LDP extension for forwarding path congestion notification
US8693339B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2009 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Sep 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/32
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system includes an ingress node, an egress node, and one or more intermediate nodes. A path is formed from the ingress node to the egress node via the one or more intermediate nodes, where the path carries label distribution protocol (LDP) packets of an LDP traffic flow. One of the intermediate nodes detects traffic congestion, modifies one of the LDP packets to include an indicator of the traffic congestion, and sends the modified LDP packet towards the egress node. The egress node receives the modified LDP packet and notifies the ingress node of the traffic congestion in response to identifying the indicator of the traffic congestion within the modified LDP packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.