生成树实例在西气东输一线SCADA系统中的应用

摘要

通过对西气东输一线站场监控和数据采集(SCADA)系统的局域网结构和冗余性特点进行分析,找出了系统网络环路形成的原因和解决方法.在局域网Ci8co交换机上,应用生成树实例对交换机配置进行修改,在不改变网络结构和冗余性的同时,使交换机能够对网络环路进行自动阻塞.结果表明,应用生成树实例后,网络环路问题得到有效解决,设备间通信质量和设备工作性能得到提升,SCADA系统局域网的稳定性和可靠性也相应提高.%Through analyzing the structure and redundancy features of LAN of the SCADA in the station site of West-East Natural Gas line I, the forming reasons of the system network loop and solutions are found. On the Cisco switches in LAN, by adopting the spanning-tree instance, the configuration of switches is modified; thus the switches can block the network loop automatically while the structure and redundancy of the network are unchanged. The result indicates that after applying the spanning-tree instance, the problem of network loop is solved effectively, the communication quality and performance of devices are enhanced, and the stability and reliability of LAN of the SCADA are improved.