Train Ethernet configuration method and system and rail vehicle

The embodiment of the invention provides a train Ethernet configuration method and system and a railway vehicle, and relates to the technical field of train control. The technical problem that in an existing scheme, Ethernet switching units in a train are multiple and complex in configuration is solved. The method comprises the steps that a management control unit implants configuration files into all switching units; the switching unit forms a network topology structure according to the configuration file; the following configuration is carried out according to the configuration file: each switching unit sets the connection state of each port one by one according to the configuration file; each switching unit sets a network address of the terminal equipment connected with each port one by one according to a configuration file; each switching unit performs virtual local area network division configuration according to a configuration file; the management control unit performs master-slave setting according to