The beautiful “Ludao†Xiamen City is one of the first four special economic zones in China to implement the policy of opening up to the outside world. One of the five comprehensive reform and reform zones for the development of open countries (the “New Special Zoneâ€), “China (Fujian) Freedom One of the three zones of the Trade Pilot Zone. At the same time, Xiamen also attaches great importance to education. As of the end of 2012, the city has 116 general secondary schools with 163,300 students, 287 primary schools, 223,500 students, 612 kindergartens, and 114,200 people in the park. . In order to solve the need for schools to rationally access education networks and equipment needs to be upgraded, the Xiamen Municipal Education Bureau plans to upgrade the educational metropolitan area network by tuning the fiber access scheme and upgrading network equipment.
In order to meet the growth of the educational network business system bandwidth and access scale in a few years, Xiamen needs to build an advanced, forward-looking and highly reliable IP metropolitan area network as a unified backbone communication platform, so that the education sector can target broadband. Demand for multimedia applications and other rapid development of a series of new education information business. First of all, it is necessary to unify the accesses currently distributed in all primary and secondary schools in Xiamen to the education bureau of the district to build an independent, safe and reliable metropolitan area network export; the second proposal is to extend the backbone network nodes to the district education bureau, in the district education bureaus. One backbone router is placed separately and connected to the Municipal Education Bureau by means of dual links to prevent single point of failure. The access method is very flexible. The entire network has multiple redundant paths to ensure network reliability, stability, and scalability. Finally, the core of the backbone network: the Municipal Education Bureau, the backbone routers of each district are uniformly configured and managed by the Municipal Education Bureau, and the security of the schools is connected at the same time, effectively preventing the spread of viruses or attacks between different schools, effectively protecting The entire education system business is safe and smooth.
The relevant leaders of Xiamen City attach great importance to the construction of the education metropolitan area network. After many times invited Xiamen network technology experts to demonstrate the construction plan, they chose Huawei to undertake the design and construction of the education metropolitan area network, using multi-level stars. The network architecture optimizes the original ring network architecture. The Municipal Education Bureau takes dual routers as the core and deploys core switches and security gateways at the same time. The education backbone network will be extended to the district, and a remote core router NE40E will be placed in each of the six district education bureaus. The dual-gigabit link will be used to interconnect with the newly deployed core router NE40E of the Municipal Education Bureau. The same double-gigabit interconnection between the offices can protect the link bandwidth while preventing single point of failure.
The scheme adopts hierarchical design and draws on the industry-leading SDN software to define the network. It has advanced forward-looking, business agility and high reliability.
The forward-looking architecture supports the high-speed core backbone network of SDN. The backbone equipment adopts Huawei's high-performance NE40E router. The core nodes of the network use 10 Gigabit link connections to provide strong service bearer and capacity expansion for the future. At the same time, the NE40E router adopts a fully programmable architecture, which can quickly support the new protocol through a custom forwarding process. The powerful service expansion capability can meet the needs of the rapid development of the education metropolitan area network in the next 5-10 years.
l Business agile, refined control and high-performance network: Firstly, with the development of network technology, the trend of unified carrying of voice, data, video and other services through the network is more and more obvious, and in practical applications, it needs to be different. The NE40E router has a complete QoS scheduling mechanism: the refined management and control policy supports the H-QoS five-level scheduling mechanism for the access side, diversifying and differentiated to meet different levels of users on the access side. Business needs. It has realized the network bandwidth, priority refinement control of different education schools, and the bandwidth and priority refinement control of different services in the same school. Secondly, the diversification of educational network nodes makes ARP tables and routing tables continue to expand. At the same time, there are often network peaks in the backbone network, and there are phenomena such as cards and densities. The NE40E router provides powerful routing and forwarding capabilities with its advanced architecture. Any single board supports 200ms packet buffer, and does not lose packets when bursting traffic, which ensures that the network of education users is unblocked during peak hours and there is no drop condition;
l Highly reliable, providing a sustainable education information service: Eliminate single points of failure through a fully redundant structure including device redundancy, link redundancy, and route redundancy, ensuring high reliability of the overall wide area backbone network Sex. The core NE40E router adopts hardware BFD and complete FRR technology to achieve end-to-end fault detection and complete switching within 200ms. The backbone core switch S12700 uses CSS2 hardware cluster technology to realize network virtualization to simplify network management. At the same time, through 1+N backup technology, as long as one master control works normally, the entire core can be guaranteed to work normally, and some devices are down. In this case, the education business can also be guaranteed to operate 24/7, and the user side is not aware of the network failure.
"Education is not a passive water, it is not a wood without a foundation." The Xiamen Municipal Education Bureau's construction of the education metropolitan area network project is to promote the development of education. After the completion of the project, more than 1,000 primary and secondary schools covered it. It will fully enjoy the advantages brought by the advanced network, and realize a number of teaching management applications such as teaching office automation, student status management system, interactive classroom, online on-demand, online communication, online test evaluation, online communication, and e-book package. The completion of the Xiamen Education Metropolitan Area Network not only enriched the teaching methods, but also promoted the sharing of teaching resources, and the teaching effect and quality were greatly improved.
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