A method for transmitting messages in a computer network based on the IEEE 802.1Q standard, wherein the computer network consists of a plurality of computing nodes , wherein said computing nodes are interconnected via one or more active components , wherein each computing node is connected to an active component via a communication line , wherein at least some of the messages are exchanged by the computing nodes in the form of real-time messages , wherein defined CM, class measurement, time intervals (CMI) of constant duration are assigned to the real-time messages , and wherein the bandwidth available for real-time messages within a CM time interval (CMI) is limited to a defined real-time bandwidth, characterized in that furthermore, time-controlled messages (401, 403; 401, 403, 404) are transmitted from computing nodes , wherein the time-controlled messages (401, 403; 401, 403, 404) are periodically transmitted by the computing nodes in accordance with a defined schedule, wherein the period duration (P; P1, P2) of the time-controlled messages (401, 403; 401, 403, 404) is a function of the duration of the CM time intervals (CMI), wherein the transmission times of time-controlled messages (401, 403; 401, 403, 404), which are transmitted to the same active component from different computing nodes , are phase-shifted to one another such that the time-controlled messages (401, 403; 401, 403, 404) from different computing nodes are received in the active component at different times (601, 602; 601, 602, 602'), that is in non-overlapping intervals, and wherein the sum of the bandwidths occupied by time-controlled messages (401, 403; 401, 403, 404) and by real-time messages within a CM time interval (CMI) does not exceed the value for the real-time bandwidth, and wherein at least some of the real-time messages of a certain class, namely the service class A according to IEEE 802.1Q-2011, are time-controlled messages (401, 403; 401, 403, 404). furthermore, time-controlled messages (401, 403; 401, 403, 404) are transmitted from computing nodes , wherein the time-controlled messages (401, 403; 401, 403, 404) are periodically transmitted by the computing nodes in accordance with a defined schedule, wherein the period duration (P; P1, P2) of the time-controlled messages (401, 403; 401, 403, 404) is a function of the duration of the CM time intervals (CMI), wherein the transmission times of time-controlled messages (401, 403; 401, 403, 404), which are transmitted to the same active component from different computing nodes , are phase-shifted to one another such that the time-controlled messages (401, 403; 401, 403, 404) from different computing nodes are received in the active component at different times (601, 602; 601, 602, 602'), that is in non-overlapping intervals, and wherein the sum of the bandwidths occupied by time-controlled messages (401, 403; 401, 403, 404) and by real-time messages within a CM time interval (CMI) does not exceed the value for the real-time bandwidth, and wherein at least some of the real-time messages of a certain class, namely the service class A according to IEEE 802.1Q-2011, are time-controlled messages (401, 403; 401, 403, 404). <EOS>