以太网列车骨干网初运行研究及实现

Research and Implementation of Initial Operation of Ethernet Train Backbone

以太网列车骨干网(ETB)的初运行通过列车拓扑发现协议(TTDP)实现,列车骨干网节点(ETBN)是完成以太网列车骨干网(ETB)初运行、实现列车子网互联互通等功能的核心设备。文章主要研究了ETB初运行的过程,并在ETBN上实现了TTDP协议。通过试验表明,ETBN能够在列车拓扑发生变化时成功进行ETB初运行,并实现数据转发、跨编组访问等功能。

The initial operation of Ethernet train backnone(ETB)is realized through the train topology discovery protocol(TTDP).The ETB node(ETBN)is the core equipment to complete the initial operation of ETB and realize the interconnection and interworking of train subnets and other functions.This paper mainly studies the initial operation process of ETB,and implements TTDP protocol on ETBN.The test shows that ETBN can successfully carry out the initial operation of ETB when the train topology changes,and realize the functions of data forwarding,cross marshalling access and so on.