Method for redundant message transmission in an industrial communication network, in which - at least one communication device comprises at least a first and a second transmission and reception unit (101-104) that each have an interface for a network connection of the industrial communication network and are connected to a coupling element of the communication device, - the transmission and reception units have an associated signal processing unit of the communication device that sends messages that are to be sent in redundant form by the communication device in duplicated form from the transmission and reception units and detects messages received in redundant form from the transmission and reception units on the communication device, - messages that are redundant with respect to one another are denoted by a common duplicate identifier, - the at least one communication device is a switch or a bridge, characterized in that - the industrial communication network has an arbitrarily meshed network topology, wherein the communication network comprises multiple paths, routed via separate switches or bridges and coupling sections, between two network nodes (202-203, 205, 208, 211-214) in each case, - mutually independent paths are ascertained for a communication link that is redundant at least in sections between the two network nodes within the industrial communication network, wherein the mutually independent paths comprise separate network nodes of a single communication network, - messages with duplicate identifiers are interchanged between the transmission and reception units of the communication device in accordance with forwarding rules that correspond to the ascertained paths. - at least one communication device comprises at least a first and a second transmission and reception unit (101-104) that each have an interface for a network connection of the industrial communication network and are connected to a coupling element of the communication device, - the transmission and reception units have an associated signal processing unit of the communication device that sends messages that are to be sent in redundant form by the communication device in duplicated form from the transmission and reception units and detects messages received in redundant form from the transmission and reception units on the communication device, - messages that are redundant with respect to one another are denoted by a common duplicate identifier, - the at least one communication device is a switch or a bridge, - the industrial communication network has an arbitrarily meshed network topology, wherein the communication network comprises multiple paths, routed via separate switches or bridges and coupling sections, between two network nodes (202-203, 205, 208, 211-214) in each case, - mutually independent paths are ascertained for a communication link that is redundant at least in sections between the two network nodes within the industrial communication network, wherein the mutually independent paths comprise separate network nodes of a single communication network, - messages with duplicate identifiers are interchanged between the transmission and reception units of the communication device in accordance with forwarding rules that correspond to the ascertained paths. <EOS>