department to understand this technology is not enough attention is not enough. This has resulted in the reserved space and should be reserved for the construction of the pipeline construction is difficult to place, even in the masonry and decoration stage yet in place, which will result in an increase in wiring and construction works is often difficult to destroy such structures and aesthetic impact results cabling design to solve the transmission frequency and transmission rate, shielded and unshielded twisted pair selection, over-current and over voltage protection design, so that wiring design is satisfactory.


3 the choice of network topology

Computer network topologies are star, ring, bus, tree, mesh-based and other types, according to space, equipment and network specific circumstances, can according to low cost, flexibility and scalability, reliability high, the principles of local conditions to select the network topology. With the rapid development of Ethernet, the Ethernet bus topology basically been eliminated, the network topology is commonly used in the star structure.


4 software and hardware choices

Network operating system (network operation system-NOS) is the heart and soul of the network is able to control and manage network resources in a special operating system with general Computer operating system is different: it is to work in the Computer operating system, so Computer operating system to increase the network capacity required to operate. currently popular network operating system UNIX, Linux, Windows and Netware, and these applications have different levels, local area network applications can use Linux and Windows network operating system, and ultimately determined according to the Institute to determine the application environment. Links to free download http://www.hi138.com network hardware devices are reasonable choices will affect the operation of the network effect, the main hardware devices, including switches, servers and core router devices Select the device to be considered when the hardware devices to both advanced, but also has the scalability and technology maturity. layers of the type of switching equipment used mainly in non-managed, with a core layer only low the number of twisted pair port Gigabit Ethernet switch can be in the router, normally is used to achieve better performance of the broadband router to share Internet access, and not specifically to purchase enterprise-class router.


5 major network applications completed

In the vocational college, usually not very complex network applications, the most common is still the traditional file and device sharing set up local area network, the main achievement of the network applications should have a variety of authentication methods IIS Web site creation, configuration and management, IIS FTP site creation, configuration and management, electronic post office system, Invoicing and e-commerce software applications like content.


6 moderate network security management

Make network management easy to mistake the most talked about is a network, it has always stressed the importance of network security, but for the vocational college, the high level of network security system not only to spend huge amounts of equipment, software purchase costs, but also spend a huge maintenance and management costs are not necessary.

Network security is the end of the data, the data should keep the last one off, you can do for other security appropriate to relax, does not require the network simply does not allow any virus, hacking and other security threats may be as long as timely and quickly to deal with these threats, it can be. build a vocational school network, network security management is mainly controlled by the following technologies:

1) basic computer viruses and network intrusion / attack prevention,
2) the main network security protocols (VPN, SSL / TLS, PKI, IPSec, etc.)
3) EFS file encryption and PGP file encryption,
4) Windows firewall configuration
5) Windows Server IP security policy configuration,
6) IP and MAC address binding,
7) Windows Server Certificate Server installation and configuration.

To set up a good network, network planning and design of the network can determine the success or failure to meet the expected requirements and vocational college functions. Similarly, the network planning and design is good or bad determines the network is available. Links to free download http://www.hi138.com