User background
Luocun Town Central Primary School in Nanhai City, Guangdong Province is a full-time primary school sponsored by the Luocun Town Government. The school currently has 22 teaching classes and 1034 students. Its "civilized, united, diligent and disciplined" school style has established a good image in the society. In 1997, it was rated as a first-class school in Nanhai City, and now a standardized, standardized, high-quality new school is gradually formed.
Project Background
With the economic development, governments at all levels in China have continuously increased their investment in education; the rapid development of computer technology has caused the prices of corresponding products to continue to fall; at the same time, people's awareness and economic strength have continued to increase. A large number of computers have entered schools and homes, making it completely feasible for computers to be used in educational information management and information services.
In particular, Nanhai District plans to develop into an information area. With the strong support of the government, the infrastructure has been basically completed and the conditions are ripe. In order to further develop education, Luocun Central Primary School makes full use of online materials to improve the work of teachers and students. For the efficiency of learning, it is necessary to build a campus network with complete functions and advanced technology.
User needs
This case is an important part of the implementation of education informatization in Nanhai District of Foshan, mainly to complete the network construction of the campus network of Luocun Town Central Primary School. The goal is to connect various information resources on different campus campuses through high-performance network equipment to form The intranet system inside the campus campus is externally connected to the WAN through a routing device.
The latest high-performance Gigabit Ethernet technology is required to fully meet the backbone bandwidth requirements of application development. At the same time, each branch node switches to the desktop with 100M, providing sufficient desktop bandwidth for services such as file transfer and multimedia applications. Build a broadband IP campus network, on this IP basic network, build a high-speed information application platform, provide a large environment for external access to the campus network, and realize large-flow broadband integrated business applications in the campus network.
The network design uses a hierarchical architecture. It is logically divided into two layers: core layer and access layer. Physically, it is divided into central switching—> secondary switching for floor access. The core layer makes full use of routing switching technology to provide high-speed and reliable data transmission, and the edge access layer uses Ethernet switching technology. The network adopts a star connection structure, with the user network computer room as the central point, and the fiber (or gigabit copper) star is led from the computer room to the sub distribution room to form the gigabit Ethernet backbone.
solution
For the description and demand analysis of Luocun Town Central Primary School, NETGEAR provides a complete set of high-performance network solutions. The network structure diagram is as follows:
NETGEAR computer network solution is an optimized solution. After fully considering the distribution of data streams in the user network, the data center serves as the central node of the core layer, providing data exchange with the external network and data exchange between internal nodes. The network structure of this solution is simple, which not only meets the user's requirements for its core network, but also avoids the complexity caused by the mesh structure and the ring structure, which simplifies the future network operation and maintenance.
The core layer uses GSM7324 as the core switch. The GSM7324 routing switch has the characteristics of high bandwidth, non-blocking, excellent management capabilities and reliable multimedia support, which can meet the needs of future networks to a great extent. It has 24 10/100 / 1000Mbps copper cable RJ-45 ports (all ports support auto-negotiation and MDI / MDIX cable adaptation), 4 SFP slot ports and the last 4 10/100 / 1000M copper cable RJ- 45-end shared use. It has powerful performance, such as: wire-speed IPv4 routing, each switch supports up to 512 routing entries, VRRP (Virtual Routing Redundancy Protocol), ICMP, RIP v1 and RIP v2 routing information protocol, OSPF v2 shortest path Priority dynamic routing protocol, and also has DHCP / BOOTP relay capabilities. It provides Layer 2 switching: port bundling (link aggregation), broadcast storm control, extensive VLAN virtual local area network support (based on port, based on 802.1Q Tag, based on layer 3 protocol, etc.), IGMP snooping, and rapid spanning tree protocol Wait. The interconnection between the core layer and the access layer uses Gigabit as the backbone. The core switch in the network management center directly uses advanced Gigabit Ethernet technology to connect the two secondary switches. At the same time, some of the higher access layer switches and core switches are used. Trunking technology realizes the binding of two physical links, and the bandwidth between the switches reaches full duplex 4 Gbps, which not only improves the bandwidth of the network backbone line, but also ensures the reliability of the network.
The edge access layer uses all NETGEAR FSM726S series switches to connect to each desktop workstation.
NETGEAR FSM726S series switch is an Ethernet switch that can flexibly expand with your network. FSM726S has a 12.8Gbps switching backplane and a forwarding throughput of 9.5Mpps. Its main functions are: 24 10 / 100M auto-sensing RJ-45 front ports, fully stackable and manageable-SNMP, RMON, VLAN, QoS and port trunking, etc. Equipped with 2 GBIC expansion slots Gigabit fiber is connected. There are 2 rear stacking ports, with a dedicated stacking cable, to achieve a true stack of up to 6 units, never blocking, automatic protocol and Auto Uplink â„¢ to select the correct link. Its simple and intuitive browsing management interface is convenient for observation and control: 802.1Q Vlan, 802.1D STP, Link Trunk, Port Monitor, Cos, and it also has rich management functions: Command Line / Telnet / Web / SNMP / MIB. Therefore, FSM series switches have the capability of wire-speed forwarding of all ports. At the same time, it is simple and easy to use, and flexible network management methods, fully expand the network in line with the standard.
This solution makes the network have higher performance and scalability
The network backbone uses Gigabit Ethernet, advanced technology, ample bandwidth, and easy maintenance, which can maximize the speed of network access and response;
The network topology has a hierarchical structure, which is basically the user architecture of the center floor, so that when a part of the network changes, the workload of the jumper can be reduced as much as possible without adjusting the entire wiring system;
Dynamic routing protocols such as RIP1 and RIP2 can be selected within the user LAN. When the network structure changes, the work of adjusting the routing table can be minimized, and the load can be balanced among multiple routes.
High reliability of the network
NETGEAR GSM series Layer 3 switches mean time between failures (MTBF): 166,600 hours to ensure the normal operation of the core layer equipment and the reliability of the network.
Network flexibility The selected network equipment supports routing protocols such as RIPI / II and IGMP, PIM multicast protocols. It has excellent QoS support and effectively supports applications such as video on demand, online shopping, and voice communication;
All devices support variable-length subnet mask (VLSM) technology for IP address planning in the network, which not only saves IP addresses, but also reduces the size of the routing table and reduces the burden on routing cards and routers;
Network security
The selected devices all support the division of multiple VLANs, including static and dynamic, which can not only control the broadcast between different departments, but also prevent unauthorized users from accessing critical data;
The network is easy to manage and maintain
NETGEAR's network products all provide advanced network management platforms to manage the entire network system and correctly analyze the status of network equipment.
Why choose NETGEAR
NETGEAR's campus network solution has many unique advantages. It has a series of complete, rich and comprehensive network solutions
The solution fully embodies the characteristics in terms of products, technology, solution integration, etc .:
In terms of product selection and configuration, NETGEAR's GSM7324 series 1000Mbpsc three-layer switch is used as the user's core switch. The core switch supports high-speed layer 3 switching. The core layer to the edge access layer uses Gigabit fiber connection, and from the edge switch to The core layer switches all support quality of service QoS to ensure the end-to-end service quality of the network.
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