Power Over Ethernet Management Applications And Implementation On The Stacking Switch

With the rapid development of WLAN, Power over Ethernet(POE) has become a necessary technique using by network equipment. According to statistics, currently there are billions of device ports worldwide which are capable of providing POE for smart AP, network cameras, IP phones and other powered devices through ethernet. This has greatly decreased the complexity of the various types of terminals wiring and improved the access convenience for terminals. However, how to manage the sheer volume of POE ports efficiently and easily has become an urgent issue for the manufacture of switch equipment. In addition, the popularity of virtual switching technology makes the distributed management of network devices becomes more universal. The combination of virtual switching technology and POE technology can further facilitate the management of POE. Based on this background, this thesis investigate and solve a number of issues regarding the management of POE in switch system.In this thesis, the management thchnology of POE has been specifically investigated and analyzed on different switch and applied in different mode of switch. The achievements fulfilled in this thesis are as follows:(1) A brief description of the current development of the POE application worldwide. Design and implement the application of POE in access layer switches running in stand-alone mode.(2) A brief description of the virtual switching technology is proposed in chapter two. Design and implement the applications of POE management in the virtual switch. The same and different points when POE management module used in MPU and LPU have been analyzed in detail respectively. Where a detailed analysis of POE application module similarities and differences between MPU and LPU, to achieve a POE module from the LPU to MPU communication and analyzes the significance of its communication.(3) By analyzing the existed POE power management algorithms and the current drawbacks of POE power supply in real application scenarios, a power management algorithm aiming at core devices stand-alone mode which can enhance the efficiency of power supplement is presented.(4) The implement of the design aefomentioned based on Vxworks embedded system and the completion of testing and validation of the former design on the actual switch.(5) Summaring a couple of experience from the former research and design schemes which can be referenced by the realization of rapid movement from stand-alone mode to the stacking mode for software application modules.The results achieved by the software designed in this thesis has been successfully used on a couple of switchs manufactured by a particular communication equipment company and marketed.