Patent ID: 7269157

Claim:
A system for maintaining a traffic service level of a traffic flow in which the traffic flows to and flows from a computer network having a source, the computer network coupled to at least one of a plurality of networks, each of the networks includes a plurality of paths for transporting the traffic to a destination, where at least two of the networks are electrically coupled at an interconnection point and where the traffic flows through the interconnection point, the system comprising: a passive flow analyzer configured to receive the traffic flow; a calibrator configured to actively probe one or more alternative paths to the destination to determine a subset of alternative paths; a traffic flow repository coupled between the passive flow analyzer and the calibrator to store information regarding the alternative paths and the traffic flow; a controller coupled between the passive flow analyzer and the calibrator; an optimizer coupled to the traffic flow repository to determine optimized ingress paths; a modulator coupled between the optimizer and the controller to generate a modified routing table; and a router to route the traffic flow according to the modified routing table, wherein the modified routing table includes a changed source address where the changed source address is associated with an optimized ingress path from the destination and an alternate path to the destination.