Network Structure of Education Metropolitan Area Network
![]()
Typical Education Metropolitan Area Network
This solution divides the entire metropolitan area network into three layers according to the particularities of the management business structure and the distribution of traffic in the education industry: core backbone layer (primary backbone), convergence backbone layer (secondary backbone), and campus access layer .
The core backbone layer is located in the network center of the Municipal Education Commission. It bears all the traffic after aggregation and some city schools. It is the only outlet of the entire network to CERNET and an important outlet of INTERNET. It is also the management center of the metropolitan area network. The switching equipment is recommended to use the core routing switch DCRS-7515 with carrier-grade reliability. Because the network center of the municipal education committee is generally far away from the district and county education committee, the connection between them usually depends on the 100 / 1000M broadband network or 2M provided by the operator. n * 2M) WAN link implementation.
The convergence backbone layer is located in the network center of the district / county education committee. It is responsible for the forwarding of traffic from the district / county school to the city's core layer, CERNET, and some Internet traffic, and local forwarding of internal traffic within the district / county. This is the convergence point of routes, traffic, and links in the district and county. The switching equipment still recommends the use of carrier-grade reliability core routing switch DCRS-7508.
Although the campus access layer has lower reliability requirements for network equipment than the upper two layers, the internal situation of the campus network is different, and there are many ways to interconnect with the upper layer network, resulting in the most complicated part of the metropolitan area network design. For schools with relatively mature infrastructure and a large number of students, DCRS-7500 series routing switches can be used as the backbone equipment, and other schools can use DCRS-6512 or DCRS-5526 according to their own circumstances. For schools that are more constrained by economic conditions and have less demand for network information, consider using a "blue box" (DCR-2708 / 16) that integrates routers and switches to eliminate special switching equipment. When connecting to the convergence backbone layer, we must fully consider the needs of local teaching and the business services that operators can provide. In direct fiber connection, 10 / 100M broadband network, DDN dedicated line, ADSL and dial-up network suitable for remote schools, etc. Choose among the mainstream methods, and connect the education committees at all levels and schools in all jurisdictions into a private dedicated education network through VLAN technology, VPN technology, point-to-point method, and dial-up remote access method. At the same time, the DCFW-1800 firewall is placed in the center of the metropolitan area network, and the DCFW-1800 firewall is placed at the convergence backbone layer and some schools connected to the Internet external network to provide a comprehensive protection system for the entire education metropolitan area network.
Education Metropolitan Area Network Center-Education Bureau Network Center
![]()
Education Metropolitan Area Network Center
The function of the core layer is mainly to achieve optimized transmission between backbone networks. The core layer design tasks usually focus on redundancy, reliability and high-speed transmission. The control functions of the network and various applications of the network should be implemented on the core layer as little as possible. The core layer has always been regarded as the ultimate bearer and convergent of traffic, so the design of the core layer and the requirements for network equipment are very strict.
The Information Center of the Education Bureau configures a high-end routing switch as the core switch, which connects network application servers such as domain servers, database servers, VOD on-demand servers, WEB, FTP, and large-capacity disk array servers to store various audio and video resources. And configure the network management server to monitor and manage the company's network equipment and teaching equipment. The information center is equipped with four video and audio encoding devices, which can encode four analog video and audio signals (cameras, DVDs, etc.) into digital signals in real time and transmit them to all schools or designated schools. And you can monitor the images uploaded by the designated school class in real time through the computer or TV wall to complete the function of the video conference.
The access layer of the metropolitan area network of education-different types of campus networks of primary and secondary schools and related institutions have different access methods, which are mainly determined by the number of campus information points. The main types are: Layer 3 switches are connected to the local telecom convergence point through a 100 megabit link; Blue Box is connected to a local telecom convergence point through a 100 megabit link.
