International Business Machines Corporation

Stephen Sauer

Lionel Denecheau

Ludovic Hazard

Frederic J Bauchot

Robert K Floyd, Iii

James W Ling

Hsiu Lan Chen

Liviu Tudorache

A method and system for managing traffic in a network. For each label switch path of at least two logical switch paths, logical paths are identified. Each label switch path begins at a first provider edge and ends at a second provider edge. Most recent data received from the first provider edge is transmitted to the second provider edge via a selected logical path. For each logical path, jitter, packet delay and packet loss are identified. For each logical path, calculating a path usage is calculated as a first function of the jitter, the packet delay, and the packet loss, wherein the path usage is a fraction denoting a highest percentage of total network traffic that each logical path can manage.

Load balancing traffic in a MPLS network

A method, computer program product, and system for adjusting network traffic balance among a plurality of communication links between a first network node and a second network node on a computing network includes a processor receiving over a computing network from a network device, performance metrics for a plurality of communications links between a first network node and a second network node on the computing network and based on receiving the performance metrics, the processor determines degradation in network performance on at least one of the plurality of communication links. The processor determines a weight for each communication link, associating a lower weight with the degraded link(s), and formulates instructions for an adjusted network traffic balance among the links, based on the weights. The processor transmits the instructions to a network device on the computing network and upon receipt of the instructions, the network device adjusts the network traffic balance among the links in accordance with the instructions.

Weighted distribution across paths of degraded quality

A method and system for managing traffic in a network. For each label switch path of at least two logical switch paths, logical paths are identified. Each label switch path begins at a first provider edge and ends at a second provider edge. Most recent data received from the first provider edge is transmitted to the second provider edge via a selected logical path.

A method and system for managing traffic in a network. Label switch paths are identified. Each label switch path begins at a first provider edge and ends at a second provider edge. For each label switch path, logical paths are identified. Most recent data received from the first provider edge is transmitted to the second provider edge via a selected logical path.

A method and computer system for dynamic error dampening in a node of a network system. Data traffic of the node is implemented in accordance with an Open Systems Interconnection (OSI) network management model that includes a Layer 1 physical link, a Layer 2 link including a data link in which primitive point-to-point data communication with neighboring nodes is enabled upon the Layer 1 physical link, and a Layer 3 link which is a network link operating on top of the Layer 2 link. Implementation of an error dampening process at the node includes deactivating the Layer 3 link of the node while monitoring data traffic over the Layer 2 link of the node. Deactivating the Layer 3 link of the node includes preventing the Layer 3 Link of the node from receiving incoming data traffic for routing to other nodes in the network system.

Dynamic error dampening in a network system

A system and associated method for dynamic error dampening in a node in a network system. The node collects statistics of data traffic transferred through the node. The node has a link error MIB storing Error ratio and Reliability of interface of the node. When the Error ratio is too high, the node starts running a Layer 2 protocol for monitoring data traffic and calculates Penalty of the node. When Penalty is higher than predefined Suppress Threshold, the node deactivates Layer 3 link while the Layer 2 protocol still monitors the interface. Once the Penalty becomes lower than Reuse Threshold, the node reactivates the Layer 3 link that had been previously deactivated. When Penalty becomes zero (0), the node clears the Error ratio and stops the Layer 2 protocol for monitoring the data traffic.

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La Defense, France

Stephen Sauer