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 (101, 102, 103, 104), wherein said computing nodes (101, 102, 103, 104) are interconnected via one or more active components, wherein each computing node (101, 102, 103, 104) is connected to an active component via a communication line (301, 302, 303, 304), wherein at least some of the messages are exchanged by the computing nodes (101, 102, 103, 104) in the form of real-time messages, wherein defined CM, class measurement, time intervals of constant duration are assigned to the real-time messages, and wherein the bandwidth available for real-time messages within a CM time interval 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 (101, 103), wherein the time-controlled messages (401, 403; 401, 403, 404) are periodically transmitted by the computing nodes (101, 103) 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, 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 (101, 103), are phase-shifted to one another such that the time-controlled messages (401, 403; 401, 403, 404) from different computing nodes (101, 103) 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 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 (101, 103), wherein the time-controlled messages (401, 403; 401, 403, 404) are periodically transmitted by the computing nodes (101, 103) 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, 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 (101, 103), are phase-shifted to one another such that the time-controlled messages (401, 403; 401, 403, 404) from different computing nodes (101, 103) 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 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).