End-to-end traffic engineering label switched paths in seamless MPLS
US9178809B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2013 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jan 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An aggregation node establishes a first session using a traffic-engineering label distribution protocol. The first session has a next hop adjacent to the aggregation node and positioned within a same network as the aggregation node. The aggregation node also establishes a second session using a 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. The aggregation node sends a message destined for the remote next hop over the second session for establishing an end-to-end traffic engineered label switched path for a FEC specified in a label request message received from an access node, wherein the message includes the same the data indicating constraint information that was received by the aggregation node in the label request message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.