Schools are places to educate people, and websites should be student-centered. In the new era, it is necessary to build the campus website into a new field of students' development. Open up a new classroom for students' life and study.
First of all, it should become a new classroom for students to learn. There are two meanings here: first, classroom learning can improve the learning effect with the help and extension of the network; The second is to set up a second class here to enrich students' learning methods and contents and realize the coordination and unity of extracurricular learning.
Secondly, it should be a window for students to communicate through forums, mailboxes and even chat rooms. Traditionally, communication between people must meet the conditions of unifying time and space. With the development of science and technology, the communication between people has developed into the network field. Modern education attaches great importance to obtaining information through communication. Providing conditions for students to communicate with each other is a work that cannot be ignored. One of the most ideal and advanced communication conditions is the network. Students can learn knowledge, increase their talents, promote understanding, establish friendship, form the concept of right and wrong, vent their psychological depression, adjust the nervous system tension and so on. Some advantages of online communication are incomparable to real communication. Especially for students who are often in a weak position, through online communication, they can easily experience the happiness of being in an equal position. However, we must also realize that students still have a long way to go to realize online communication, and this road is also full of obstacles. These obstacles include the defects of the network itself and the overall restrictions of the elderly on students. Because of these factors, the establishment of campus network may be the best way for students to communicate more widely, freely and actively online.
Thirdly, it should be a square for students to show their individuality. It is true that personality education is one of the main aspects in which eastern education lags behind western education. The reason is nothing more than that our students always live in neat requirements, meticulous care, a thousand people's environment and lack of change. When students come into contact with the network, it is like letting students walk out of a narrow space and come to a wide square, where they can put down their pursuit and publicize their own personality.
But also become a carrier for students to participate in social practice. For example, students can use campus websites and their own mailboxes to collect opinions and answers to some social problems, and then strengthen sorting and draw conclusions.
Network can also be a link of cooperation between students; A platform for observing society; A bridge between school education and family education; A showcase for students' talents.
Of course, in order to make these beautiful wishes come true, it is necessary to leave enough opportunities and space for students when establishing the website. It is possible to achieve this goal by designing according to this idea. If the guiding ideology of website construction is not student-oriented, these goals cannot be achieved at all. After consulting a large number of campus websites, I think that in recent years, like Beijing No.4 Middle School, with the development of network technology and Internet and the rapid growth of CERNET (China Education and Research Network), more than 400 colleges and universities across the country have built campus networks and connected to CERNET. The construction of campus network has become a symbol of the strength and development level of colleges and universities. The scale and level of our school are expanding and improving rapidly. It has become an inevitable choice to build an advanced and practical campus network, realize the rapid transmission of information inside and outside the school, make teaching, scientific research and management step into informationization and networking, and improve the level and efficiency of running a school. To this end, the college decided to invest in the construction of campus network.
First, the overall goal of campus network construction
1, information resources * * *.
Through the campus network, we can realize the rapid exchange of information within the school, between the school and domestic and foreign countries, realize the sharing of resources, make teachers and students know the latest trends of science and technology and higher education at home and abroad in time, and promote the development of teaching, scientific research and management.
2. Library retrieval and borrowing automation.
By reforming the original book retrieval system and building an electronic library, the utilization rate of school books and materials can be improved; Make full use of off-campus books and materials to realize remote computer book retrieval and borrowing.
3. Informatization and automation of school management system.
Relying on the campus network, the corresponding interactive application software platform is constructed to realize the automation of teaching, scientific research, personnel, students, finance, logistics and archives management, realize the networking of statistical monitoring, and improve the management efficiency and level. Realize students' online enrollment, online talent recruitment and online job hunting.
4. Establish computer network aided teaching system.
Establish a computer-aided teaching system based on network, such as CAI courseware development, video on demand, online question bank, answering questions and correcting homework, and realize the modernization of teaching methods.
5, relying on the campus network, wide area network to carry out distance teaching.
6. Create the college website, make it an important window for external publicity, let the world know about us, and improve the college's popularity.
7. Provide a relaxed, open and easy-to-use network environment for teachers and students, let the network touch daily work and life, and give full play to the maximum utility of the network.
8. According to the plan of the Ministry of Education and Shaanxi Province, the main line of China Education and Research Network will soon extend to Hanzhong, and the campus network of our college will be planned and constructed according to the standard of Hanzhong main node.
Second, the principles of campus network construction
1, systematic.
