Recently, the 28th/29th Academic Annual Conference of China Education and Scientific Research Computer Network CERNET, with the theme of "IPv6 Next Generation Internet: Key Technology Research and Development, Application Integration Innovation", was grandly opened in Fuzhou. Ruijie Networks was invited to attend the conference and delivered a keynote speech, sharing innovative technological applications such as colored light technology and digital twin technology, and demonstrating Ruijie Networks' breakthrough progress and practice in the construction of digital campuses in universities.

Relevant government department leaders, education industry experts, network technology experts and business representatives gathered in Fuzhou to discuss the research progress of key technologies such as next-generation Internet IPv6 and new campus informatization technologies, and jointly look forward to a new blueprint for digital campus construction.

Firmly choose Ethernet All-Optical, a "light" base that is truly suitable for digital campuses

Huang Zhen, general manager of the Higher Vocational Education Industry Department of Ruijie Networks, delivered a keynote speech entitled "Colored Light Illuminates a New Chapter of Park Network Digital Campus" . In Ruijie's view, the development of campus networks has gone through three stages. In the 1.0 era, wired networks developed rapidly; in the 2.0 era, wireless networks gradually developed and matured; in the 3.0 era, with the continuous enrichment of teaching scenarios, the demand for business access is getting higher and higher. How to meet the diverse teaching scenarios and assist teaching Reforming scientific research and improving teaching experience have become top priorities, and they have also put forward higher requirements for campus networks. In this context, establishing a “multi-service integrated all-optical network” has become a consensus in university network construction .

Relying on its profound technical accumulation and market insights, in 2020, Ruijie Networks innovatively proposed a representative solution for the Ethernet all-optical route— Simplified Ethernet All-Optical Solution 1.0 . This “different all-optical network” breaks the Regarding the traditional understanding of all-optical networks, through the innovative problem-solving ideas of optical fiber in the room + exclusive bandwidth + SDN , we can realize Ethernet all-optical networking and eliminate most weak current rooms. In 2021, the minimalist light 2.0 solution innovatively introduces colored light technology , and through a true two-layer architecture Ethernet all-optical network, it achieves completely passive convergence nodes and zero maintenance between weak currents . In 2022, the minimalist optical 3.0 solution inherits Ethernet colored light technology, integrates the wavelength division multiplexing technology of colored light with switches on the core side, brings a new hyper-converged product, and uses SDN technology to build a highly integrated , stable, reliable, flexible adaptation, simple operation and maintenance all-optical network.

Over the past three years, Ruijie’s minimalist Ethernet all-optical solution has continued to evolve. In paving this network "highway" for universities, Ruijie and its customers have gone through intense demonstrations and repeated experiments. Among them, one of the key considerations is: What standard should we choose to build an all-optical network?

Ruijie's decision-making process is driven by customer needs and has undergone careful consideration. There are two main factors to consider. One is the maturity of the agreement and supply chain . It is expected that by 2025, 800G Ethernet will achieve large-scale commercial use. According to IDC data forecast, China's commercial Ethernet switching chip market size will reach approximately 17.14 billion yuan in 2025. It can be seen from the data that the Ethernet standard has reached sufficient maturity and is still at a critical node of rapid development. The second is the friendliness of Ethernet for business support . With the explosion of high-performance services, high-demand scenarios such as all-wireless campus networks, data centers, and IP-based audio and video will emerge in the future, and the Ethernet standard has good support for high-performance services. Based on the important consideration of the above factors, Ruijie unswervingly chose the Ethernet standard.

From the advent of Minimalist Light version 1.0 to the innovation of Version 3.0, the Minimalist Ethernet all-optical solution has been widely verified and recognized in the practice of more than 2,000 customers in education, medical and other industries.

Breakthrough colored light technology builds a high-bandwidth campus network with passive middle layer

In the era of Campus Network 3.0, Ruijie continues to make efforts in three major directions: simple connection, high experience, and high security in campus networks. Colored optical technology is an optical network communication technology implemented using wavelength division multiplexing (WDM). Ruijie has noticed the characteristics of high bandwidth, low latency and passive intermediate equipment of colored optical technology , and has made breakthroughs through repeated explorations and breakthroughs. , and finally innovatively applied colored light technology on a large scale in the campus network.

