数字化变电站网络性能的测试方法研究

Ethernet switch test based on WinPcap and WinSNMP

针对数字化变电站中以太网络交换机的测试需求,制作了基于WinPcap和WinSNMP的SWITCHTEST软件测试包。使用WinPcap,在高精度时间间隔中向交换机发送模拟网络报文并且回收,通过比较收发报文而判断交换机的性能。使用WinSNMP,可以对交换机进行网络监控管理,对交换机进行基本性能测试:吞吐量、时延、帧丢失率、拥塞;高级性能测试:MAC地址容量、RSTP恢复、广播风暴、VLAN、ARP欺骗、SNTP对时;网络管理协议测试:SNMP、RMON、TRAP、IGMP Snooping、GMRP。由以上各项测试可以得到以太网络交换机的性能参数,测试结果自动生成WORD报告和实时曲线,对于提高电力信息以太网络的安全可靠运行有重要参考意义。说明了使用WinPcap和WinSNMP可以较好地分析以太网络交换机性能。

The performance and protocol tests of intelligent switch are very important. In this paper, Ethemet switch test software packet based on WinPcap and WinSNMP was described. Using WinPeap, it can send simulation network messages to and receive simulation network messages from switch in high precision time interval, by comparing the messages the switch performance can be judged. Using WinSNMP, network monitor and management of switch can be done. Some basic performance tests, for example, throughput, latency, frame loss rate and congestion; some advanced performance tests, for example, MAC address capacity, RSTP recovery time, broadcast storms, VLAN, ARP spoofing and SNTP time synchronization; some network management protocol tests, for example, SNMP, RMON, TRAP, IGMP Snooping, GMRP. Ethemet switch performance parameters can be obtained by the above tests. The test results can be automatically generated in WORD report and real-time curve. These experiments are important to improve the security and reliability of power information network in substation. Ethemet switch performance parameters can be analysed by WinPcap and WinSNMP software packets.