Looking at the market, the development of automation and car networking is the hottest topic in the automotive industry today. As the demand for bandwidth, flexibility and cost-effectiveness in the automotive sector continues to rise, car Ethernet networks are beginning to emerge. According to Electronic Design, since its release in the 1970s, Ethernet has evolved into the world's most popular and reliable network technology, and is now deployed in in-vehicle networks for on-board diagnostic systems and in-vehicle infotainment applications (In -Vehicle Infotainment; IVI) system, and connection remote sensors. Since the in-vehicle system is safe for driving, it requires more bandwidth to cope with the huge data transmission, and networks such as CAN and FlexRay cannot provide such speed. Therefore, today, self-driving and connectivity have become the focus of market development, and high bandwidth has also been set off. Car Ethernet network import boom. In order to meet the increasing demand for data transmission in the development of self-driving vehicles in the market, Ethernet can provide data transmission rates of up to 100Mb/s, and the IEEE 802.3 working group responsible for researching vehicle Ethernet networks has also moved toward higher-speed Gb-level standards. developing. The main competitor of the car Ethernet network is Media Oriented Systems Transport (MOST) technology. MOST can provide 100~150Mb/s transmission speed, which is mainly used in information entertainment and multimedia systems. In comparison, Ethernet networks still have greater application potential, in addition to being built for bandwidth, having more potential vendors in the market, and providing greater scalability, in newer technologies. Single-pair unshielded twisted pair (UTP) cables are used, making it a lighter and more cost-effective solution. According to Broadcom's estimates, the car's Ethernet network can reduce the online cost by 80% and the cable weight by 30%. In addition to cost considerations, Ethernet networks also have a higher level of compatibility when connecting vehicles to intelligent infrastructure. Combining these advantages, Ethernet networks have the opportunity to play a leading role in future V2X car networking. It is worth noting that Ethernet networks have higher compatibility with existing infrastructure and network technologies, which means that new challenges in network security will emerge. CAN-based network security products focus on protecting the bus system from being affected by problematic electronic control units (ECUs). Although Ethernet networks will improve this aspect, they use physical switch network architecture and virtualization. The practice of network segmentation will bring new problems, and further consideration should be given to the specific conditions of the network such as architecture, communication protocols and applications. The flexibility and modular architecture of Ethernet allows network architects and security consultants to deliver proprietary security solutions that meet their needs, and this will be one of the keys to attracting automotive security solutions. From a long-term perspective, the car-based network is rapidly advancing toward the goal set by the automobile industry, so it has the opportunity to gradually replace other vehicle network technologies and become the star of the future in the car networking technology. Therefore, the follow-up development is worth waiting for. . Easy Electronic Technology Co.,Ltd , https://www.yxpcelectronicgroups.com