Abstract: A method comprising, in a cloud computing system: receiving a new job at the cloud computing system; sampling VMs (Virtual Machines) of the cloud computing system for the load currently handled by each of the VMs; if the load currently handled by the VMs is within operational bounds, sending the new job to one of the VMs which currently handles the highest load compared to other ones of the VMs; and if the load currently handled by the VMs is beyond operational bounds, sending the new job to one of the VMs which currently handles the lowest load compared to other ones of the VMs.

Abstract: A method comprising, in a cloud computing system: receiving a new job at the cloud computing system; sampling VMs (Virtual Machines) of the cloud computing system for the load currently handled by each of the VMs; if the load currently handled by the VMs is within operational bounds, sending the new job to one of the VMs which currently handles the highest load compared to other ones of the VMs; and if the load currently handled by the VMs is beyond operational bounds, sending the new job to one of the VMs which currently handles the lowest load compared to other ones of the VMs.

Abstract: A method for protecting a communication network against failure, comprising the steps of: a) obtaining a primary network, represented by a graph of nodes and links, wherein each link has an associated capacity; b) computing a backup network, that includes nodes of the primary network and links that are not in the primary network; c) when a link of the primary network fails, rerouting communication traffic, through one or more links of the backup network, in order to bypass the failed link. Methods are suggested to determine the backup network, one method relates to expressing the objective and constraints on the backup network as linear or integer expressions, and a linear or integer programming tool is used to solve the equation system and provide optimal backup network.

Abstract: Systems and methods for provisioning QoS paths with restoration in a network. In one embodiment, one system includes: (1) a primary path generator configured to identify a suitable primary path between source and destination nodes in a network, (2) an auxiliary graph generator, associated with the primary path generator, configured to construct a directed auxiliary graph from an undirected graph representing the network by reversing each link in a primary QoS path of the undirected graph and replacing each other link in the undirected graph by two directed links, (3) a walk identifier, associated with the auxiliary graph generator, configured to identify a walk in the auxiliary directed graph corresponding to a set of bridges in the network and (4) a bridge identifier, associated with the walk identifier, configured to identify a set of bridges in the network such that at least one link of the primary path is protected by a bridge.

Abstract: A method for protecting a communication network against failure, comprising the steps of: a) obtaining a primary network, represented by a graph of nodes and links, wherein each link has an associated capacity; b) computing a backup network, that includes nodes of the primary network and links that are not in the primary network; c) when a link of the primary network fails, rerouting communication traffic, through one or more links of the backup network, in order to bypass the failed link. Methods are suggested to determine the backup network, one method relates to expressing the objective and constraints on the backup network as linear or integer expressions, and a linear or integer programming tool is used to solve the equation system and provide optimal backup network. Another method relates to an algorithm that traverses the links of the primary network, and adds a link having an equal capacity to the backup network as long as no cycle is created.

Abstract: Systems and methods for provisioning QoS paths with restoration in a network. In one embodiment, one system includes: (1) a primary path generator configured to identify a suitable primary path between source and destination nodes in a network, (2) an auxiliary graph generator, associated with the primary path generator, configured to construct a directed auxiliary graph from an undirected graph representing the network by reversing each link in a primary QoS path of the undirected graph and replacing each other link in the undirected graph by two directed links, (3) a walk identifier, associated with the auxiliary graph generator, configured to identify a walk in the auxiliary directed graph corresponding to a set of bridges in the network and (4) a bridge identifier, associated with the walk identifier, configured to identify a set of bridges in the network such that at least one link of the primary path is protected by a bridge.