Project Background Basic science is the cornerstone of the entire natural science, the forefront of the development of modern science, and the "thought engine" of technological invention. The level of basic scientific research and teaching has become one of the important standards for measuring the strength of a university. The building of the Basic Science Experimental Center of the University of Science and Technology of China provides a better guarantee for the development of the school's basic teaching and scientific research. The largest building of the University of Science and Technology of China at present, the 1-9th floor of the building is a micro-scale national laboratory (chip), and the 9th floor and above are the scientific research and office institutions of some departments. The building of this experiment center is a multi-functional science experiment building integrating teaching, experiment, science and technology display, academic report, etc. It has a novel design, unique shape, exquisite decoration and modern architectural features. The main building has a physical laboratory on the 3rd to 18th floors. , Chemical laboratory, analytical laboratory and office, top-level society planetarium; group rooms are equipped with science and technology exhibition hall, multimedia classroom, building automatic control, TV monitoring, sewage treatment, central air conditioning, and other systems. While possessing advanced hardware facilities, it is also urgent to build a network platform that satisfies multimedia information such as teaching, voice, graphics, and images in the building. client needs The basic science experiment center building network constructed this time is a part of the entire campus network. It is a computer park network based on computers, serving teaching and research and internal and external communications. In order to ensure the unimpeded building network, a gigabit network is required to connect to the campus backbone and a hundred megabytes to the desktop. Finally, a comprehensive digital education network that meets the needs of multimedia information such as teaching, voice, graphics and images, as well as comprehensive scientific research information transmission and processing needs. In short, the network requires practicality, high speed, security, economy, stability, reliability, good scalability, and easy maintenance. Design According to the design principles of the campus LAN and the specific needs of the basic science experiment center, Netgear carried out the basic science experiment center LAN based on the principles of advancement, openness, scalability, security, reliability, and manageability. Repeated demonstrations have finally realized a network design plan that truly fits the user's actual needs, and provides the following LAN network topology diagram: The building's network has access to more than a thousand information points, and it is a medium-sized system. The network topology is a typical star-shaped campus LAN. The network equipment is divided into 2 levels. Level 1 adopts the 12-port manageable Gigabit switch GSM712 of American Netgear to connect to the campus backbone through the optical fiber, and then to the third layer and the ninth layer through the gigabit copper twisted pair \ 15 layer 2 equipment-2 ports Gigabit copper 1000T + 24 ports 10 / 100M network management stackable 10 / 100M switch FSM726S connected. The 12-port manageable Gigabit switch GSM712 used in the convergence layer of this solution has 10 copper Gigabit ports and is equipped with 2 expandable GBIC slots to connect different network segments or departments and servers to the Gigabit backbone. As a high-performance gigabit switch, GSM712 provides 24Gbps switching capability, supports 802.1x port authentication, and combines other upper-level authentication protocols such as EAP, RADIUS and other standards to define advanced security features such as user identification, centralized authentication, and dynamic key management. It also supports a rich set of software features such as SNMP, IGMP monitoring, link aggregation, 802.1Q VLAN, and 802.3X broadcast storm control. By introducing this switching core group, the backbone of the network is upgraded to a gigabit three-layer wire-speed network that eliminates network bottlenecks, greatly improving the switching capabilities of the network, and an efficient intelligent engine provides network security and reliable operation for the building network. Its intuitive browsing interface is convenient for management and fully complies with the principle of easy and simple maintenance. In addition, the use of standard IEEE 802.3ad link aggregation (Trunking) redundancy technology ensures that the network core has no single point of failure. The access layer switch selects FSM726S switch of American Netgear. FSM726S is a stackable layer 2 switch with network management. It can stack up to 6 devices. It provides 144 10 / 100Mbps and 12 gigabit copper or fiber ports. 12.8Gbps backplane switching capability. In this solution, a group of 6 stacks and a group of 3 stacks are used on the 3rd floor; 3 groups of 6 stacks per group are used on the 9th floor; and 3 groups of 6 stacks per group are also used on the 15th floor. The function greatly reduces the port of the aggregation layer switch, thereby saving engineering costs. The product has good stability, high backplane bandwidth, and non-blocking design, ensuring smooth data exchange and ensuring the normal operation of the building network. The switch is also very easy to use. The graphical WEB setting simplifies network management settings and future maintenance. All ports support Auto Uplink ™ technology, so you do n’t have to think too much about the production of twisted pair in network construction. The backbone GSM712 Gigabit network management switch is used in combination with the FSM726S stackable network management switch and Gigabit server to complete the networking. Its high-performance non-blocking Gigabit switching capability ensures that the building network bandwidth accelerates the access speed while ensuring various The smooth operation of network applications improves the user's efficiency in using the network. Program features Due to the use of stackable switches, it effectively saves users' investment and ensures that users can design and select advanced network equipment, technologies and solutions as much as possible within the scope of funds, which improves the cost performance of the project. Conclusion Previously, some teaching buildings of the University of Science and Technology of China also used the same type of products, the number reached more than 100. The school decided to use the US Netgear solution again, fully reflecting the school ’s trust and recognition of the US Netgear. NETGEAR The company's campus network solution has many unique advantages. It has a series of complete, rich and comprehensive network solutions, and the system is mature and reliable. At the same time, it also has the characteristics of low cost, which is in line with the actual situation of China's current primary and secondary school campus network construction. 30Pcs Shoe Wet Wipe,30Pcs Shoe Kleenex Wipes,30Pcs Shoe Wet Tissue Wipes,30Pcs Shoe Wetwipe DONGYANG COMEXA SANITARY PRODUCTDS LTD.,CO , http://www.comexawipes.com
The network is also easy to upgrade. By introducing the GSM712 switch, the traditional shared network is upgraded to a gigabit line-speed network that eliminates network bottlenecks, greatly improving the network's switching capabilities. Its intelligent engine effectively provides network security and reliable operation. All switches provided in this case support 802.1x port opening authentication protocol to ensure reliable and safe network operation. The use of standard link aggregation (TRUNK) redundancy technology ensures no single point of failure and automatic and reliable data communication. The network management is very simple. The built-in WEB, SNMP, and RMON capabilities of the network equipment can achieve effective and perfect network monitoring. And maintenance management.