Patent ID: 9647494
Date: 2017-05-09
CPC Classifications: H02J,H04L,H04W,Y02D,Y02E

Claim:
1. A method, comprising: detecting, by a device in a network, a power outage event in the network; advertising, by the device, a power-protected backbone to an unprotected node as having a path cost of approximately zero to cause the unprotected node in the network to use a first routing topology that includes the power-protected backbone, in response to detecting the power outage event, wherein the power-protected backbone includes one or more nodes that are protected against the power outage event and the unprotected node is not protected against the power outage event; routing, by the device, data for the unprotected node using the first routing topology; and causing, by the device, the unprotected node to use a second routing topology that optimizes a path from the unprotected node to a root node of the network based on one or more performance criteria.