Ruijie attended the CERNET Annual Conference and used its color light technology to depict a new blueprint for digital campuses

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

Leaders of relevant government departments, education industry experts, network technology experts and corporate representatives gathered in this blessed state to discuss the research progress of key technologies such as the next generation Internet IPv6 and new campus information technologies, and jointly look forward to a new blueprint for the construction of a digital campus.

Firmly choose Ethernet All-Optical, the "optical" 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 "Colorful Light Illuminates the Campus Network and Writes a New Chapter for Digital Campuses" . 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 matured; in the 3.0 era, as teaching scenarios continue to enrich, the demand for service access is getting higher and higher. How to meet the diverse teaching scenarios, help teaching and scientific research reforms, and improve the teaching experience has become a top priority, and it has also put forward higher requirements for campus networks. In this context, establishing a "multi-service integrated all-optical network" has become a consensus in the network construction of colleges and universities .

With profound technical accumulation and market insight, in 2020, Ruijie Networks innovatively proposed a representative solution for the Ethernet all-optical route - the Minimalist Ethernet All-Optical Solution 1.0 . This "different all-optical network" breaks the traditional perception of all-optical networks. Through the innovative problem-solving ideas of fiber optic entering the room + exclusive bandwidth + SDN , it realizes Ethernet all-optical networking and eliminates most weak-current rooms. In 2021, the Minimalist Optical 2.0 solution innovatively introduced color optical technology . Through a true two-layer Ethernet all-optical network, it achieved completely passive aggregation nodes and zero maintenance in weak-current rooms . In 2022, the Minimalist Optical 3.0 solution inherited the Ethernet color optical technology, integrating the wavelength division multiplexing technology of color optical with switches on the core side, bringing a new hyper-aggregation product, and with the help of SDN technology, built a highly integrated, stable and reliable, flexible and adaptable, and simple to operate and maintain all-optical network.

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

Ruijie's decision-making process was driven by customer demand and was also carefully considered. Two major factors were considered. One was the maturity of the protocol and supply chain . It is expected that by 2025, 800G Ethernet will be commercially available on a large scale. According to IDC data, the market size of commercial Ethernet switching chips in China will reach approximately RMB 17.14 billion in 2025. From the data, it can be seen that the Ethernet standard has sufficient maturity and is still at a critical node of rapid development. The second is the friendliness of Ethernet for business support . With the emergence of high-performance demand 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 considerations of the above factors, Ruijie unswervingly chose the Ethernet standard.

From the launch of Minimalist Optical 1.0 to the innovation of Version 3.0, the Minimalist Ethernet All-Optical Solution has been widely verified and recognized by more than 2,000 customers in multiple industries such as education and medical care.

Breakthrough color optical technology builds a middle layer passive high bandwidth campus network

In the era of campus network 3.0, Ruijie continues to focus on the three major directions of simple connection, high experience and high security of campus network . Color optical technology is an optical network communication technology implemented by wavelength division multiplexing (WDM). Ruijie noticed the high bandwidth, low latency and passive intermediate equipment of color optical technology . Through repeated exploration and breakthroughs, it finally innovatively applied color optical technology on a large scale in campus networks.

In traditional optical communication applications, one optical fiber can only carry one channel of optical carrier signal. 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. Color optical technology divides the band with the lowest propagation loss into 20nm units, and divides it into 18 channels for transmission and reception . Different business signals can be transmitted through one optical fiber, and the transmission efficiency is increased by 8 times .

Ruijie's minimalist optical transparent aggregation solution uses color light technology, through transparent aggregation, super aggregation modules and other passive devices, to help aggregation nodes become completely passive, greatly improve transmission efficiency, and reduce the cost of wiring between the central computer room and each building. The deployment of the minimalist optical 3.0 color light solution can completely realize the passive weak current between buildings and floors , while saving IT computer rooms on floors, helping schools maximize the use of space, effectively solving the problem of nowhere to install aggregation equipment and troublesome management of intermediate nodes , and building a passive high-bandwidth campus network in the middle layer . Unlike the splitting and bandwidth-limited POL solution, the color light solution is a point-to-point exclusive mode, ensuring that the access side has exclusive 1:1 Gigabit/10 Gigabit bandwidth to meet high-performance business needs.

Ruijie Networks is continuously pushing the wheel of color optical technology forward, allowing single fiber to carry more data communications. At the same time, it is conducting in-depth research on innovative and unique two-way transmission modes, and is committed to making campus network construction develop in a more intensive and faster direction.

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

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

Ruijie WIS network twin roaming trajectory playback function has brought a "solution" to the problem of "difficult to trace back after wireless network anomalies occur". The roaming trajectory playback function can replay the roaming trajectory in the form of terminal movement trajectory animation on the plane map, and can intuitively see which AP the terminal with network anomalies is connected to, and accurately identify the problem. The terminal's forward and backward movement trajectory, real-time signal strength, and roaming switching key indicators are clear, and the specific location error of roaming does not exceed two meters, which can solve 80% of the network quality degradation problems caused by roaming in the existing network .

Ruijie wireless AP's intelligent antenna positioning technology enables mutual perception and distance measurement between APs. Users only need to manually confirm the initial three AP positions, and all remaining AP positions will be automatically calibrated and positioned to generate the relative positions of surrounding APs and a two-dimensional view, saving more than 80% of implementation costs. It helps customers better plan the layout and coverage of wireless networks, improve network service quality, and enhance 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 and replaced with a new AP, IT personnel can update it 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 has designed an overall solution and architecture for the school's "Mining Trojan Rectification Project". By using traffic detection and firewalls and other related equipment to link threat intelligence, the school's north-south mining traffic is identified; using network equipment for Sflow sampling, the school's east-west mining traffic is identified; and accurate and comprehensive detection of mining Trojans is achieved. At the same time, based on network + security linkage, after the mining traffic is discovered, the traffic link between the poisoned host and the mining pool is blocked as soon as possible, achieving rapid and effective isolation and blocking.

Over the past 20 years, Ruijie has relied on its technological accumulation in the education market to come this far. The relationship between Ruijie and its higher education customers is more like that of "teachers and students." While creatively solving customer problems in higher education scenarios, Ruijie is also growing based on customer trust and co-creation. As of 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 continue to focus on the construction of digital campuses, continue to provide new campus information technology and easy-to-use solutions for the high-quality development of higher education, and write a new chapter in the construction of digital campuses.