Abstract: Traffic engineering vector operations that are capable of being independently solved can provide near-linear scalability through the exploitation of massively parallel processing. Optimization can be performed simultaneously on different paths in a data plane, as well as on different links within the same path (or within the same set of paths). In some embodiments, the traffic engineering vector operations include an adjustable alpha-fairness variable that allows managers to achieve different levels of fairness/throughput. Hence, embodiment alpha fairness techniques provide flexible policy execution, while maintaining excellent scalability for large network implementations.

Abstract: Traffic engineering vector operations that are capable of being independently solved can provide near-linear scalability through the exploitation of massively parallel processing. Optimization can be performed simultaneously on different paths in a data plane, as well as on different links within the same path (or within the same set of paths). In some embodiments, the traffic engineering vector operations include an adjustable alpha-fairness variable that allows managers to achieve different levels of fairness/throughput. Hence, embodiment alpha fairness techniques provide flexible policy execution, while maintaining excellent scalability for large network implementations.

Abstract: A communication network (1) comprises a number of network nodes (2, 3, 4 and 5) linked together by transmission paths (6, 7 and 8). A network manager (9) controls acceptance of calls onto transmission paths by classifying an incoming call and selecting from the database (14) an appropriate mean to peak bit rate distribution. This selected distribution is then used with the monitored transmission path load to determine a posterior distribution which reflects the load. The decision to accept or reject the call is made on the basis of the posterior distribution by a call acceptance algorithm considering the effective bandwidth for example.

Abstract: A method and apparatus for routing traffic in a circuit switched network. A call between two nodes interconnected by a direct link is first offered to the direct route, and if that is blocked it is offered to a currently nominated two-link alternative route between the two nodes. If that route is busy, the call is lost, and a randomly chosen two-link route is assigned to be the new current nominated alternative route. The strategy is particularly effective because it is simple, available routes are quickly located and once one available route is found, that same route is used for rerouting further calls until it is full. Trunk reservation protection is applied on alternative routes.