Method for time synchronization in an Ethernet-based network, wherein the network contains at least a master network subscriber, a slave network subscriber (200, 201) and a further slave network subscriber (200, 202), wherein the method comprises the following steps: - the master network subscriber sending a first telegram, wherein the slave network subscriber (200, 201) receives the first telegram at a first reception time value of a local system time of the slave network subscriber (200, 201) and stores the first reception time value, wherein the further slave network subscriber (200, 202) receives the first telegram at a further first reception time value of a local system time of the further slave network subscriber (200, 202) and stores the further first reception time value; - the master network subscriber reading the first reception time value and the further first reception time value; - the master network subscriber sending a second telegram, wherein the slave network subscriber (200, 201) receives the second telegram at a second reception time value of the local system time of the slave network subscriber (200, 201) and stores the second reception time value, wherein the further slave network subscriber (200, 202) receives the second telegram at a further second reception time value of the local system time of the further slave network subscriber (200, 202) and stores the further second reception time value; - the master network subscriber reading the second reception time value and the further second reception time value; - the master network subscriber calculating a speed parameter of the local system time of the slave network subscriber (200, 201) using the first reception time value and the second reception time value, wherein the master network subscriber calculates a further speed parameter of the local system time of the further slave network subscriber (200, 202) from the further reception time values (521, 522); - transmitting the speed parameter to the slave network subscriber (200, 201) and the further speed parameter to the further slave network subscriber (200, 202). - the master network subscriber sending a first telegram, wherein the slave network subscriber (200, 201) receives the first telegram at a first reception time value of a local system time of the slave network subscriber (200, 201) and stores the first reception time value, wherein the further slave network subscriber (200, 202) receives the first telegram at a further first reception time value of a local system time of the further slave network subscriber (200, 202) and stores the further first reception time value; wherein the slave network subscriber (200, 201) receives the first telegram at a first reception time value of a local system time of the slave network subscriber (200, 201) and stores the first reception time value, wherein the further slave network subscriber (200, 202) receives the first telegram at a further first reception time value of a local system time of the further slave network subscriber (200, 202) and stores the further first reception time value; - the master network subscriber reading the first reception time value and the further first reception time value; - the master network subscriber sending a second telegram, wherein the slave network subscriber (200, 201) receives the second telegram at a second reception time value of the local system time of the slave network subscriber (200, 201) and stores the second reception time value, wherein the further slave network subscriber (200, 202) receives the second telegram at a further second reception time value of the local system time of the further slave network subscriber (200, 202) and stores the further second reception time value; wherein the slave network subscriber (200, 201) receives the second telegram at a second reception time value of the local system time of the slave network subscriber (200, 201) and stores the second reception time value, wherein the further slave network subscriber (200, 202) receives the second telegram at a further second reception time value of the local system time of the further slave network subscriber (200, 202) and stores the further second reception time value; - the master network subscriber reading the second reception time value and the further second reception time value; - the master network subscriber calculating a speed parameter of the local system time of the slave network subscriber (200, 201) using the first reception time value and the second reception time value, wherein the master network subscriber calculates a further speed parameter of the local system time of the further slave network subscriber (200, 202) from the further reception time values (521, 522); - transmitting the speed parameter to the slave network subscriber (200, 201) and the further speed parameter to the further slave network subscriber (200, 202).