Technical Support Hotline 010-82707711 ~ 6
For more information, please refer to the website of China Digital Network http: //
Typical Education Metropolitan Area Network
This solution divides the entire metropolitan area network into three layers according to the particularities of the management business structure and the distribution of traffic in the education industry: core backbone layer (primary backbone), convergence backbone layer (secondary backbone), and campus access layer .
The core backbone layer is located in the network center of the Municipal Education Commission. It bears all the traffic after aggregation and some city schools. It is the only outlet of the entire network to CERNET and an important outlet of INTERNET. It is also the management center of the metropolitan area network. The switching equipment is recommended to use the core routing switch DCRS-7515 with carrier-grade reliability. Because the network center of the municipal education committee is generally far away from the district and county education committee, the connection between them usually depends on the 100 / 1000M broadband network or 2M provided by the operator. n * 2M) WAN link implementation.
The convergence backbone layer is located in the network center of the district / county education committee. It is responsible for the forwarding of traffic from the district / county school to the city's core layer, CERNET, and some Internet traffic, and local forwarding of internal traffic within the district / county. This is the convergence point of routes, traffic, and links in the district and county. The switching equipment still recommends the use of carrier-grade reliability core routing switch DCRS-7508.
Although the campus access layer has lower reliability requirements for network equipment than the upper two layers, the internal situation of the campus network is different, and there are many ways to interconnect with the upper layer network, resulting in the most complicated part of the metropolitan area network design. For schools with relatively mature infrastructure and a large number of students, DCRS-7500 series routing switches can be used as the backbone equipment, and other schools can use DCRS-6512 or DCRS-5526 according to their own circumstances. For schools that are more constrained by economic conditions and have less demand for network information, consider using a "blue box" (DCR-2708 / 16) that integrates routers and switches to eliminate special switching equipment. When connecting to the convergence backbone layer, we must fully consider the needs of local teaching and the business services that operators can provide. In direct fiber connection, 10 / 100M broadband network, DDN dedicated line, ADSL and dial-up network suitable for remote schools, etc. Choose among the mainstream methods, and connect the education committees at all levels and schools in all jurisdictions into a private dedicated education network through VLAN technology, VPN technology, point-to-point method, and dial-up remote access method. At the same time, the DCFW-1800 firewall is placed in the center of the metropolitan area network, and the DCFW-1800 firewall is placed at the convergence backbone layer and some schools connected to the Internet external network to provide a comprehensive protection system for the entire education metropolitan area network.
Education Metropolitan Area Network Center-Education Bureau Network Center
Education Metropolitan Area Network Center
The function of the core layer is mainly to achieve optimized transmission between backbone networks. The core layer design tasks usually focus on redundancy, reliability and high-speed transmission. The control functions of the network and various applications of the network should be implemented on the core layer as little as possible. The core layer has always been regarded as the ultimate bearer and convergent of traffic, so the design of the core layer and the requirements for network equipment are very strict.
The Information Center of the Education Bureau configures a high-end routing switch as the core switch, which connects network application servers such as domain servers, database servers, VOD on-demand servers, WEB, FTP, and large-capacity disk array servers to store various audio and video resources. And configure the network management server to monitor and manage the company's network equipment and teaching equipment. The information center is equipped with four video and audio encoding devices, which can encode four analog video and audio signals (cameras, DVDs, etc.) into digital signals in real time and transmit them to all schools or designated schools. And you can monitor the images uploaded by the designated school class in real time through the computer or TV wall to complete the function of the video conference.
The access layer of the metropolitan area network of education-different types of campus networks of primary and secondary schools and related institutions have different access methods, which are mainly determined by the number of campus information points. The main types are: Layer 3 switches are connected to the local telecom convergence point through a 100 megabit link; Blue Box is connected to a local telecom convergence point through a 100 megabit link.
Technical Support Hotline 010-82707711 ~ 6
For more information, please refer to the website of China Digital Network http: //
Sichuan Soper Science & Technilogy Co., Ltd , https://www.Soper.com.cn