METHOD FOR OPERATING A COMMUNICATION NETWORK, AND NETWORK ARRANGEMENT

摘要

The invention relates to a method for operating a communication network (101), in particular an ethernet network. Each network device (1) coupled to the network has a first control device (2), a first switch device (4) which is assigned to the first control device (2), a second control device (3), and a second switch device (5) which is assigned to the second control device (3). Each switch device (4, 5) has a transmitting and receiving port (9, 10, 13, 14) for transmitting and receiving data via the communication network (6), a first internal transmitting and receiving port (15, 16, 17, 18) for transmitting and receiving data between the switch devices (4, 5), and a second internal transmitting and receiving port (7, 8, 11, 12) for transmitting and receiving data to or from the control device (2, 3). A respective data exchange at the first and second internal transmitting and receiving port (7, 8, 11, 12, 15, 16, 17, 18) is prioritized over a data exchange at the transmitting and receiving port (9, 10, 13, 14) for transmitting and receiving data via the communication network (6). An improved protection against failure and error analysis in the event of transmission errors and hardware faults are ensured by prioritizing specific internal data communication. Thus, babbling idiot-type errors can be handled. The invention further relates to a network arrangement (101) comprising multiple corresponding network devices (100, 200, 300) which operate according to the method.