User background Wuhan University has a full range of disciplines and obvious characteristics, covering 11 categories including philosophy, economics, law, education, literature, history, science, engineering, agriculture, medicine and management. The school has 30 colleges and six affiliated hospitals in the six departments of humanities, social sciences, science, engineering, information science and medicine. There are 20 disciplines listed as the second batch of key construction projects of the National "211 Project". The school has successively participated in scientific research and engineering construction of national key engineering projects such as the Three Gorges Project and the South-to-North Water Diversion Project, and has made important contributions to national construction and social progress. Project Background The construction of wireless network is conducive to the Wuhan University School of International Management to provide better services to students. For a large number of mobile terminals, flexible access to the network is very important. The use of various information on the national information network and the Internet through wireless networks to achieve resource sharing can provide mobile terminals with efficient connection methods. Therefore, the wireless network construction of the School of International Management of Wuhan University is a typical network facing the future of networking, informationization, and the development of multimedia integrated services. The network construction is to expand the wireless network on the original wired network of the School of International Management of Wuhan University. Wireless coverage is provided in the computerized room and some public corridors of the School of International Management, Wuhan University, so that students can connect to the network anytime, anywhere, and without restrictions. The Wuhan University School of International Management originally had a perfect network structure, and the new wireless network construction has good compatibility. There is no need to change any items within the Wuhan University School of International Management. The original network management system can be used to manage the wireless network . User needs It is required to realize the main project of the wireless network of the School of International Management of Wuhan University, and the need for wireless coverage; establish a perfect wireless network to provide students with a truly unrestricted Internet environment. At the same time, the network should be compatible with the original network management center of the School of International Management of Wuhan University to facilitate the maintenance of the normal operation of the network. Compatible with the original charging system of Wuhan University School of International Management, simplifying the network structure. And when wiring, there must be no damage to the decoration and walls of the School of International Management of Wuhan University. For network performance, users also have the following requirements: the network must be able to safely achieve the overall design goals of the network, and at the same time be easy to use, unified user interface, standard, strong expressive; easy to install and maintain, high network operation quality; good openness, It is easy to transplant, expand and popularize; in the selection of equipment, it must have a better performance-price ratio; keep a technological lead within a few years; network security meets relevant national standards. solution In response to the needs analysis of the School of International Management of Wuhan University, NETGEAR provides a complete set of high-performance network solutions. The network structure diagram is as follows: Overall network layout: The entire network is in a star topology. We choose the best place to place the wireless hotspot AP in the area where wireless coverage is required on each floor, and ensure the coverage of the wireless signal when placing. We strive to arrange the fewest points in the floor and maximize the coverage. The APs arranged on each floor are connected to the switch in the central computer room through super-five shielded twisted pair cables to achieve centralized management. Wireless coverage: As shown in the figure above, we arrange the wireless AP in a reasonable location. The wireless coverage of the arranged wireless AP is as far as possible without blind spots, and the transmission quality is guaranteed. In the overall design of the wireless network, we focused on the following issues: In the selection of wireless hotspot APs, the main equipment of the wireless network, the AP must be able to work for a long time; it has good compatibility, can be compatible with various wireless adapters, and it is best to support the current mainstream bandwidth of wireless transmission. It is important to ensure the stability and security of the data. So we chose NETGEAR 11M multi-function enterprise wireless LAN access point (AP)-ME103. It can provide secure enterprise-level functions at an economical price. This powerful access point product allows staff to continuously access school resources, e-mail, and the Internet at the industry standard 11Mbps rate. It is not only fully compatible with IEEE 802.11b (2.4 GHz), but also forward compatible with 802.11g, providing a future-oriented method for quickly establishing a new wireless network or expanding an existing Ethernet network. The wireless distributed system (WDS) feature of ME103 enables ME103 to support five working modes: conventional AP access, relay, point-to-point bridge, point-to-multipoint bridge, and client AP (simple bridge). The security features of ME103 include 802.1x authentication in EAP MD5, TLS and TTLS encryption modes, 128-bit encryption for dynamic key exchange in EAP TLS, TTLS and PEAP modes, WPA, 64 or 40 and 128 WEP Encrypted, unique MAC address authorized access function ensures that only legally authenticated users can access effective network resources. The management features of ME103 include that it can be configured and managed through WEB, and also supports SNMP MIB I and MIBII, which facilitates the centralized management of the user. The product provides a 10 / 100BaseT port that automatically recognizes the crossover of twisted pair cables for high-speed connection to a wired network, allowing users to easily share network resources at high speed. In addition, the network management stack 26-port 100M switch-FSM726S also participated in the network construction. FSM726S is a layer 2 managed switch, ideal for users who need network management. With 24 100M ports, 2 stacking ports, 2 fixed Gigabit ports and two expandable Gigabit fiber slots, it can support any size of SME network and provide up to 12 Gigabit ports. The switch provides two management interface options based on browser and command line. Management features include SNMP, RMON, VLAN, QoS, port trunking, spanning tree and port mirroring. All its ports have auto-negotiation and support Auto Uplink ™ technology. FSM726S can rack up to 6 units. For user convenience, a stacking cable supporting 2G traffic is also included. In the choice of wireless adapter, 11M wireless CardBus laptop card-MA521. It can easily access the Internet at a speed of 11Mbps from a laptop computer, and can obtain full mobility. Through the automatic speed reduction function, you can connect to the network at a distance of up to 300 feet. Automatically adjust the transmission power can extend battery life and reduce interference. The small antenna prevents the network card from bending. Thorough testing can ensure strong throughput performance and reliable working ability. The MA521 is configured to not only interoperate with other NETGEAR wireless products, but also be compatible with any notebook computer with a processor speed of more than 400 MHz. It also provides drivers for Windows ™ 98SE, Me, 2000, and XP. Why choose NETGEAR The increasingly updated network technology provides a broad development space for the special characteristics of networked operation, operation and services. NETGEAR's network products and technologies meet the following characteristics and can better meet the needs of colleges and universities. Network connectivity: Good connectivity between computers and other terminal devices is a basic requirement to be met. The network environment is to provide an environment for communication between computer devices that need to communicate in order to achieve a variety of network applications. Network reliability: Many existing networks not only need to realize data transmission during initial construction, but also must have sufficient redundancy and reliability of the network. Otherwise, once the network fails during operation, the system cannot resume work quickly. The consequence is the loss of students ’time, which affects the reputation and image of the college. NANTONG OUFEIYA IMP& EXP CO.,LTD , https://www.jsnantongoufeiya.com
Network security: Network security has very high requirements. The data transmitted in the local area network and the wide area network are very important information, so the data must be kept safe and confidential to prevent illegal eavesdropping and malicious destruction.
Network manageability: Good network management should pay attention to the advance investment of network management manpower and financial resources, and actively control the network, which can not only perform qualitative management, but also quantitatively analyze network traffic and understand network health.
Network scalability: Network construction is a very sensible choice to provide a good expansion interface for future development. As the scale of the college expands, the network expands and upgrades are inevitable problems.
Multimedia support of the network: Due to the maturity of multimedia technologies such as video conferencing, video on demand, and IP telephony, the data transmitted by the network is no longer a single data, and multimedia network transmission has become the trend of world network technology. Focusing on the future, there is a lot of demand for multimedia support on the network.
In addition to the above-mentioned excellent performance, American Netgear Co., Ltd. in Guangzhou in March 2004