Patent ID: 7843808
Filing Date: 2010-11-30
Classification: H04L,H04Q

Abstract:
1. A method, comprising: receiving, at a node in a network of interconnected elements including nodes and links, signaling that requests a reservation of bandwidth associated with an initial route through the network between a source device and a destination device, where the initial route has been refined according to administrative constraints, where routes exceeding bandwidth allocation and hop limits have been rejected; receiving, at the node, topology information associated with the network and the initial route; determining, at the node, an alternative route between the node and the destination device based on the received topology information; storing the alternative route locally at the node; forwarding packets received at the node via the initial route; detecting, locally at the node, a failed element in the initial route; retrieving the locally stored alternative route; and forwarding packets to the destination device from the node using the retrieved alternative route.