Campus network is a complex system, and the construction of campus network is undoubtedly a complex system engineering. Network planning, design, hardware construction, software construction, network use and expansion are all viewed from a system perspective. Any work is based on the overall situation and long-term, reflecting the overall optimization.
2. Advanced and practical.
Campus network planning and design should adopt advanced technology as far as possible, and at the same time, it should also take into account the maturity and practicability of technology. The rapid development of computer network technology, no matter how advanced the technology is, will undoubtedly form a situation that will be eliminated soon after its completion. And blindly pursuing advanced technology, regardless of the maturity of technology, will have great risks. Because the advanced nature is at the expense of a large amount of capital investment. On the other hand, it is of no practical significance to blindly pursue the advanced, even divorced from one's actual needs.
3. Openness and development.
The planning and design of the system should adopt open technology, open structure, open system components and open user interface with good compatibility, so as to facilitate the maintenance, expansion and upgrading of the network and communication with the outside world. We should not only meet the needs of users now and in the next five years, but also consider the smooth transition from low cost to more advanced technology in the future.
4. Safety.
The system has multi-level security control means and perfect security management system to prevent hackers from attacking and destroying it.
5. Ease of use and reliability.
The system requires simple design, clear hierarchy, excellent performance of hardware and software equipment, perfect function, stable and reliable operation and easy maintenance.
6. Economy.
The system design and capital investment are reasonable, which shows a good cost performance. Try to do more with less money.
7. Unified planning and step-by-step implementation.
School funds are very limited, so it is unrealistic and unnecessary to spend a large sum of money at one time to make network construction in one step. Because network construction itself is not only hardware construction, but also software construction and practical application, which needs to be completed step by step according to the growth of demand. On the other hand, the whole network system must be continuously expanded and upgraded with the development of network technology, which requires constant capital investment. However, some key infrastructure must be put in place in one step, such as integrated wiring system, main network equipment, servers, operating system software and so on.
Third, technology choice.
There is one TON24-port switch, and the computer in the school administrative office has been connected to the switch through the super-five twisted-pair cable. Located in the comprehensive building
2. Electronic reading room network: there is a CD tower server and 46 computers, which form a network through switches and super five twisted pairs. Connected to the administrative office network through optical cable. It is located on the fourth floor of the library.
3. Teaching network of Computer Teaching Department: * * * 4 computer rooms, each with a Inspur server and 50 computers. The first computer room consists of an independent network through three 24-port switches. The second, third and fourth computer rooms form independent networks through HUB respectively. Located on the 5th and 6th floors of the complex. Each computer room has laid two super-category 5 twisted-pair cables to the main control room of the school network, but they are not connected.
4. Unicom's 2M broadband network is connected to the server through optical cable.
Second, the campus network expansion requirements
1, to expand a central server, it is required to realize the function of the core server of the backbone network, and it is planned to share the network resources (text, courseware, email, BBS) of the whole school on this server. The original server is designed as a backup and WEB server.
After the expansion, the campus network adopts a three-level switching network, adding a core switch and several secondary and tertiary switches. Replace the hubs of the original three computer rooms in the Computer Teaching Department with switches, and each switch in the four computer rooms is connected to the network main control room through twisted pair (a new twisted pair is laid in each computer room). VLAN division and virtual network configuration manage the whole school network.
3. Rearrange the overall network framework on the basis of the original network. Gigabit Ethernet is adopted in the backbone system, and 100M switching rate is adopted in the branch system. Take the newly laid-out network as the main structure, and connect all the original networks seamlessly.
4. After the expansion of the network, the original "management information system", "e-commerce simulation operating system" and other systems and original data of the school must be reinstalled on the new server before they can be used normally.
5. All equipment should be purchased from formal channels, and provide the factory certificate and enjoy the manufacturer's warranty.
Third, the expansion demand of home LAN
1, laying network cables for the residents in the family area, and leaving an information port at the location required by the residents.
2. The family room is set on the13 floor, and two 24-port switches are stacked. 12, 14 and 15 layers are also provided with a 48-port switch, and the switches are connected by multimode optical fibers. The switch is connected to all users through over five twisted pairs.
3. The computer room in the family area is connected with the school network center through a single-mode optical cable suspended by a steel cable. All problems (such as optical cable crossing, how to fix optical cable, neighborhood disputes, etc. ) The problems in the process of laying optical cables will be solved by the winning company! See the attached figure for the route.
4. Realize the campus network informationization and broadband.
5. All equipment should be purchased from formal channels, and provide the factory certificate and enjoy the manufacturer's warranty. The wiring system shall fully comply with the five standards and ISO, EIA/TIA-568B standards.
