Automatic generation method for train communication network online topology

Abstract

The invention discloses an automatic generation method for a train communication network online topology. The method mainly includes: enabling each managerial device in a train communication network to acquire topological information of all neighboring devices of each managerial device in a broadcast message manner; and acquiring topological information of the whole train communication network based on the topological information of all the neighboring devices acquired by each managerial device. According to the method, managerial devices in the train communication network acquire the topological information of all the neighboring devices based in a broadcast message manner, namely, the topological information of all the neighboring devices are acquired by transmitting and receiving broadcast messages, and the broadcast messages can be forwarded by non-managerial devices, so that topological information of devices connected through the non-managerial devices can be acquired when the topological information of the whole train communication network is acquired based on the topological information of all neighboring devices of each managerial device. Therefore, the complete train communication network online topology can be discovered.

Description

technical field [0001] The invention belongs to the technical field of train network management, in particular to a method for automatically generating train network online topology. Background technique [0002] Train Communication Network (TCN, Train Communication Network), referred to as train network, is an important part of a train and one of the core technologies of a modern train. [0003] In the train communication network, the network devices involved are divided into management devices and non-management devices. Among them, management devices include GWM (Gateway Module, gateway module), VCM (Vehicle Control Module, train control module), ERM ( Event Record Module, event recording module), IDD (Intelligence Display Device, smart display), I / O (Input / Output, input / output) module, managed switch, wireless device, etc. Unmanaged devices include unmanaged switches and repeaters. In order to manage the train communication network, network maintenance personnel need t...

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: Since LLDP packets are multicast packets, some unmanaged devices (such as unmanaged switches) will not forward this type of The information of the neighbor managed devices connected to the above unmanaged devices makes it impossible to discover the complete online topology information of the train network

Images