为支持航天器嵌入式网络终端在研制过程中调试、测试及排故的需要,研究了基于SNMP的嵌入式终端状态管理系统的实现方法。在介绍了SNMP协议的原理以及工作环境的基础上,详细分析基于KSZ8851以太网控制器的嵌入式终端软件设计;在上位机采用WinSNMP、套接字以及多线程技术实现对航天器网络终端状态的管理与测试。系统测试结果表明,该系统可以有效地对信息终端进行全面监测与管理,工作稳定可靠,维护和使用方便,操作方法简单,具有一定的应用价值。 In order to support the need of debugging, testing and troubleshooting during the development of embedded network terminal in spacecraft, the implementation of embedded terminal state management system based on SNMP is studied. Based on introducing the principle of SNMP protocol and working environment, the software design of embedded terminal based on KSZ8851 Ethernet controller is analyzed in detail. On the host computer, WinSNMP, socket and multi-threading technology are used to realize the state of terminal Management and testing. The system test results show that the system can effectively monitor and manage the information terminals, which is stable and reliable, easy to maintain and use, easy to operate and has certain application value.