Patent ID: 9013984
Filing Date: 2015-04-21
Classification: H04J,H04L

Abstract:
1. In a network, a method of determining a restoration path for data conveyed on a plurality of network links, comprising: receiving, by a controller of a node, a service weight and a restoration weight for each network link of the plurality of network links via a link-state advertisement, wherein the service weight and the restoration weight for each network link are two different weights that are assigned to each network link, wherein the service weight defines a first value for representing a priority of a respective network link of the plurality of network links for determining a service path, wherein the restoration weight defines a second value for representing a priority of a respective network link of the plurality of network links for determining the restoration path; determining, by the controller of the node, the service path using the service weight of each network link; determining, by the controller of the node, the restoration path using the restoration weight of each network link; and transmitting, by the controller of the node, the data in the network on the restoration path when the service path has a failure.