Method and arrangement for routing data packets in a packet-switching data network
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Accused Products
Abstract
The invention relates to the routing of data packets comprising a target address in a packet switching data network. According to the invention, a first and second transmission path are assigned respective traffic distribution weightings in a routing table for individual target addresses that is assigned to a network node, said weightings indicating the respective allocated traffic load per transmission path. The maximum traffic distribution weighting is assigned to the respective first transmission path and the minimum traffic distribution weighting is assigned to the second transmission path. During undisturbed operation, data packets are routed via the first transmission path and if said path is interrupted, the packets are routed via the second transmission path.
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Citations
38 Claims
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1-18. -18. (canceled)
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19. A method for routing data packets having a destination address in a packet-switching data network, wherein a first and a second transmission path is assigned to the destination address, the first and second transmission paths included in a routing table of a network node of the data network, wherein the first and second transmission paths have traffic distribution weightings indicating a traffic load allocated to each transmission path, the method comprising:
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assigning a maximum traffic distribution weighting to the first transmission path; and
assigning a minimum traffic distribution weighting to the second transmission path, wherein data packets are routed via the first transmission path during undisturbed operation and the data packets are routed via the second transmission path if the first transmission path is interrupted. - View Dependent Claims (20, 21, 22)
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23. A method for routing data packets having a destination address in a packet-switching data network, wherein a first, a second, and a third transmission path is assigned to the destination address, the first, second, and third transmission paths included in a routing table of a network node of the data network, wherein the first, second, and third transmission paths have traffic distribution weightings indicating a traffic load allocated to each transmission path, the method comprising:
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assigning a maximum traffic distribution weighting to the first transmission path; and
assigning a minimum traffic distribution weighting to the second and to the third transmission path, wherein data packets are routed via the first transmission path during undisturbed operation and the data packets are routed via the second or third transmission path if the first transmission path is interrupted. - View Dependent Claims (24, 25, 26)
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- 27. A method for routing data packets having a destination address in a packet-switching data network, wherein a first, a second, and a third transmission path is assigned to the destination address, the first, second, and third transmission paths included in a routing table of a network node of the data network, wherein the first, second, and third transmission paths have traffic distribution weightings indicating a traffic load allocated to each transmission path, the method comprising assigning a minimum traffic distribution weighting to the third transmission path, wherein the third transmission path is used for the transmission of data packets only in the event of failure of at least a part of both the first and second transmission paths.
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38. A network node for a packet-switching data network, comprising:
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a routing table for entering destination addresses to which transmission paths and traffic distribution weightings are assigned, wherein at least two paths are provided per destination address, and wherein the routing table is structured in a manner such that the minimum traffic distribution weighting is assigned to at least one transmission path for a destination address and at least one other transmission path has a traffic distribution weighting that deviates from the minimum traffic distribution weighting and in that the router can be controlled such that in the event of interruption of at least one part of the paths with a traffic distribution weighting that deviates from the minimum traffic distribution weighting, the transmission of at least one part of the packets is effected via the path with the minimum traffic distribution weighting.
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Specification