Locally protecting service in a label switched path network
US10257079B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2017 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jan 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network node that provides egress fault protection for a primary egress node. The network node may receive a service label associated with an application from a primary egress node of a primary label switched path (LSP). The network node may use the service label to add a forwarding entry into a forwarding table associated with the primary egress node. Following a fault in the primary egress node, the network node may receive a data packet comprising an LSP label and the service label from a partial backup LSP. The network node may use the LSP label to locate the forwarding table associated with the primary egress node. The service label may be used to deliver the data packet to a destination node according to the forwarding table associated with the primary egress node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.