The Design Of Fiber Ethernet Intelligent Splitter Based On FPGA

Nowadays, the business information has become very common. If some of the key equipment disabled, it will bring huge economic losses and impact the company’s reputation, and the losses can be difficult to estimate. Thus, high-availability network equipment is becoming increasingly important.The fiber ethernet intelligent splitter described in this article can provide high availability, it uses pure hardware to achieve backup processing. The front end connects to the external optical network, the intermediate connects primary and backup devices, and the back end connects to the LAN through the optical fiber or cable. Under normal circumstances, the splitter connects the primary device, when the primary device fails, switching to the backup, system can still work without interruption. In addition, it provides direct connect function, when the equipment need upgrade or repair, the system switch to direct connect state.then upgrade or repair equipment, ensuring the backbone network uninterrupted.The major work includes:1、According to engineer requirements, technical characteristics and capabilities needed of the network security systems, design a reliable and convenient intelligent ethernet splitter system framework.2、Design the hardware of fiber ethernet splitter, including FPGA circuit, Gigabit Ethernet, serial-parallel conversion, optical module circuit, system power supplies.3、Complete the FPGA module design and coding, simulate and debug.4、Complete prototype production, including hardware circuit debug and modify, ensure the system work well and meet the project requirements.5、Test prototype, optimize the system, including reduce system power consumption, optimize the procedure.The study of content is a hardware switched device of network security system, to some extent, it can improve system security, and easy maintenance.We can use the existing ethernet devices in the optical fiber line, reducing the costs of fiber to the desk.