Network Node, Computer Program, Computer-Readable Medium and Method for Fail-Safe Data Transmission

A method for fail-safe data transmission in a network having a plurality of network nodes (B1-B9), the method comprising:

• transmitting data packets from a transmitter to a receiver via at least two redundant paths, upon which resources for the transmission are reserved at involved network nodes utilizing an identifier comprising a VID assigned to the respective path;
• retaining previous reservations on all redundant paths, determining a new redundant path for at least one affected path comprising at least one of (i) a change caused by a conversion and (ii) an expansion of the network and attempting to reserve resources for the transmission on this path at the involved network nodes if a new path is to be found for the at least one affected path comprising at least one of (i) the change caused by the conversion and (ii) the expansion of the network, a new identifier assigned to the new path and differing from the previous identifiers being utilized;
• and
• removing the previous reservations on the at least one affected previous path and terminating the transmission of data packets via the at least one affected previous path if the new reservations on the at least one new path are successful.

A network node comprising:

• a processor;
• and
• memory;
• wherein the network node is configured to:
• transmit data packets are transmitted from a transmitter to a receiver via at least two redundant paths, upon which resources for the transmission are reserved at involved network nodes utilizing an identifier comprising a VID assigned to the respective path;
• retain previous reservations on all redundant paths, determining a new redundant path for at least one affected path comprising at least one of (i) a change caused by a conversion and (ii) an expansion of the network and attempting to reserve resources for the transmission on this path at the involved network nodes if a new path is to be found for the at least one affected path comprising at least one of (i) the change caused by the conversion and (ii) the expansion of the network, a new identifier assigned to the new path and differing from the previous identifiers being utilized;
• and
• remove the previous reservations on the at least one affected previous path and terminate the transmission of data packets via the at least one affected previous path if the new reservations on the at least one new path are successful.

A non-transitory computer-readable medium encoded with program instructions which, when executed by a processor on at least one computer, cause the at least one computer to implement fail-safe data transmission in a network having a plurality of network nodes, the program instructions comprising:

• program code for transmitting data packets from a transmitter to a receiver via at least two redundant paths, upon which resources for the transmission are reserved at involved network nodes utilizing an identifier comprising a VID assigned to the respective path;
• program code for retaining previous reservations on all redundant paths, determining a new redundant path for at least one affected path comprising at least one of (i) a change caused by a conversion and (ii) an expansion of the network and attempting to reserve resources for the transmission on this path at the involved network nodes if a new path is to be found for the at least one affected path comprising at least one of (i) the change caused by the conversion and (ii) the expansion of the network, a new identifier assigned to the new path and differing from the previous identifiers being utilized;
• and
• program code for removing the previous reservations on the at least one affected previous path and terminating the transmission of data packets via the at least one affected previous path if the new reservations on the at least one new path are successful.