Patent ID: 9178809
Filing Date: 2015-11-03
Classification: H04L

Abstract:
1. A method comprising: receiving, by an aggregation node, a label request message generated by an access node, wherein the label request message specifies a forwarding equivalence class (FEC) for traffic to be sent by the access node, and data that indicates constraint information for the traffic to be sent by the access node; by the aggregation node, establishing a first session for a traffic-engineering label distribution protocol with a next hop adjacent to the aggregation node and positioned within a same network as the aggregation node; by the aggregation node, establishing a second session for the same traffic-engineering label distribution protocol, wherein the second session has a remote next hop positioned at a border between the network and a second network; and sending a message destined for the remote next hop over the second session for establishing an end-to-end traffic engineered label switched path for the FEC specified in the label request message, wherein the message includes the data indicating the constraint information, which was received by the aggregation node in the label request message from the access node.