Cariden Technologies, Inc.

Cisco Technology, Inc.

Arash Afrakhteh

Alan Gous

Andre Hentz

Arman Maghbouleh

John William Evans

In an example, there is disclosed a computing apparatus, having: one or more logic elements, including at least a processor and a memory, providing a network simulation engine to: periodically perform a network traffic simulation; cache at least one network traffic simulation in a traffic state cache; receive a quest for additional network demand; and compute a network delta based at least in part on a difference between the request for additional network demand and the traffic state cache.

Two-stage network simulation

A method to reconfigure a connection-oriented network from an existing configuration to a desired configuration includes generating a sequence of configuration specifications for the connection-oriented network. The sequence specifies a plurality of intermediate configurations between the existing and the desired configurations. The sequence of configuration specifications is implemented within the connection-oriented network by, for each configuration specification, issuing at least one instruction to an element of the connection-oriented network to modify configuration information maintained at the element to thereby instantiate respective configurations. The implementing includes issuing a specific instruction to instantiate a subsequent configuration specification only if an acknowledgment is received that a preceding configuration has been successfully instantiated.

Methods and systems to generate and implement a changeover sequence to reconfigure a connection-oriented network

A method of communicating predicted network behavior includes generating network topology structure data describing at least part of a topology of a first network. Demand structure data is generated, the demand structure data describing at least some traffic demands relating to a source in the first network and a destination in a second network, wherein there are a plurality of network links between the first network and the second network. Traffic routing change data, describing at least one change scenario which would require a change of traffic routing, is generated. This data is then used to calculate change data that describes a routing of traffic through each of the plurality of network links between the first network and the second network for the at least one change scenario. The change data is transmitted to the second network.

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Palo Alto, CA, United States of America

Arash Afrakhteh