The present invention builds on the implications of variability in flow durations on the stability of load-sensitive routing. In accordance with an embodiment of the present invention, long-lived flows of packets are routed dynamically while short-lived flows are forwarded on pre-provisioned static paths....http://www.google.de/patents/US6801502?utm_source=gb-gplus-sharePatent US6801502 - Method and apparatus for load-sensitive routing of long-lived packet flows