Patent ID: 9036642
Filing Date: 2015-05-19
Classification: H04L

Abstract:
1. An apparatus comprising: a processor configured to: signal to a downstream node that an upstream node is capable of receiving node protection backup route data; receive the node protection backup route data at the upstream node, wherein receiving the node protection backup route data occurs in response to the signal; and determine at least one backup route to at least one merge point node of a protected link or node according to the node protection backup route data, wherein the processor is further configured to transmit data along the backup route using forwarding information contained in the node protection backup route data following failure of the protected link or node, and cease transmitting data along the at least one backup route using the forwarding information following a trigger event, and wherein the trigger event is selected from one of expiration of label reserve timer and receipt of a make before break (MBB) route completion status message.