Four. Participation requirements
1. Companies participating in project bidding should have various network construction qualifications.
2. The registered capital is not less than RMB 500,000.
3. The successful bidder shall provide the following engineering services:
(1), installation and debugging of all hardware equipment and software system.
(2) Cable laying: including the installation of trunking and other auxiliary materials, the drawing and laying of cables, and the punching of network cables through walls;
(3) Installation and connection of information sockets;
(4)UTP test: UTP test between each information socket and distribution frame in each floor and room, including open circuit, short circuit, eccentricity, connectivity test, attenuation, crosstalk and loop resistance characteristic test.
(5) Testing (attenuation value), welding and testing of optical cables
(6) provide a complete set of documents; Network cable label, information socket comparison table of each room and UTP test report; Schematic diagram of distribution of information points and optical cable information points in each building, etc.
4. The winning company is responsible for the after-sales maintenance and warranty of this project, and regularly visits the school for network maintenance. In case of network failure, they should arrive at the site for maintenance within the time agreed in the contract.
5. The winning company is responsible for training the school network management personnel to use switches, firewalls and other equipment free of charge, and should provide free training for the manufacturers of these equipment.
6. After the completion of the whole project, the school will form an acceptance team to accept the whole equipment and wiring system. The acceptance contents include: the working condition of all equipment, network performance, wiring acceptance according to TST-67 standard, visual inspection of wiring, and whether the wiring system meets the five standards. Party B (the winning bidder) is responsible for providing relevant materials such as EIA/TIA-568 standard and TST-67 acceptance standard for the school's reference. At the time of acceptance, Party B shall provide acceptance application report, acceptance test outline, acceptance test report, documents and other materials. If the equipment or performance does not meet the requirements of the contract, Party B must replace it unconditionally.
Cable layout diagram (total length 500 meters)
List of new equipment for campus network of Lianyungang Finance and Economics School
Product name, model, quantity and total unit price
1, server
HPserverML370G3
Server Intel Xeon 2.4g * 2/512m (catch)1024m (DDR ECC)1.
HP server hard disk 36.4 GB WIE ULTRA3CISSI 1 0,000 RPM hard disk (1inch) 3
Hp monitor HP5062A 1
8490sx Gigabit Optical Network Card 1
Subtotal 1
2. Core switch
Digital China DCRS-65 12 1
Gigabit module MRS-65 12-2GB2
Gigabit module GBIC-SX3
Gigabit module GBIC-LX 1
Subtotal 2
3, the bottom switch
Digital China DCS-365248 port +2 slot10/100/10004
Digital China DCS-3628s24 Port +3 Slot10/100/10002
1 gigabit multimode fiber module MS-3600- 1GSC 1
1 gigabit single-mode optical fiber module MS-3600- 1GLC 1
Dual-port 100 m multimode optical fiber module MS-3600-2MFC5
Management module MS-3600-M 1
Stacking module MS-3600-S2
Digital China DCS- 10243
Digital China DCS- 10 166
Network management software Liinkmanager-30-250n 1
Digital China Network Card DCN-530TX 10
Subtotal 3
4. Others
digital China
Hardware firewall DCFW- 1800-UL 1
Monitor SONYG220 1
UPS power supply
APC3KV(4-hour Panasonic battery, including 8 batteries, including battery cabinet) 1
Subtotal 4
total
Second, the network wiring project list
Serial number name brand model unit quantity unit price amount
1 super five-class twisted-pair DATACOMMDC5ECLA08 box 25
2 super category 5 1 bit information panel and information socket module DATACOMMDCJKB0 1
DCOUD0 1 set 150
3 1.2M 19 inch standard cabinet data communication 22U 1
4 closet 9 udacomm 9u Table 4
5 outdoor six-core single-mode optical cable Shanghai Sanxin HoogyxtW6D9 15m 600
6 outdoor four-core multimode optical cable Shanghai Sanxin HOOGYXTW6D625 250
7ST adapter data communication 24
8ST/PC Single Mode Tail Fiber Shanghai Sanxin HHOOSM Pair 6
9ST/PC multimode pigtail Shanghai Sanxin HHOOSM pair 8
10 rack type 12 port optical fiber junction box DATACOMM unit 4
1 1 rack 24-port optical fiber junction box DATACOMM 1
12 super five-crystal data communication RJ45 600
13 batches of trunking and other auxiliary materials 1
14 installation and debugging fee batch 1
total
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