Abstract: A first controller in a distributed network obtains, concurrently with a second controller in the distributed network, a system requirement and a message from a logical bus. The first controller and the second controller are communicatively coupled to the logical bus, and the first controller is communicatively coupled to a first portion of the network components and the second controller is communicatively coupled to a second portion. A processor associated with the first controller solves, concurrently with the second controller, the system requirement and the solving includes applying a solver to generate new configurations of the network components. The new configurations generated by the first controller are identical to the new configurations generated by the second controller. The first controller extracts configurations relevant to the first portion of the network components and applies the configurations to the first portion of the network components.

Abstract: A first controller in a distributed network obtains, concurrently with a second controller in the distributed network, a system requirement and a message from a logical bus. The first controller and the second controller are communicatively coupled to the logical bus, and the first controller is communicatively coupled to a first portion of the network components and the second controller is communicatively coupled to a second portion. A processor associated with the first controller solves, concurrently with the second controller, the system requirement and the solving includes applying a solver to generate new configurations of the network components. The new configurations generated by the first controller are identical to the new configurations generated by the second controller. The first controller extracts configurations relevant to the first portion of the network components and applies the configurations to the first portion of the network components.

Abstract: The present invention relates to on-line admission-control decisions. Specifically, the invention concerns general delay bounds for both deterministic and statistical cases for Differentiated Services (DiffServ) networks. More specifically, a detailed method of calculation in each case is followed by simpler methods of calculation that are more appropriate for on-line admission-control decisions. Relatively involved occupancy bound calculations for various service classes take place only at the time of network configuration or reconfiguration. At the time of admission control only simple occupancy threshold compliance calculations need to be performed. Concrete illustrations are provided for deriving bounds for the EF and AF classes provided by DiffServ. These results are applicable to both layer-3 networks that support DiffServ and layer-2 networks that support the more restricted class of service functions.