Preface: The large-scale theme publicity activity of "China Dream · Great Power Craftsman Chapter" was jointly carried out by the State Internet Information Office and the All China Federation of Trade Unions, with the participation of the central news website, local key news websites and major commercial websites. The purpose of the activity is to deeply study, publicize and implement Xi Jinping's thought of socialism with Chinese characteristics for a new era and the spirit of the 19th National Congress of the Communist Party of China, through interviews and reports on typical grassroots craftsmen, promote the spirit of model workers and craftsmen, and create a glorious social trend of labor and a spirit of dedication to work for excellence throughout the network and society.

IP address, like ID card, is the certificate of the interconnection of everything. With it, the interconnection of everything is no longer a dream. The new generation Internet protocol IPv6 undoubtedly solves this problem. It enables every grain of sand on the earth to have an IP address. How to quickly introduce IPv6 into the existing network has always been a difficult problem for major operators.

In the R&D process of China Unicom, the network technology expert team has made great efforts. Chen Lei, a senior network engineer of China Unicom Shenyang Branch, plays a key role.

How to quickly split a data tunnel that can accommodate the interconnection of tens of millions of intelligent terminals with almost no change to the existing network in Shenyang is a difficult problem that even equipment manufacturers are afraid of. After trying various configuration schemes, the colleagues had no idea, so they had to go to Chen Yu. "In fact, it's just two commands. It took Chen Yu 20 minutes. I didn't expect it to be so fast."

It takes 17 seconds to type two commands on the computer, but Chen Yu knows which two commands to use and at which link. This effort has accumulated for 17 years.

In 2001, Chen Lei graduated from Liaoning Posts and Telecommunications School and was assigned to Shenyang Unicom as a technician in the computer room. In order to improve his own quality, Chen Lei, a stubborn person, has successively studied the self-taught college and undergraduate courses in Jilin University and obtained a diploma. During the day, he worked hard. At night, when he woke up, he got up and did experiments. He is determined to use a large number of experiments to build up his own skills. After six months of hard work, Chen Yu's skills have improved rapidly. But at this time, Chen Yu suffers from acute pleurisy, which is so serious that he has water in his chest.

Thanks to his hard work day and night, Chen Yu won the top network certification CCIE-SP from Cisco in 2009. At that time, there were fewer than 2000 network practitioners with this certification in the world, and even fewer in China. Pavel, a Cisco expert, sighs that Chen Yu's technical skills and practical ability are very powerful.

In 2012, Chen Lei brought his "speed" to the extreme after a hidden danger investigation that may lead to a major network accident. "At that time, during the routine inspection, several LDP warnings on the core NMS alerted me."

LDP - label distribution protocol is an extremely critical communication protocol at the core level of the network. Its status intuitively reflects the on-off situation of a large number of important services carried in the network. "When you first see the LDP, it flashes intermittently. If you don't find the reason in time, once the LDP is completely down, it will affect the network use of millions of users in Shenyang, which is a disaster." For Chen Lei, This is a race against the clock, but finding the only cause of the problem from hundreds of possibilities is like looking for a needle in a haystack.

Brainstorming, eliminating layer by layer, quickly locking, and accurately repairing, Chen Yu finally fixed the crisis in 15 minutes. "In retrospect, it can be faster." In Chen Yu's mind, the speed is not nervous and flustered, but the accuracy and effectiveness of each action. This calm stems from superb skills, but also from the attitude of striving for perfection.

Each challenge is a milestone for Chen Yu to improve his technology. Zhang Hongyan, Chen Lei's leader, said: "In order to troubleshoot such obstacles, we must be familiar with the architecture of China Unicom's network, the characteristics of thousands of devices, and only Chen Lei can do it when we look at Shenyang Unicom."

Although the fault is eliminated, Chen Yu is lost in thought. "The data network management needs more experts. I can't go forward alone. To grow together with colleagues, the company's technical support can be more stable and secure."

In 2012, Shenyang Company established the "Chen Lei Communication Technology Innovation Studio" in the name of Chen Lei, and Chen Lei felt deeply responsible. He led a team of more than ten people to study hard, imparting his superb professional skills, learned knowledge and accumulated experience to everyone selflessly, so that the team's technical level rose to a higher level. Under his leadership, the company has emerged a group of technical experts and network experts, and become a sophisticated network maintenance team that can fight and win at any time.

As a leader in team innovation, Chen Lei always takes the lead in all aspects from topic selection to online promotion. In the Innovation Studio, equal consultation is a system, and intense technical debate has become the norm. There is no originality here, only mass innovation. "I am not an authority, and no one's words can become the truth without a lot of experiments." Chen Yu's words shocked everyone and released fresh and unknown energy.

Since its establishment in 2012, the studio has published more than ten papers on network technology. The New Deployment Method of IPTV Based on Multicast Technology has greatly eased the traffic pressure on IPTV platform servers, and the platform that originally only supported 70000 users has soared to 140000, ensuring the normal use of 100000 IPTV users in Shenyang at that time, At the same time, this innovation has saved the company nearly 20 million yuan of investment costs. Chen Lei's studio has realized the enterprise's long cherished wish to reduce costs and increase efficiency, and has also become a gold lettered signboard of leading innovation in the eyes of front-end customer managers.

Chen Lei's technical department is the last barrier of the network. Challenges are everywhere, and emergencies happen at any time. In his wife's impression, Chen Yu often can't eat a full meal. "He has to deal with a phone call at work immediately."

From ordinary technicians to the mainstay of the Unicom network, Chen Yu has been going this way for 17 years. In the past 17 years, his technological innovations have brought huge economic and social benefits; He got rid of any fault of the network, and so far there is no problem that he cannot solve; He has brought out a young innovation team, and a group of technical backbones of Unicom with excellent technology and strong sense of responsibility are growing. "If you want to do a good job, you need to persevere. If you give up halfway, you will never stand at the top of the pyramid," Chen Yu said. (Zhang Manyu, a trainee reporter of China Youth Daily, China Youth Online)