In traditional optical communication applications, one optical fiber can only carry one channel of optical carrier signals. Once the amount of business information is large, a large number of optical fibers need to be laid, which poses great challenges to wiring space and cost. Colored optical technology divides the band with the lowest propagation loss into 18 channels for transmission and reception in units of 20nm . It can transmit different business signals through one optical fiber, increasing the transmission efficiency by 8 times .

Ruijie's minimalist optical transparent aggregation solution uses colored light technology and uses passive equipment such as transparent aggregation and super-aggregation modules to help the aggregation nodes become completely passive, greatly improving transmission efficiency while reducing wiring between the central computer room and each building. cost. The deployment of the colored light solution of Minimal Light 3.0 can completely realize the passive power between buildings and floors , while saving the IT room on the floor, helping the school maximize the use of space, and effectively solve the problem of nowhere to install aggregation equipment and troublesome management of intermediate nodes. , building a passive high-bandwidth campus network in the middle layer . Different from the limited light splitting and bandwidth of the POL solution, the colored optical solution is a point-to-point exclusive mode, ensuring that the access side has exclusive access to 1:1 Gigabit/10G bandwidth to meet high-performance business requirements.

Ruijie Networks is continuously pushing the wheel of colored optical technology forward, allowing single fibers to carry more data communications. At the same time, Ruijie Networks is conducting in-depth research on innovative and unique two-way transmission modes, and is committed to making campus network construction more intensive and more efficient. High-speed development.

Innovative technologies build a high-experience, high-security campus network

In addition to bringing breakthrough colored light technology, Huang Zhen also demonstrated three high-experience innovations brought by digital twin technology to campus Wi-Fi in his keynote speech .

Ruijie WIS network twin roaming trajectory playback function brings a "good solution" to problems such as "it is difficult to trace back after an abnormality occurs in the wireless network". The roaming trajectory playback function can play back the roaming trajectory in the form of terminal movement trajectory animation on the floor plan. It can intuitively see which AP the terminal with network abnormality is connected to, and accurately troubleshoot the problem. The key indicators of the terminal's forward and backward movement trajectories, real-time signal strength, and roaming switching are clear. The error of the specific location where roaming occurs does not exceed two meters, which can solve 80% of the network quality degradation problems caused by roaming on the existing network .

Ruijie Wireless AP’s smart antenna positioning technology enables APs to perceive each other and measure distances. Users only need to manually confirm the initial three AP positions, and all remaining AP positions will be automatically calibrated to generate the relative positions of surrounding APs and a two-dimensional view, saving more than 80% of implementation costs. Help customers better plan the layout and coverage of wireless networks, improve network service quality, and improve the experience of key terminals.

At the same time, with the support of AI algorithms , the relative position model between APs is more accurate. When the equipment is moved to replace new APs, IT staff can update with one click and calculate the latest point distribution, making maintenance easier.

In terms of network security, Ruijie is committed to building a campus network with higher security protection capabilities and more comprehensive detection and defense capabilities. Taking Shanghai Maritime University as an example, Ruijie designed the overall plan and architecture for the school’s “Special Mining Trojan Remediation Project.” Use traffic detection and firewalls and other related equipment to link threat intelligence to identify the school's north-south mining traffic ; use network equipment to conduct Sflow sampling to identify the school's east-west mining traffic ; achieving accurate and comprehensive detection of mining Trojans. At the same time, based on network + security linkage, after mining traffic is discovered, the traffic link between the poisoned host and the mining pool is immediately blocked, achieving rapid and effective isolation and blocking.

For more than 20 years, Ruijie has relied on its technological accumulation in the education market to get to where it is today. The relationship between Ruijie and higher education customers is more like "teachers and students." While deeply exploring the higher education scene to creatively solve customer problems, Ruijie is also growing based on customer trust and co-creation. Today, Ruijie has worked side by side with more than 2,600 colleges and universities , writing the digital transformation of education in every corner of the campus. In the future, under the conditions of digital transformation, Ruijie will still focus on the construction of digital campuses, continue to provide new campus informatization technologies and easy-to-use solutions for the high-quality development of higher education, and write a new chapter for the construction of digital campuses.