Method for monitoring a network (10, 25) provided for data transmission, consisting of a plurality of devices (12, 12b, 13, 14, 15, 29) connected to one another over fixedly prescribed signal transmission paths, for anomalies, wherein - one of the devices (12, 12b, 13, 14, 15, 29) is a master device (12, 12b) that has a counter (20, 27) and a trigger apparatus, by which a prescribed signal feature of a signal transmitted via the network (10, 25) is acquired, and - upon the acquisition of the signal feature, a master counter state, corresponding to a time of the acquisition, of the counter (20, 27) of the master device (12, 12b) is read, wherein - an evaluation apparatus determines, under predetermined anomaly-free conditions, a setpoint value of at least one network-specific parameter defined by a physical property of the network, and - a respective actual value of the at least one network-specific parameter (Pat) is determined by the evaluation apparatus from a difference between the read master counter state and a further counter state, and - an anomaly is indicated if a predetermined deviation criterion between the actual value and the setpoint value is met, characterized in that - a reference message or a corresponding reference signal is sent to the master device, which reference message contains a reference client counter state as information, - a reference master counter state from the master counter (20, 27) is used, - a master clock generator and a client clock generator are used, - a propagation time pattern of the signal in the network constitutes the at least one network-specific parameter and it is provided, for determining its actual value, for - one of the devices (12, 13, 14, 15, 29) of the network to be a client device that likewise has a counter and a trigger apparatus, - the signal to be transmitted via the network both to the master device and to the client device, and - the prescribed signal feature to be acquired by the trigger apparatus of the client device and a client counter state, corresponding to a time of this acquisition, of the counter of the client device to be read, wherein - the actual value of the propagation time pattern is determined on the basis of the client counter state, which serves as the further counter state. - one of the devices (12, 12b, 13, 14, 15, 29) is a master device (12, 12b) that has a counter (20, 27) and a trigger apparatus, by which a prescribed signal feature of a signal transmitted via the network (10, 25) is acquired, and - upon the acquisition of the signal feature, a master counter state, corresponding to a time of the acquisition, of the counter (20, 27) of the master device (12, 12b) is read, wherein - an evaluation apparatus determines, under predetermined anomaly-free conditions, a setpoint value of at least one network-specific parameter defined by a physical property of the network, and - a respective actual value of the at least one network-specific parameter (Pat) is determined by the evaluation apparatus from a difference between the read master counter state and a further counter state, and - an anomaly is indicated if a predetermined deviation criterion between the actual value and the setpoint value is met, - a reference message or a corresponding reference signal is sent to the master device, which reference message contains a reference client counter state as information, - a reference master counter state from the master counter (20, 27) is used, - a master clock generator and a client clock generator are used, - a propagation time pattern of the signal in the network constitutes the at least one network-specific parameter and it is provided, for determining its actual value, for - one of the devices (12, 13, 14, 15, 29) of the network to be a client device that likewise has a counter and a trigger apparatus, - the signal to be transmitted via the network both to the master device and to the client device, and - the prescribed signal feature to be acquired by the trigger apparatus of the client device and a client counter state, corresponding to a time of this acquisition, of the counter of the client device to be read, wherein - the actual value of the propagation time pattern is determined on the basis of the client counter state, which serves as the further counter state.